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Removing the tagging pluggable so it can be replaced.

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commit 73e74d3ab4b9dd8770a90f9cd255fc38420da0e8 1 parent dcf4933
@bryanveloso bryanveloso authored
View
30 applications/tagging/__init__.py
@@ -1,30 +0,0 @@
-from django.utils.translation import ugettext as _
-
-from tagging.managers import ModelTaggedItemManager, TagDescriptor
-
-VERSION = (0, 3, 'pre')
-
-class AlreadyRegistered(Exception):
- """
- An attempt was made to register a model more than once.
- """
- pass
-
-registry = []
-
-def register(model, tag_descriptor_attr='tags',
- tagged_item_manager_attr='tagged'):
- """
- Sets the given model class up for working with tags.
- """
- if model in registry:
- raise AlreadyRegistered(
- _('The model %s has already been registered.') % model.__name__)
- registry.append(model)
-
- # Add tag descriptor
- setattr(model, tag_descriptor_attr, TagDescriptor())
-
- # Add custom manager
- ModelTaggedItemManager().contribute_to_class(model,
- tagged_item_manager_attr)
View
7 applications/tagging/admin.py
@@ -1,7 +0,0 @@
-from django.contrib import admin
-
-from tagging.models import Tag, TaggedItem
-
-
-admin.site.register(Tag)
-admin.site.register(TaggedItem)
View
110 applications/tagging/fields.py
@@ -1,110 +0,0 @@
-"""
-A custom Model Field for tagging.
-"""
-from django.db.models import signals
-from django.db.models.fields import CharField
-from django.dispatch import dispatcher
-from django.utils.translation import ugettext_lazy as _
-
-from tagging import settings
-from tagging.models import Tag
-from tagging.utils import edit_string_for_tags
-from tagging.validators import isTagList
-
-class TagField(CharField):
- """
- A "special" character field that actually works as a relationship to tags
- "under the hood". This exposes a space-separated string of tags, but does
- the splitting/reordering/etc. under the hood.
- """
- def __init__(self, **kwargs):
- kwargs['max_length'] = kwargs.get('max_length', 255)
- kwargs['blank'] = kwargs.get('blank', True)
- kwargs['validator_list'] = [isTagList] + kwargs.get('validator_list', [])
- super(TagField, self).__init__(**kwargs)
-
- def contribute_to_class(self, cls, name):
- super(TagField, self).contribute_to_class(cls, name)
-
- # Make this object the descriptor for field access.
- setattr(cls, self.name, self)
-
- # Save tags back to the database post-save
- dispatcher.connect(self._save, signal=signals.post_save, sender=cls)
-
- def __get__(self, instance, owner=None):
- """
- Tag getter. Returns an instance's tags if accessed on an instance, and
- all of a model's tags if called on a class. That is, this model::
-
- class Link(models.Model):
- ...
- tags = TagField()
-
- Lets you do both of these::
-
- >>> l = Link.objects.get(...)
- >>> l.tags
- 'tag1 tag2 tag3'
-
- >>> Link.tags
- 'tag1 tag2 tag3 tag4'
-
- """
- # Handle access on the model (i.e. Link.tags)
- if instance is None:
- return edit_string_for_tags(Tag.objects.usage_for_model(owner))
-
- tags = self._get_instance_tag_cache(instance)
- if tags is None:
- if instance.pk is None:
- self._set_instance_tag_cache(instance, '')
- else:
- self._set_instance_tag_cache(
- instance, edit_string_for_tags(Tag.objects.get_for_object(instance)))
- return self._get_instance_tag_cache(instance)
-
- def __set__(self, instance, value):
- """
- Set an object's tags.
- """
- if instance is None:
- raise AttributeError(_('%s can only be set on instances.') % self.name)
- if settings.FORCE_LOWERCASE_TAGS and value is not None:
- value = value.lower()
- self._set_instance_tag_cache(instance, value)
-
- def _save(self, signal, sender, instance):
- """
- Save tags back to the database
- """
- tags = self._get_instance_tag_cache(instance)
- if tags is not None:
- Tag.objects.update_tags(instance, tags)
-
- def __delete__(self, instance):
- """
- Clear all of an object's tags.
- """
- self._set_instance_tag_cache(instance, '')
-
- def _get_instance_tag_cache(self, instance):
- """
- Helper: get an instance's tag cache.
- """
- return getattr(instance, '_%s_cache' % self.attname, None)
-
- def _set_instance_tag_cache(self, instance, tags):
- """
- Helper: set an instance's tag cache.
- """
- setattr(instance, '_%s_cache' % self.attname, tags)
-
- def get_internal_type(self):
- return 'CharField'
-
- def formfield(self, **kwargs):
- from tagging import forms
- defaults = {'form_class': forms.TagField}
- defaults.update(kwargs)
- return super(TagField, self).formfield(**defaults)
View
23 applications/tagging/forms.py
@@ -1,23 +0,0 @@
-"""
-Tagging components for Django's ``newforms`` form library.
-"""
-from django import newforms as forms
-from django.utils.translation import ugettext as _
-
-from tagging import settings
-from tagging.utils import parse_tag_input
-
-class TagField(forms.CharField):
- """
- A ``CharField`` which validates that its input is a valid list of
- tag names.
- """
- def clean(self, value):
- value = super(TagField, self).clean(value)
- if value == u'':
- return value
- for tag_name in parse_tag_input(value):
- if len(tag_name) > settings.MAX_TAG_LENGTH:
- raise forms.ValidationError(
- _('Each tag may be no more than %s characters long.') % settings.MAX_TAG_LENGTH)
- return value
View
35 applications/tagging/generic.py
@@ -1,35 +0,0 @@
-from django.contrib.contenttypes.models import ContentType
-
-def fetch_content_objects(tagged_items, select_related_for=None):
- """
- Retrieves ``ContentType``s and content objects for the given list of
- ``TaggedItems``, grouping the retrieval of content objects by model
- to reduce the number of queries executed.
-
- This results in ``number_of_content_types + 1`` queries rather than
- the ``number_of_tagged_items * 2`` queries you'd get by iterating
- over the list and accessing each item's ``object`` attribute.
- """
- if select_related_for is None: select_related_for = []
-
- # Group content object pks by their content type pks
- objects = {}
- for item in tagged_items:
- objects.setdefault(item.content_type_id, []).append(item.object_id)
-
- # Retrieve content types and content objects in bulk
- content_types = ContentType._default_manager.in_bulk(objects.keys())
- for content_type_pk, object_pks in objects.items():
- model = content_types[content_type_pk].model_class()
- if not select_related_for:
- objects[content_type_pk] = model._default_manager.in_bulk(object_pks)
- elif content_types[content_type_pk].model in select_related_for:
- objects[content_type_pk] = model._default_manager.select_related().in_bulk(object_pks)
-
- # Set content types and content objects in the appropriate cache
- # attributes, so accessing the 'content_type' and 'object'
- # attributes on each tagged item won't result in further database
- # hits.
- for item in tagged_items:
- item._object_cache = objects[item.content_type_id][item.object_id]
- item._content_type_cache = content_types[item.content_type_id]
View
68 applications/tagging/managers.py
@@ -1,68 +0,0 @@
-"""
-Custom managers for Django models registered with the tagging
-application.
-"""
-from django.contrib.contenttypes.models import ContentType
-from django.db import models
-
-from tagging.models import Tag, TaggedItem
-
-class ModelTagManager(models.Manager):
- """
- A manager for retrieving tags for a particular model.
- """
- def get_query_set(self):
- ctype = ContentType.objects.get_for_model(self.model)
- return Tag.objects.filter(
- items__content_type__pk=ctype.pk).distinct()
-
- def cloud(self, *args, **kwargs):
- return Tag.objects.cloud_for_model(self.model, *args, **kwargs)
-
- def related(self, tags, *args, **kwargs):
- return Tag.objects.related_for_model(tags, self.model, *args, **kwargs)
-
- def usage(self, *args, **kwargs):
- return Tag.objects.usage_for_model(self.model, *arg, **kwargs)
-
-class ModelTaggedItemManager(models.Manager):
- """
- A manager for retrieving model instances based on their tags.
- """
- def related_to(self, obj, queryset=None, num=None):
- if queryset is None:
- return TaggedItem.objects.get_related(obj, self.model, num=num)
- else:
- return TaggedItem.objects.get_related(obj, queryset, num=num)
-
- def with_all(self, tags, queryset=None):
- if queryset is None:
- return TaggedItem.objects.get_by_model(self.model, tags)
- else:
- return TaggedItem.objects.get_by_model(queryset, tags)
-
- def with_any(self, tags, queryset=None):
- if queryset is None:
- return TaggedItem.objects.get_union_by_model(self.model, tags)
- else:
- return TaggedItem.objects.get_union_by_model(queryset, tags)
-
-class TagDescriptor(object):
- """
- A descriptor which provides access to a ``ModelTagManager`` for
- model classes and simple retrieval, updating and deletion of tags
- for model instances.
- """
- def __get__(self, instance, owner):
- if not instance:
- tag_manager = ModelTagManager()
- tag_manager.model = owner
- return tag_manager
- else:
- return Tag.objects.get_for_object(instance)
-
- def __set__(self, instance, value):
- Tag.objects.update_tags(instance, value)
-
- def __del__(self, instance):
- Tag.objects.update_tags(instance, None)
View
451 applications/tagging/models.py
@@ -1,451 +0,0 @@
-"""
-Models and managers for generic tagging.
-"""
-# Python 2.3 compatibility
-if not hasattr(__builtins__, 'set'):
- from sets import Set as set
-
-from django.contrib.contenttypes import generic
-from django.contrib.contenttypes.models import ContentType
-from django.db import connection, models
-from django.db.models.query import QuerySet, parse_lookup
-from django.utils.translation import ugettext_lazy as _
-
-from tagging import settings
-from tagging.utils import calculate_cloud, get_tag_list, get_queryset_and_model, parse_tag_input
-from tagging.utils import LOGARITHMIC
-from tagging.validators import isTag
-
-qn = connection.ops.quote_name
-
-############
-# Managers #
-############
-
-class TagManager(models.Manager):
- def update_tags(self, obj, tag_names):
- """
- Update tags associated with an object.
- """
- ctype = ContentType.objects.get_for_model(obj)
- current_tags = list(self.filter(items__content_type__pk=ctype.pk,
- items__object_id=obj.pk))
- updated_tag_names = parse_tag_input(tag_names)
- if settings.FORCE_LOWERCASE_TAGS:
- updated_tag_names = [t.lower() for t in updated_tag_names]
-
- # Remove tags which no longer apply
- tags_for_removal = [tag for tag in current_tags \
- if tag.name not in updated_tag_names]
- if len(tags_for_removal):
- TaggedItem._default_manager.filter(content_type__pk=ctype.pk,
- object_id=obj.pk,
- tag__in=tags_for_removal).delete()
- # Add new tags
- current_tag_names = [tag.name for tag in current_tags]
- for tag_name in updated_tag_names:
- if tag_name not in current_tag_names:
- tag, created = self.get_or_create(name=tag_name)
- TaggedItem._default_manager.create(tag=tag, object=obj)
-
- def add_tag(self, obj, tag_name):
- """
- Associates the given object with a tag.
- """
- tag_names = parse_tag_input(tag_name)
- if not len(tag_names):
- raise AttributeError(_('No tags were given: "%s".') % tag_name)
- if len(tag_names) > 1:
- raise AttributeError(_('Multiple tags were given: "%s".') % tag_name)
- tag_name = tag_names[0]
- if settings.FORCE_LOWERCASE_TAGS:
- tag_name = tag_name.lower()
- tag, created = self.get_or_create(name=tag_name)
- ctype = ContentType.objects.get_for_model(obj)
- TaggedItem._default_manager.get_or_create(
- tag=tag, content_type=ctype, object_id=obj.pk)
-
- def get_for_object(self, obj):
- """
- Create a queryset matching all tags associated with the given
- object.
- """
- ctype = ContentType.objects.get_for_model(obj)
- return self.filter(items__content_type__pk=ctype.pk,
- items__object_id=obj.pk)
-
- def usage_for_model(self, model, counts=False, min_count=None, filters=None):
- """
- Obtain a list of tags associated with instances of the given
- Model class.
-
- If ``counts`` is True, a ``count`` attribute will be added to
- each tag, indicating how many times it has been used against
- the Model class in question.
-
- If ``min_count`` is given, only tags which have a ``count``
- greater than or equal to ``min_count`` will be returned.
- Passing a value for ``min_count`` implies ``counts=True``.
-
- To limit the tags (and counts, if specified) returned to those
- used by a subset of the Model's instances, pass a dictionary
- of field lookups to be applied to the given Model as the
- ``filters`` argument.
- """
- if filters is None: filters = {}
- if min_count is not None: counts = True
-
- model_table = qn(model._meta.db_table)
- model_pk = '%s.%s' % (model_table, qn(model._meta.pk.column))
- query = """
- SELECT DISTINCT %(tag)s.id, %(tag)s.name%(count_sql)s
- FROM
- %(tag)s
- INNER JOIN %(tagged_item)s
- ON %(tag)s.id = %(tagged_item)s.tag_id
- INNER JOIN %(model)s
- ON %(tagged_item)s.object_id = %(model_pk)s
- %%s
- WHERE %(tagged_item)s.content_type_id = %(content_type_id)s
- %%s
- GROUP BY %(tag)s.id, %(tag)s.name
- %%s
- ORDER BY %(tag)s.name ASC""" % {
- 'tag': qn(self.model._meta.db_table),
- 'count_sql': counts and (', COUNT(%s)' % model_pk) or '',
- 'tagged_item': qn(TaggedItem._meta.db_table),
- 'model': model_table,
- 'model_pk': model_pk,
- 'content_type_id': ContentType.objects.get_for_model(model).pk,
- }
-
- extra_joins = ''
- extra_criteria = ''
- min_count_sql = ''
- params = []
- if len(filters) > 0:
- joins, where, params = parse_lookup(filters.items(), model._meta)
- extra_joins = ' '.join(['%s %s AS %s ON %s' % (join_type, table, alias, condition)
- for (alias, (table, join_type, condition)) in joins.items()])
- extra_criteria = 'AND %s' % (' AND '.join(where))
- if min_count is not None:
- min_count_sql = 'HAVING COUNT(%s) >= %%s' % model_pk
- params.append(min_count)
-
- cursor = connection.cursor()
- cursor.execute(query % (extra_joins, extra_criteria, min_count_sql), params)
- tags = []
- for row in cursor.fetchall():
- t = self.model(*row[:2])
- if counts:
- t.count = row[2]
- tags.append(t)
- return tags
-
- def related_for_model(self, tags, model, counts=False, min_count=None):
- """
- Obtain a list of tags related to a given list of tags - that
- is, other tags used by items which have all the given tags.
-
- If ``counts`` is True, a ``count`` attribute will be added to
- each tag, indicating the number of items which have it in
- addition to the given list of tags.
-
- If ``min_count`` is given, only tags which have a ``count``
- greater than or equal to ``min_count`` will be returned.
- Passing a value for ``min_count`` implies ``counts=True``.
- """
- if min_count is not None: counts = True
- tags = get_tag_list(tags)
- tag_count = len(tags)
- tagged_item_table = qn(TaggedItem._meta.db_table)
- query = """
- SELECT %(tag)s.id, %(tag)s.name%(count_sql)s
- FROM %(tagged_item)s INNER JOIN %(tag)s ON %(tagged_item)s.tag_id = %(tag)s.id
- WHERE %(tagged_item)s.content_type_id = %(content_type_id)s
- AND %(tagged_item)s.object_id IN
- (
- SELECT %(tagged_item)s.object_id
- FROM %(tagged_item)s, %(tag)s
- WHERE %(tagged_item)s.content_type_id = %(content_type_id)s
- AND %(tag)s.id = %(tagged_item)s.tag_id
- AND %(tag)s.id IN (%(tag_id_placeholders)s)
- GROUP BY %(tagged_item)s.object_id
- HAVING COUNT(%(tagged_item)s.object_id) = %(tag_count)s
- )
- AND %(tag)s.id NOT IN (%(tag_id_placeholders)s)
- GROUP BY %(tag)s.id, %(tag)s.name
- %(min_count_sql)s
- ORDER BY %(tag)s.name ASC""" % {
- 'tag': qn(self.model._meta.db_table),
- 'count_sql': counts and ', COUNT(%s.object_id)' % tagged_item_table or '',
- 'tagged_item': tagged_item_table,
- 'content_type_id': ContentType.objects.get_for_model(model).pk,
- 'tag_id_placeholders': ','.join(['%s'] * tag_count),
- 'tag_count': tag_count,
- 'min_count_sql': min_count is not None and ('HAVING COUNT(%s.object_id) >= %%s' % tagged_item_table) or '',
- }
-
- params = [tag.pk for tag in tags] * 2
- if min_count is not None:
- params.append(min_count)
-
- cursor = connection.cursor()
- cursor.execute(query, params)
- related = []
- for row in cursor.fetchall():
- tag = self.model(*row[:2])
- if counts is True:
- tag.count = row[2]
- related.append(tag)
- return related
-
- def cloud_for_model(self, model, steps=4, distribution=LOGARITHMIC,
- filters=None, min_count=None):
- """
- Obtain a list of tags associated with instances of the given
- Model, giving each tag a ``count`` attribute indicating how
- many times it has been used and a ``font_size`` attribute for
- use in displaying a tag cloud.
-
- ``steps`` defines the range of font sizes - ``font_size`` will
- be an integer between 1 and ``steps`` (inclusive).
-
- ``distribution`` defines the type of font size distribution
- algorithm which will be used - logarithmic or linear. It must
- be either ``tagging.utils.LOGARITHMIC`` or
- ``tagging.utils.LINEAR``.
-
- To limit the tags displayed in the cloud to those associated
- with a subset of the Model's instances, pass a dictionary of
- field lookups to be applied to the given Model as the
- ``filters`` argument.
-
- To limit the tags displayed in the cloud to those with a
- ``count`` greater than or equal to ``min_count``, pass a value
- for the ``min_count`` argument.
- """
- tags = list(self.usage_for_model(model, counts=True, filters=filters,
- min_count=min_count))
- return calculate_cloud(tags, steps, distribution)
-
-class TaggedItemManager(models.Manager):
- """
- FIXME There's currently no way to get the ``GROUP BY`` and ``HAVING``
- SQL clauses required by many of this manager's methods into
- Django's ORM.
-
- For now, we manually execute a query to retrieve the PKs of
- objects we're interested in, then use the ORM's ``__in``
- lookup to return a ``QuerySet``.
-
- Once the queryset-refactor branch lands in trunk, this can be
- tidied up significantly.
- """
- def get_by_model(self, queryset_or_model, tags):
- """
- Create a ``QuerySet`` containing instances of the specified
- model associated with a given tag or list of tags.
- """
- tags = get_tag_list(tags)
- tag_count = len(tags)
- if tag_count == 0:
- # No existing tags were given
- queryset, model = get_queryset_and_model(queryset_or_model)
- return model._default_manager.none()
- elif tag_count == 1:
- # Optimisation for single tag - fall through to the simpler
- # query below.
- tag = tags[0]
- else:
- return self.get_intersection_by_model(queryset_or_model, tags)
-
- queryset, model = get_queryset_and_model(queryset_or_model)
- content_type = ContentType.objects.get_for_model(model)
- opts = self.model._meta
- tagged_item_table = qn(opts.db_table)
- return queryset.extra(
- tables=[opts.db_table],
- where=[
- '%s.content_type_id = %%s' % tagged_item_table,
- '%s.tag_id = %%s' % tagged_item_table,
- '%s.%s = %s.object_id' % (qn(model._meta.db_table),
- qn(model._meta.pk.column),
- tagged_item_table)
- ],
- params=[content_type.pk, tag.pk],
- )
-
- def get_intersection_by_model(self, queryset_or_model, tags):
- """
- Create a ``QuerySet`` containing instances of the specified
- model associated with *all* of the given list of tags.
- """
- tags = get_tag_list(tags)
- tag_count = len(tags)
- queryset, model = get_queryset_and_model(queryset_or_model)
- model_table = qn(model._meta.db_table)
- # This query selects the ids of all objects which have all the
- # given tags.
- query = """
- SELECT %(model_pk)s
- FROM %(model)s, %(tagged_item)s
- WHERE %(tagged_item)s.content_type_id = %(content_type_id)s
- AND %(tagged_item)s.tag_id IN (%(tag_id_placeholders)s)
- AND %(model_pk)s = %(tagged_item)s.object_id
- GROUP BY %(model_pk)s
- HAVING COUNT(%(model_pk)s) = %(tag_count)s""" % {
- 'model_pk': '%s.%s' % (model_table, qn(model._meta.pk.column)),
- 'model': model_table,
- 'tagged_item': qn(self.model._meta.db_table),
- 'content_type_id': ContentType.objects.get_for_model(model).pk,
- 'tag_id_placeholders': ','.join(['%s'] * tag_count),
- 'tag_count': tag_count,
- }
-
- cursor = connection.cursor()
- cursor.execute(query, [tag.pk for tag in tags])
- object_ids = [row[0] for row in cursor.fetchall()]
- if len(object_ids) > 0:
- return queryset.filter(pk__in=object_ids)
- else:
- return model._default_manager.none()
-
- def get_union_by_model(self, queryset_or_model, tags):
- """
- Create a ``QuerySet`` containing instances of the specified
- model associated with *any* of the given list of tags.
- """
- tags = get_tag_list(tags)
- tag_count = len(tags)
- queryset, model = get_queryset_and_model(queryset_or_model)
- model_table = qn(model._meta.db_table)
- # This query selects the ids of all objects which have any of
- # the given tags.
- query = """
- SELECT %(model_pk)s
- FROM %(model)s, %(tagged_item)s
- WHERE %(tagged_item)s.content_type_id = %(content_type_id)s
- AND %(tagged_item)s.tag_id IN (%(tag_id_placeholders)s)
- AND %(model_pk)s = %(tagged_item)s.object_id
- GROUP BY %(model_pk)s""" % {
- 'model_pk': '%s.%s' % (model_table, qn(model._meta.pk.column)),
- 'model': model_table,
- 'tagged_item': qn(self.model._meta.db_table),
- 'content_type_id': ContentType.objects.get_for_model(model).pk,
- 'tag_id_placeholders': ','.join(['%s'] * tag_count),
- }
-
- cursor = connection.cursor()
- cursor.execute(query, [tag.pk for tag in tags])
- object_ids = [row[0] for row in cursor.fetchall()]
- if len(object_ids) > 0:
- return queryset.filter(pk__in=object_ids)
- else:
- return model._default_manager.none()
-
- def get_related(self, obj, queryset_or_model, num=None):
- """
- Retrieve a list of instances of the specified model which share
- tags with the model instance ``obj``, ordered by the number of
- shared tags in descending order.
-
- If ``num`` is given, a maximum of ``num`` instances will be
- returned.
- """
- queryset, model = get_queryset_and_model(queryset_or_model)
- model_table = qn(model._meta.db_table)
- content_type = ContentType.objects.get_for_model(obj)
- related_content_type = ContentType.objects.get_for_model(model)
- query = """
- SELECT %(model_pk)s, COUNT(related_tagged_item.object_id) AS %(count)s
- FROM %(model)s, %(tagged_item)s, %(tag)s, %(tagged_item)s related_tagged_item
- WHERE %(tagged_item)s.object_id = %%s
- AND %(tagged_item)s.content_type_id = %(content_type_id)s
- AND %(tag)s.id = %(tagged_item)s.tag_id
- AND related_tagged_item.content_type_id = %(related_content_type_id)s
- AND related_tagged_item.tag_id = %(tagged_item)s.tag_id
- AND %(model_pk)s = related_tagged_item.object_id"""
- if content_type.pk == related_content_type.pk:
- # Exclude the given instance itself if determining related
- # instances for the same model.
- query += """
- AND related_tagged_item.object_id != %(tagged_item)s.object_id"""
- query += """
- GROUP BY %(model_pk)s
- ORDER BY %(count)s DESC
- %(limit_offset)s"""
- query = query % {
- 'model_pk': '%s.%s' % (model_table, qn(model._meta.pk.column)),
- 'count': qn('count'),
- 'model': model_table,
- 'tagged_item': qn(self.model._meta.db_table),
- 'tag': qn(self.model._meta.get_field('tag').rel.to._meta.db_table),
- 'content_type_id': content_type.pk,
- 'related_content_type_id': related_content_type.pk,
- 'limit_offset': num is not None and connection.ops.limit_offset_sql(num) or '',
- }
-
- cursor = connection.cursor()
- cursor.execute(query, [obj.pk])
- object_ids = [row[0] for row in cursor.fetchall()]
- if len(object_ids) > 0:
- # Use in_bulk here instead of an id__in lookup, because id__in would
- # clobber the ordering.
- object_dict = queryset.in_bulk(object_ids)
- return [object_dict[object_id] for object_id in object_ids]
- else:
- return []
-
-##########
-# Models #
-##########
-
-class Tag(models.Model):
- """
- A tag.
- """
- name = models.CharField(_('name'), max_length=50, unique=True, db_index=True, validator_list=[isTag])
-
- objects = TagManager()
-
- class Meta:
- ordering = ('name',)
- verbose_name = _('tag')
- verbose_name_plural = _('tags')
-
- class Admin:
- pass
-
- def __unicode__(self):
- return self.name
-
-class TaggedItem(models.Model):
- """
- Holds the relationship between a tag and the item being tagged.
- """
- tag = models.ForeignKey(Tag, verbose_name=_('tag'), related_name='items')
- content_type = models.ForeignKey(ContentType, verbose_name=_('content type'))
- object_id = models.PositiveIntegerField(_('object id'), db_index=True)
- object = generic.GenericForeignKey('content_type', 'object_id')
-
- objects = TaggedItemManager()
-
- class Meta:
- # Enforce unique tag association per object
- unique_together = (('tag', 'content_type', 'object_id'),)
- verbose_name = _('tagged item')
- verbose_name_plural = _('tagged items')
-
- class Admin:
- pass
-
- def __unicode__(self):
- return u'%s [%s]' % (self.object, self.tag)
-
-##################
-# Initialization #
-##################
-
-from tagging import register
-del register
View
6 applications/tagging/register.py
@@ -1,6 +0,0 @@
-# Administration
-from tagging import admin
-
-# Template Tags
-from django import template
-template.add_to_builtins('tagging.templatetags.tagging_tags')
View
13 applications/tagging/settings.py
@@ -1,13 +0,0 @@
-"""
-Convenience module for access of custom tagging application settings,
-which enforces default settings when the main settings module does not
-contain the appropriate settings.
-"""
-from django.conf import settings
-
-# The maximum length of a tag's name.
-MAX_TAG_LENGTH = getattr(settings, 'MAX_TAG_LENGTH', 50)
-
-# Whether to force all tags to lowercase before they are saved to the
-# database.
-FORCE_LOWERCASE_TAGS = getattr(settings, 'FORCE_LOWERCASE_TAGS', False)
View
0  applications/tagging/templatetags/__init__.py
No changes.
View
231 applications/tagging/templatetags/tagging_tags.py
@@ -1,231 +0,0 @@
-from django.db.models import get_model
-from django.template import Library, Node, TemplateSyntaxError, Variable, resolve_variable
-from django.utils.translation import ugettext as _
-
-from tagging.models import Tag, TaggedItem
-from tagging.utils import LINEAR, LOGARITHMIC
-
-register = Library()
-
-class TagsForModelNode(Node):
- def __init__(self, model, context_var, counts):
- self.model = model
- self.context_var = context_var
- self.counts = counts
-
- def render(self, context):
- model = get_model(*self.model.split('.'))
- if model is None:
- raise TemplateSyntaxError(_('tags_for_model tag was given an invalid model: %s') % self.model)
- context[self.context_var] = Tag.objects.usage_for_model(model, counts=self.counts)
- return ''
-
-class TagCloudForModelNode(Node):
- def __init__(self, model, context_var, **kwargs):
- self.model = model
- self.context_var = context_var
- self.kwargs = kwargs
-
- def render(self, context):
- model = get_model(*self.model.split('.'))
- if model is None:
- raise TemplateSyntaxError(_('tag_cloud_for_model tag was given an invalid model: %s') % self.model)
- context[self.context_var] = \
- Tag.objects.cloud_for_model(model, **self.kwargs)
- return ''
-
-class TagsForObjectNode(Node):
- def __init__(self, obj, context_var):
- self.obj = Variable(obj)
- self.context_var = context_var
-
- def render(self, context):
- context[self.context_var] = \
- Tag.objects.get_for_object(self.obj.resolve(context))
- return ''
-
-class TaggedObjectsNode(Node):
- def __init__(self, tag, model, context_var):
- self.tag = Variable(tag)
- self.context_var = context_var
- self.model = model
-
- def render(self, context):
- model = get_model(*self.model.split('.'))
- if model is None:
- raise TemplateSyntaxError(_('tagged_objects tag was given an invalid model: %s') % self.model)
- context[self.context_var] = \
- TaggedItem.objects.get_by_model(model, self.tag.resolve(context))
- return ''
-
-def do_tags_for_model(parser, token):
- """
- Retrieves a list of ``Tag`` objects associated with a given model
- and stores them in a context variable.
-
- Usage::
-
- {% tags_for_model [model] as [varname] %}
-
- The model is specified in ``[appname].[modelname]`` format.
-
- Extended usage::
-
- {% tags_for_model [model] as [varname] with counts %}
-
- If specified - by providing extra ``with counts`` arguments - adds
- a ``count`` attribute to each tag containing the number of
- instances of the given model which have been tagged with it.
-
- Examples::
-
- {% tags_for_model products.Widget as widget_tags %}
- {% tags_for_model products.Widget as widget_tags with counts %}
-
- """
- bits = token.contents.split()
- len_bits = len(bits)
- if len_bits not in (4, 6):
- raise TemplateSyntaxError(_('%s tag requires either three or five arguments') % bits[0])
- if bits[2] != 'as':
- raise TemplateSyntaxError(_("second argument to %s tag must be 'as'") % bits[0])
- if len_bits == 6:
- if bits[4] != 'with':
- raise TemplateSyntaxError(_("if given, fourth argument to %s tag must be 'with'") % bits[0])
- if bits[5] != 'counts':
- raise TemplateSyntaxError(_("if given, fifth argument to %s tag must be 'counts'") % bits[0])
- if len_bits == 4:
- return TagsForModelNode(bits[1], bits[3], counts=False)
- else:
- return TagsForModelNode(bits[1], bits[3], counts=True)
-
-def do_tag_cloud_for_model(parser, token):
- """
- Retrieves a list of ``Tag`` objects for a given model, with tag
- cloud attributes set, and stores them in a context variable.
-
- Usage::
-
- {% tag_cloud_for_model [model] as [varname] %}
-
- The model is specified in ``[appname].[modelname]`` format.
-
- Extended usage::
-
- {% tag_cloud_for_model [model] as [varname] with [options] %}
-
- Extra options can be provided after an optional ``with`` argument,
- with each option being specified in ``[name]=[value]`` format. Valid
- extra options are:
-
- ``steps``
- Integer. Defines the range of font sizes.
-
- ``min_count``
- Integer. Defines the minimum number of times a tag must have
- been used to appear in the cloud.
-
- ``distribution``
- One of ``linear`` or ``log``. Defines the font-size
- distribution algorithm to use when generating the tag cloud.
-
- Examples::
-
- {% tag_cloud_for_model products.Widget as widget_tags %}
- {% tag_cloud_for_model products.Widget as widget_tags with steps=9 min_count=3 distribution=log %}
-
- """
- bits = token.contents.split()
- len_bits = len(bits)
- if len_bits != 4 and len_bits not in range(6, 9):
- raise TemplateSyntaxError(_('%s tag requires either three or between five and seven arguments') % bits[0])
- if bits[2] != 'as':
- raise TemplateSyntaxError(_("second argument to %s tag must be 'as'") % bits[0])
- kwargs = {}
- if len_bits > 5:
- if bits[4] != 'with':
- raise TemplateSyntaxError(_("if given, fourth argument to %s tag must be 'with'") % bits[0])
- for i in range(5, len_bits):
- try:
- name, value = bits[i].split('=')
- if name == 'steps' or name == 'min_count':
- try:
- kwargs[str(name)] = int(value)
- except ValueError:
- raise TemplateSyntaxError(_("%(tag)s tag's '%(option)s' option was not a valid integer: '%(value)s'") % {
- 'tag': bits[0],
- 'option': name,
- 'value': value,
- })
- elif name == 'distribution':
- if value in ['linear', 'log']:
- kwargs[str(name)] = {'linear': LINEAR, 'log': LOGARITHMIC}[value]
- else:
- raise TemplateSyntaxError(_("%(tag)s tag's '%(option)s' option was not a valid choice: '%(value)s'") % {
- 'tag': bits[0],
- 'option': name,
- 'value': value,
- })
- else:
- raise TemplateSyntaxError(_("%(tag)s tag was given an invalid option: '%(option)s'") % {
- 'tag': bits[0],
- 'option': name,
- })
- except ValueError:
- raise TemplateSyntaxError(_("%(tag)s tag was given a badly formatted option: '%(option)s'") % {
- 'tag': bits[0],
- 'option': bits[i],
- })
- return TagCloudForModelNode(bits[1], bits[3], **kwargs)
-
-def do_tags_for_object(parser, token):
- """
- Retrieves a list of ``Tag`` objects associated with an object and
- stores them in a context variable.
-
- Usage::
-
- {% tags_for_object [object] as [varname] %}
-
- Example::
-
- {% tags_for_object foo_object as tag_list %}
- """
- bits = token.contents.split()
- if len(bits) != 4:
- raise TemplateSyntaxError(_('%s tag requires exactly three arguments') % bits[0])
- if bits[2] != 'as':
- raise TemplateSyntaxError(_("second argument to %s tag must be 'as'") % bits[0])
- return TagsForObjectNode(bits[1], bits[3])
-
-def do_tagged_objects(parser, token):
- """
- Retrieves a list of instances of a given model which are tagged with
- a given ``Tag`` and stores them in a context variable.
-
- Usage::
-
- {% tagged_objects [tag] in [model] as [varname] %}
-
- The model is specified in ``[appname].[modelname]`` format.
-
- The tag must be an instance of a ``Tag``, not the name of a tag.
-
- Example::
-
- {% tagged_objects comedy_tag in tv.Show as comedies %}
-
- """
- bits = token.contents.split()
- if len(bits) != 6:
- raise TemplateSyntaxError(_('%s tag requires exactly five arguments') % bits[0])
- if bits[2] != 'in':
- raise TemplateSyntaxError(_("second argument to %s tag must be 'in'") % bits[0])
- if bits[4] != 'as':
- raise TemplateSyntaxError(_("fourth argument to %s tag must be 'as'") % bits[0])
- return TaggedObjectsNode(bits[1], bits[3], bits[5])
-
-register.tag('tags_for_model', do_tags_for_model)
-register.tag('tag_cloud_for_model', do_tag_cloud_for_model)
-register.tag('tags_for_object', do_tags_for_object)
-register.tag('tagged_objects', do_tagged_objects)
View
0  applications/tagging/tests/__init__.py
No changes.
View
38 applications/tagging/tests/models.py
@@ -1,38 +0,0 @@
-from django.db import models
-
-from tagging.fields import TagField
-
-class Perch(models.Model):
- size = models.IntegerField()
- smelly = models.BooleanField(default=True)
-
-class Parrot(models.Model):
- state = models.CharField(max_length=50)
- perch = models.ForeignKey(Perch, null=True)
-
- def __unicode__(self):
- return self.state
-
- class Meta:
- ordering = ['state']
-
-class Link(models.Model):
- name = models.CharField(max_length=50)
-
- def __unicode__(self):
- return self.name
-
- class Meta:
- ordering = ['name']
-
-class Article(models.Model):
- name = models.CharField(max_length=50)
-
- def __unicode__(self):
- return self.name
-
- class Meta:
- ordering = ['name']
-
-class FormTest(models.Model):
- tags = TagField()
View
27 applications/tagging/tests/settings.py
@@ -1,27 +0,0 @@
-import os
-DIRNAME = os.path.dirname(__file__)
-
-DEFAULT_CHARSET = 'utf-8'
-
-DATABASE_ENGINE = 'sqlite3'
-DATABASE_NAME = os.path.join(DIRNAME, 'tagging_test.db')
-
-#DATABASE_ENGINE = 'mysql'
-#DATABASE_NAME = 'tagging_test'
-#DATABASE_USER = 'root'
-#DATABASE_PASSWORD = ''
-#DATABASE_HOST = 'localhost'
-#DATABASE_PORT = '3306'
-
-#DATABASE_ENGINE = 'postgresql_psycopg2'
-#DATABASE_NAME = 'tagging_test'
-#DATABASE_USER = 'postgres'
-#DATABASE_PASSWORD = ''
-#DATABASE_HOST = 'localhost'
-#DATABASE_PORT = '5432'
-
-INSTALLED_APPS = (
- 'django.contrib.contenttypes',
- 'tagging',
- 'tagging.tests',
-)
View
122 applications/tagging/tests/tags.txt
@@ -1,122 +0,0 @@
-NewMedia 53
-Website 45
-PR 44
-Status 44
-Collaboration 41
-Drupal 34
-Journalism 31
-Transparency 30
-Theory 29
-Decentralization 25
-EchoChamberProject 24
-OpenSource 23
-Film 22
-Blog 21
-Interview 21
-Political 21
-Worldview 21
-Communications 19
-Conference 19
-Folksonomy 15
-MediaCriticism 15
-Volunteer 15
-Dialogue 13
-InternationalLaw 13
-Rosen 12
-Evolution 11
-KentBye 11
-Objectivity 11
-Plante 11
-ToDo 11
-Advisor 10
-Civics 10
-Roadmap 10
-Wilber 9
-About 8
-CivicSpace 8
-Ecosystem 8
-Choice 7
-Murphy 7
-Sociology 7
-ACH 6
-del.icio.us 6
-IntelligenceAnalysis 6
-Science 6
-Credibility 5
-Distribution 5
-Diversity 5
-Errors 5
-FinalCutPro 5
-Fundraising 5
-Law 5
-PhilosophyofScience 5
-Podcast 5
-PoliticalBias 5
-Activism 4
-Analysis 4
-CBS 4
-DeceptionDetection 4
-Editing 4
-History 4
-RSS 4
-Social 4
-Subjectivity 4
-Vlog 4
-ABC 3
-ALTubes 3
-Economics 3
-FCC 3
-NYT 3
-Sirota 3
-Sundance 3
-Training 3
-Wiki 3
-XML 3
-Borger 2
-Brody 2
-Deliberation 2
-EcoVillage 2
-Identity 2
-LAMP 2
-Lobe 2
-Maine 2
-May 2
-MediaLogic 2
-Metaphor 2
-Mitchell 2
-NBC 2
-OHanlon 2
-Psychology 2
-Queen 2
-Software 2
-SpiralDynamics 2
-Strobel 2
-Sustainability 2
-Transcripts 2
-Brown 1
-Buddhism 1
-Community 1
-DigitalDivide 1
-Donnelly 1
-Education 1
-FairUse 1
-FireANT 1
-Google 1
-HumanRights 1
-KM 1
-Kwiatkowski 1
-Landay 1
-Loiseau 1
-Math 1
-Music 1
-Nature 1
-Schechter 1
-Screencast 1
-Sivaraksa 1
-Skype 1
-SocialCapital 1
-TagCloud 1
-Thielmann 1
-Thomas 1
-Tiger 1
-Wedgwood 1
View
434 applications/tagging/tests/tests.py
@@ -1,434 +0,0 @@
-# -*- coding: utf-8 -*-
-r"""
->>> import os
->>> from django import newforms as forms
->>> from tagging.forms import TagField
->>> from tagging import settings
->>> from tagging.models import Tag, TaggedItem
->>> from tagging.tests.models import Article, Link, Perch, Parrot, FormTest
->>> from tagging.utils import calculate_cloud, get_tag_list, get_tag, parse_tag_input
->>> from tagging.utils import LINEAR
->>> from tagging.validators import isTagList, isTag
-
-#############
-# Utilities #
-#############
-
-# Tag input ###################################################################
-
-# Simple space-delimited tags
->>> parse_tag_input('one')
-[u'one']
->>> parse_tag_input('one two')
-[u'one', u'two']
->>> parse_tag_input('one two three')
-[u'one', u'three', u'two']
->>> parse_tag_input('one one two two')
-[u'one', u'two']
-
-# Comma-delimited multiple words - an unquoted comma in the input will trigger
-# this.
->>> parse_tag_input(',one')
-[u'one']
->>> parse_tag_input(',one two')
-[u'one two']
->>> parse_tag_input(',one two three')
-[u'one two three']
->>> parse_tag_input('a-one, a-two and a-three')
-[u'a-one', u'a-two and a-three']
-
-# Double-quoted multiple words - a completed quote will trigger this.
-# Unclosed quotes are ignored.
->>> parse_tag_input('"one')
-[u'one']
->>> parse_tag_input('"one two')
-[u'one', u'two']
->>> parse_tag_input('"one two three')
-[u'one', u'three', u'two']
->>> parse_tag_input('"one two"')
-[u'one two']
->>> parse_tag_input('a-one "a-two and a-three"')
-[u'a-one', u'a-two and a-three']
-
-# No loose commas - split on spaces
->>> parse_tag_input('one two "thr,ee"')
-[u'one', u'thr,ee', u'two']
-
-# Loose commas - split on commas
->>> parse_tag_input('"one", two three')
-[u'one', u'two three']
-
-# Double quotes can contain commas
->>> parse_tag_input('a-one "a-two, and a-three"')
-[u'a-one', u'a-two, and a-three']
->>> parse_tag_input('"two", one, one, two, "one"')
-[u'one', u'two']
-
-# Bad users! Naughty users!
->>> parse_tag_input(None)
-[]
->>> parse_tag_input('')
-[]
->>> parse_tag_input('"')
-[]
->>> parse_tag_input('""')
-[]
->>> parse_tag_input('"' * 7)
-[]
->>> parse_tag_input(',,,,,,')
-[]
->>> parse_tag_input('",",",",",",","')
-[u',']
->>> parse_tag_input('a-one "a-two" and "a-three')
-[u'a-one', u'a-three', u'a-two', u'and']
-
-# Normalised Tag list input ###################################################
->>> cheese = Tag.objects.create(name='cheese')
->>> toast = Tag.objects.create(name='toast')
->>> get_tag_list(cheese)
-[<Tag: cheese>]
->>> get_tag_list('cheese toast')
-[<Tag: cheese>, <Tag: toast>]
->>> get_tag_list('cheese,toast')
-[<Tag: cheese>, <Tag: toast>]
->>> get_tag_list([])
-[]
->>> get_tag_list(['cheese', 'toast'])
-[<Tag: cheese>, <Tag: toast>]
->>> get_tag_list([cheese.id, toast.id])
-[<Tag: cheese>, <Tag: toast>]
->>> get_tag_list(['cheese', 'toast', 'ŠĐĆŽćžšđ'])
-[<Tag: cheese>, <Tag: toast>]
->>> get_tag_list([cheese, toast])
-[<Tag: cheese>, <Tag: toast>]
->>> get_tag_list((cheese, toast))
-(<Tag: cheese>, <Tag: toast>)
->>> get_tag_list(Tag.objects.filter(name__in=['cheese', 'toast']))
-[<Tag: cheese>, <Tag: toast>]
->>> get_tag_list(['cheese', toast])
-Traceback (most recent call last):
- ...
-ValueError: If a list or tuple of tags is provided, they must all be tag names, Tag objects or Tag ids.
->>> get_tag_list(29)
-Traceback (most recent call last):
- ...
-ValueError: The tag input given was invalid.
-
-# Normalised Tag input
->>> get_tag(cheese)
-<Tag: cheese>
->>> get_tag('cheese')
-<Tag: cheese>
->>> get_tag(cheese.id)
-<Tag: cheese>
->>> get_tag('mouse')
-
-# Tag clouds ##################################################################
->>> tags = []
->>> for line in open(os.path.join(os.path.dirname(__file__), 'tags.txt')).readlines():
-... name, count = line.rstrip().split()
-... tag = Tag(name=name)
-... tag.count = int(count)
-... tags.append(tag)
-
->>> sizes = {}
->>> for tag in calculate_cloud(tags, steps=5):
-... sizes[tag.font_size] = sizes.get(tag.font_size, 0) + 1
-
-# This isn't a pre-calculated test, just making sure it's consistent
->>> sizes
-{1: 48, 2: 30, 3: 19, 4: 15, 5: 10}
-
->>> sizes = {}
->>> for tag in calculate_cloud(tags, steps=5, distribution=LINEAR):
-... sizes[tag.font_size] = sizes.get(tag.font_size, 0) + 1
-
-# This isn't a pre-calculated test, just making sure it's consistent
->>> sizes
-{1: 97, 2: 12, 3: 7, 4: 2, 5: 4}
-
->>> calculate_cloud(tags, steps=5, distribution='cheese')
-Traceback (most recent call last):
- ...
-ValueError: Invalid distribution algorithm specified: cheese.
-
-# Validators ##################################################################
-
->>> isTagList('foo qwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvbn bar', {})
-Traceback (most recent call last):
- ...
-ValidationError: [u'Each tag may be no more than 50 characters long.']
-
->>> isTag('"test"', {})
->>> isTag(',test', {})
->>> isTag('f o o', {})
-Traceback (most recent call last):
- ...
-ValidationError: [u'Multiple tags were given.']
->>> isTagList('foo qwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvbn bar', {})
-Traceback (most recent call last):
- ...
-ValidationError: [u'Each tag may be no more than 50 characters long.']
-
-###########
-# Tagging #
-###########
-
-# Basic tagging ###############################################################
-
->>> dead = Parrot.objects.create(state='dead')
->>> Tag.objects.update_tags(dead, 'foo,bar,"ter"')
->>> Tag.objects.get_for_object(dead)
-[<Tag: bar>, <Tag: foo>, <Tag: ter>]
->>> Tag.objects.update_tags(dead, '"foo" bar "baz"')
->>> Tag.objects.get_for_object(dead)
-[<Tag: bar>, <Tag: baz>, <Tag: foo>]
->>> Tag.objects.add_tag(dead, 'foo')
->>> Tag.objects.get_for_object(dead)
-[<Tag: bar>, <Tag: baz>, <Tag: foo>]
->>> Tag.objects.add_tag(dead, 'zip')
->>> Tag.objects.get_for_object(dead)
-[<Tag: bar>, <Tag: baz>, <Tag: foo>, <Tag: zip>]
->>> Tag.objects.add_tag(dead, ' ')
-Traceback (most recent call last):
- ...
-AttributeError: No tags were given: " ".
->>> Tag.objects.add_tag(dead, 'one two')
-Traceback (most recent call last):
- ...
-AttributeError: Multiple tags were given: "one two".
-
-# Note that doctest in Python 2.4 (and maybe 2.5?) doesn't support non-ascii
-# characters in output, so we're displaying the repr() here.
->>> Tag.objects.update_tags(dead, 'ŠĐĆŽćžšđ')
->>> repr(Tag.objects.get_for_object(dead))
-'[<Tag: \xc5\xa0\xc4\x90\xc4\x86\xc5\xbd\xc4\x87\xc5\xbe\xc5\xa1\xc4\x91>]'
-
->>> Tag.objects.update_tags(dead, None)
->>> Tag.objects.get_for_object(dead)
-[]
-
-# Using a model's TagField
->>> f1 = FormTest.objects.create(tags=u'test3 test2 test1')
->>> Tag.objects.get_for_object(f1)
-[<Tag: test1>, <Tag: test2>, <Tag: test3>]
->>> f1.tags = u'test4'
->>> f1.save()
->>> Tag.objects.get_for_object(f1)
-[<Tag: test4>]
->>> f1.tags = ''
->>> f1.save()
->>> Tag.objects.get_for_object(f1)
-[]
-
-# Forcing tags to lowercase
->>> settings.FORCE_LOWERCASE_TAGS = True
->>> Tag.objects.update_tags(dead, 'foO bAr Ter')
->>> Tag.objects.get_for_object(dead)
-[<Tag: bar>, <Tag: foo>, <Tag: ter>]
->>> Tag.objects.update_tags(dead, 'foO bAr baZ')
->>> Tag.objects.get_for_object(dead)
-[<Tag: bar>, <Tag: baz>, <Tag: foo>]
->>> Tag.objects.add_tag(dead, 'FOO')
->>> Tag.objects.get_for_object(dead)
-[<Tag: bar>, <Tag: baz>, <Tag: foo>]
->>> Tag.objects.add_tag(dead, 'Zip')
->>> Tag.objects.get_for_object(dead)
-[<Tag: bar>, <Tag: baz>, <Tag: foo>, <Tag: zip>]
->>> Tag.objects.update_tags(dead, None)
->>> f1.tags = u'TEST5'
->>> f1.save()
->>> Tag.objects.get_for_object(f1)
-[<Tag: test5>]
->>> f1.tags
-u'test5'
-
-# Retrieving tags by Model ####################################################
-
->>> Tag.objects.usage_for_model(Parrot)
-[]
->>> parrot_details = (
-... ('pining for the fjords', 9, True, 'foo bar'),
-... ('passed on', 6, False, 'bar baz ter'),
-... ('no more', 4, True, 'foo ter'),
-... ('late', 2, False, 'bar ter'),
-... )
-
->>> for state, perch_size, perch_smelly, tags in parrot_details:
-... perch = Perch.objects.create(size=perch_size, smelly=perch_smelly)
-... parrot = Parrot.objects.create(state=state, perch=perch)
-... Tag.objects.update_tags(parrot, tags)
-
->>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_model(Parrot, counts=True)]
-[(u'bar', 3), (u'baz', 1), (u'foo', 2), (u'ter', 3)]
->>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_model(Parrot, min_count=2)]
-[(u'bar', 3), (u'foo', 2), (u'ter', 3)]
-
-# Limiting results to a subset of the model
->>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_model(Parrot, counts=True, filters=dict(state='no more'))]
-[(u'foo', 1), (u'ter', 1)]
->>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_model(Parrot, counts=True, filters=dict(state__startswith='p'))]
-[(u'bar', 2), (u'baz', 1), (u'foo', 1), (u'ter', 1)]
->>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_model(Parrot, counts=True, filters=dict(perch__size__gt=4))]
-[(u'bar', 2), (u'baz', 1), (u'foo', 1), (u'ter', 1)]
->>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_model(Parrot, counts=True, filters=dict(perch__smelly=True))]
-[(u'bar', 1), (u'foo', 2), (u'ter', 1)]
->>> [(tag.name, tag.count) for tag in Tag.objects.usage_for_model(Parrot, min_count=2, filters=dict(perch__smelly=True))]
-[(u'foo', 2)]
->>> [(tag.name, hasattr(tag, 'counts')) for tag in Tag.objects.usage_for_model(Parrot, filters=dict(perch__size__gt=4))]
-[(u'bar', False), (u'baz', False), (u'foo', False), (u'ter', False)]
->>> [(tag.name, hasattr(tag, 'counts')) for tag in Tag.objects.usage_for_model(Parrot, filters=dict(perch__size__gt=99))]
-[]
-
-# Related tags
->>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model(Tag.objects.filter(name__in=['bar']), Parrot, counts=True)]
-[(u'baz', 1), (u'foo', 1), (u'ter', 2)]
->>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model(Tag.objects.filter(name__in=['bar']), Parrot, min_count=2)]
-[(u'ter', 2)]
->>> [tag.name for tag in Tag.objects.related_for_model(Tag.objects.filter(name__in=['bar']), Parrot, counts=False)]
-[u'baz', u'foo', u'ter']
->>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model(Tag.objects.filter(name__in=['bar', 'ter']), Parrot, counts=True)]
-[(u'baz', 1)]
->>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model(Tag.objects.filter(name__in=['bar', 'ter', 'baz']), Parrot, counts=True)]
-[]
-
-# Once again, with feeling (strings)
->>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model('bar', Parrot, counts=True)]
-[(u'baz', 1), (u'foo', 1), (u'ter', 2)]
->>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model('bar', Parrot, min_count=2)]
-[(u'ter', 2)]
->>> [tag.name for tag in Tag.objects.related_for_model('bar', Parrot, counts=False)]
-[u'baz', u'foo', u'ter']
->>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model(['bar', 'ter'], Parrot, counts=True)]
-[(u'baz', 1)]
->>> [(tag.name, tag.count) for tag in Tag.objects.related_for_model(['bar', 'ter', 'baz'], Parrot, counts=True)]
-[]
-
-# Retrieving tagged objects by Model ##########################################
-
->>> foo = Tag.objects.get(name='foo')
->>> bar = Tag.objects.get(name='bar')
->>> baz = Tag.objects.get(name='baz')
->>> ter = Tag.objects.get(name='ter')
->>> TaggedItem.objects.get_by_model(Parrot, foo)
-[<Parrot: no more>, <Parrot: pining for the fjords>]
->>> TaggedItem.objects.get_by_model(Parrot, bar)
-[<Parrot: late>, <Parrot: passed on>, <Parrot: pining for the fjords>]
-
-# Intersections are supported
->>> TaggedItem.objects.get_by_model(Parrot, [foo, baz])
-[]
->>> TaggedItem.objects.get_by_model(Parrot, [foo, bar])
-[<Parrot: pining for the fjords>]
->>> TaggedItem.objects.get_by_model(Parrot, [bar, ter])
-[<Parrot: late>, <Parrot: passed on>]
-
-# You can also pass Tag QuerySets
->>> TaggedItem.objects.get_by_model(Parrot, Tag.objects.filter(name__in=['foo', 'baz']))
-[]
->>> TaggedItem.objects.get_by_model(Parrot, Tag.objects.filter(name__in=['foo', 'bar']))
-[<Parrot: pining for the fjords>]
->>> TaggedItem.objects.get_by_model(Parrot, Tag.objects.filter(name__in=['bar', 'ter']))
-[<Parrot: late>, <Parrot: passed on>]
-
-# You can also pass strings and lists of strings
->>> TaggedItem.objects.get_by_model(Parrot, 'foo baz')
-[]
->>> TaggedItem.objects.get_by_model(Parrot, 'foo bar')
-[<Parrot: pining for the fjords>]
->>> TaggedItem.objects.get_by_model(Parrot, 'bar ter')
-[<Parrot: late>, <Parrot: passed on>]
->>> TaggedItem.objects.get_by_model(Parrot, ['foo', 'baz'])
-[]
->>> TaggedItem.objects.get_by_model(Parrot, ['foo', 'bar'])
-[<Parrot: pining for the fjords>]
->>> TaggedItem.objects.get_by_model(Parrot, ['bar', 'ter'])
-[<Parrot: late>, <Parrot: passed on>]
-
-# Issue 50 - Get by non-existent tag
->>> TaggedItem.objects.get_by_model(Parrot, 'argatrons')
-[]
-
-# Unions
->>> TaggedItem.objects.get_union_by_model(Parrot, ['foo', 'ter'])
-[<Parrot: late>, <Parrot: no more>, <Parrot: passed on>, <Parrot: pining for the fjords>]
->>> TaggedItem.objects.get_union_by_model(Parrot, ['bar', 'baz'])
-[<Parrot: late>, <Parrot: passed on>, <Parrot: pining for the fjords>]
-
-# Retrieving related objects by Model #########################################
-
-# Related instances of the same Model
->>> l1 = Link.objects.create(name='link 1')
->>> Tag.objects.update_tags(l1, 'tag1 tag2 tag3 tag4 tag5')
->>> l2 = Link.objects.create(name='link 2')
->>> Tag.objects.update_tags(l2, 'tag1 tag2 tag3')
->>> l3 = Link.objects.create(name='link 3')
->>> Tag.objects.update_tags(l3, 'tag1')
->>> l4 = Link.objects.create(name='link 4')
->>> TaggedItem.objects.get_related(l1, Link)
-[<Link: link 2>, <Link: link 3>]
->>> TaggedItem.objects.get_related(l1, Link, num=1)
-[<Link: link 2>]
->>> TaggedItem.objects.get_related(l4, Link)
-[]
-
-# Related instance of a different Model
->>> a1 = Article.objects.create(name='article 1')
->>> Tag.objects.update_tags(a1, 'tag1 tag2 tag3 tag4')
->>> TaggedItem.objects.get_related(a1, Link)
-[<Link: link 1>, <Link: link 2>, <Link: link 3>]
->>> Tag.objects.update_tags(a1, 'tag6')
->>> TaggedItem.objects.get_related(a1, Link)
-[]
-
-################
-# Model Fields #
-################
-
-# TagField ####################################################################
-
-# Ensure that automatically created forms use TagField
->>> class TestForm(forms.ModelForm):
-... class Meta:
-... model = FormTest
->>> form = TestForm()
->>> form.fields['tags'].__class__.__name__
-'TagField'
-
-# Recreating string representaions of tag lists ###############################
->>> plain = Tag.objects.create(name='plain')
->>> spaces = Tag.objects.create(name='spa ces')
->>> comma = Tag.objects.create(name='com,ma')
-
->>> from tagging.utils import edit_string_for_tags
->>> edit_string_for_tags([plain])
-u'plain'
->>> edit_string_for_tags([plain, spaces])
-u'plain, spa ces'
->>> edit_string_for_tags([plain, spaces, comma])
-u'plain, spa ces, "com,ma"'
->>> edit_string_for_tags([plain, comma])
-u'plain "com,ma"'
->>> edit_string_for_tags([comma, spaces])
-u'"com,ma", spa ces'
-
-###############
-# Form Fields #
-###############
-
->>> t = TagField()
->>> t.clean('foo')
-u'foo'
->>> t.clean('foo bar baz')
-u'foo bar baz'
->>> t.clean('foo,bar,baz')
-u'foo,bar,baz'
->>> t.clean('foo, bar, baz')
-u'foo, bar, baz'
->>> t.clean('foo qwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvb bar')
-u'foo qwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvb bar'
->>> t.clean('foo qwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvbn bar')
-Traceback (most recent call last):
- ...
-ValidationError: [u'Each tag may be no more than 50 characters long.']
-"""
View
261 applications/tagging/utils.py
@@ -1,261 +0,0 @@
-"""
-Tagging utilities - from user tag input parsing to tag cloud
-calculation.
-"""
-import math
-import types
-
-from django.db.models.query import QuerySet
-from django.utils.encoding import force_unicode
-from django.utils.translation import ugettext as _
-
-# Python 2.3 compatibility
-if not hasattr(__builtins__, 'set'):
- from sets import Set as set
-
-def parse_tag_input(input):
- """
- Parses tag input, with multiple word input being activated and
- delineated by commas and double quotes. Quotes take precedence, so
- they may contain commas.
-
- Returns a sorted list of unique tag names.
- """
- if not input:
- return []
-
- input = force_unicode(input)
-
- # Special case - if there are no commas or double quotes in the
- # input, we don't *do* a recall... I mean, we know we only need to
- # split on spaces.
- if u',' not in input and u'"' not in input:
- words = list(set(split_strip(input, u' ')))
- words.sort()
- return words
-
- words = []
- buffer = []
- # Defer splitting of non-quoted sections until we know if there are
- # any unquoted commas.
- to_be_split = []
- saw_loose_comma = False
- open_quote = False
- i = iter(input)
- try:
- while 1:
- c = i.next()
- if c == u'"':
- if buffer:
- to_be_split.append(u''.join(buffer))
- buffer = []
- # Find the matching quote
- open_quote = True
- c = i.next()
- while c != u'"':
- buffer.append(c)
- c = i.next()
- if buffer:
- word = u''.join(buffer).strip()
- if word:
- words.append(word)
- buffer = []
- open_quote = False
- else:
- if not saw_loose_comma and c == u',':
- saw_loose_comma = True
- buffer.append(c)
- except StopIteration:
- # If we were parsing an open quote which was never closed treat
- # the buffer as unquoted.
- if buffer:
- if open_quote and u',' in buffer:
- saw_loose_comma = True
- to_be_split.append(u''.join(buffer))
- if to_be_split:
- if saw_loose_comma:
- delimiter = u','
- else:
- delimiter = u' '
- for chunk in to_be_split:
- words.extend(split_strip(chunk, delimiter))
- words = list(set(words))
- words.sort()
- return words
-
-def split_strip(input, delimiter=u','):
- """
- Splits ``input`` on ``delimiter``, stripping each resulting string
- and returning a list of non-empty strings.
- """
- if not input:
- return []
-
- words = [w.strip() for w in input.split(delimiter)]
- return [w for w in words if w]
-
-def edit_string_for_tags(tags):
- """
- Given list of ``Tag`` instances, creates a string representation of
- the list suitable for editing by the user, such that submitting the
- given string representation back without changing it will give the
- same list of tags.
-
- Tag names which contain commas will be double quoted.
-
- If any tag name which isn't being quoted contains whitespace, the
- resulting string of tag names will be comma-delimited, otherwise
- it will be space-delimited.
- """
- names = []
- use_commas = False
- for tag in tags:
- name = tag.name
- if u',' in name:
- names.append('"%s"' % name)
- continue
- elif u' ' in name:
- if not use_commas:
- use_commas = True
- names.append(name)
- if use_commas:
- glue = u', '
- else:
- glue = u' '
- return glue.join(names)
-
-def get_queryset_and_model(queryset_or_model):
- """
- Given a ``QuerySet`` or a ``Model``, returns a two-tuple of
- (queryset, model).
-
- If a ``Model`` is given, the ``QuerySet`` returned will be created
- using its default manager.
- """
- try:
- return queryset_or_model, queryset_or_model.model
- except AttributeError:
- return queryset_or_model._default_manager.all(), queryset_or_model
-
-def get_tag_list(tags):
- """
- Utility function for accepting tag input in a flexible manner.
-
- If a ``Tag`` object is given, it will be returned in a list as
- its single occupant.
-
- If given, the tag names in the following will be used to create a
- ``Tag`` ``QuerySet``:
-
- * A string, which may contain multiple tag names.
- * A list or tuple of strings corresponding to tag names.
- * A list or tuple of integers corresponding to tag ids.
-
- If given, the following will be returned as-is:
-
- * A list or tuple of ``Tag`` objects.
- * A ``Tag`` ``QuerySet``.
-
- """
- from tagging.models import Tag
- if isinstance(tags, Tag):
- return [tags]
- elif isinstance(tags, QuerySet) and tags.model is Tag:
- return tags
- elif isinstance(tags, types.StringTypes):
- return Tag.objects.filter(name__in=parse_tag_input(tags))
- elif isinstance(tags, (types.ListType, types.TupleType)):
- if len(tags) == 0:
- return tags
- contents = set()
- for item in tags:
- if isinstance(item, types.StringTypes):
- contents.add('string')
- elif isinstance(item, Tag):
- contents.add('tag')
- elif isinstance(item, (types.IntType, types.LongType)):
- contents.add('int')
- if len(contents) == 1:
- if 'string' in contents:
- return Tag.objects.filter(name__in=[force_unicode(tag) \
- for tag in tags])
- elif 'tag' in contents:
- return tags
- elif 'int' in contents:
- return Tag.objects.filter(id__in=tags)
- else:
- raise ValueError(_('If a list or tuple of tags is provided, they must all be tag names, Tag objects or Tag ids.'))
- else:
- raise ValueError(_('The tag input given was invalid.'))
-
-def get_tag(tag):
- """
- Utility function for accepting single tag input in a flexible
- manner.
-
- If a ``Tag`` object is given it will be returned as-is; if a
- string or integer are given, they will be used to lookup the
- appropriate ``Tag``.
-
- If no matching tag can be found, ``None`` will be returned.
- """
- from tagging.models import Tag
- if isinstance(tag, Tag):
- return tag
-
- try:
- if isinstance(tag, types.StringTypes):
- return Tag.objects.get(name=tag)
- elif isinstance(tag, (types.IntType, types.LongType)):
- return Tag.objects.get(id=tag)
- except Tag.DoesNotExist:
- pass
-
- return None
-
-# Font size distribution algorithms
-LOGARITHMIC, LINEAR = 1, 2
-
-def _calculate_thresholds(min_weight, max_weight, steps):
- delta = (max_weight - min_weight) / float(steps)
- return [min_weight + i * delta for i in range(1, steps + 1)]
-
-def _calculate_tag_weight(weight, max_weight, distribution):
- """
- Logarithmic tag weight calculation is based on code from the
- `Tag Cloud`_ plugin for Mephisto, by Sven Fuchs.
-
- .. _`Tag Cloud`: http://www.artweb-design.de/projects/mephisto-plugin-tag-cloud
- """
- if distribution == LINEAR or max_weight == 1:
- return weight
- elif distribution == LOGARITHMIC:
- return math.log(weight) * max_weight / math.log(max_weight)
- raise ValueError(_('Invalid distribution algorithm specified: %s.') % distribution)
-
-def calculate_cloud(tags, steps=4, distribution=LOGARITHMIC):
- """
- Add a ``font_size`` attribute to each tag according to the
- frequency of its use, as indicated by its ``count``
- attribute.
-
- ``steps`` defines the range of font sizes - ``font_size`` will
- be an integer between 1 and ``steps`` (inclusive).
-
- ``distribution`` defines the type of font size distribution
- algorithm which will be used - logarithmic or linear. It must be
- one of ``tagging.utils.LOGARITHMIC`` or ``tagging.utils.LINEAR``.
- """
- if len(tags) > 0:
- counts = [tag.count for tag in tags]
- min_weight = float(min(counts))
- max_weight = float(max(counts))
- thresholds = _calculate_thresholds(min_weight, max_weight, steps)
- for tag in tags:
- font_set = False
- tag_weight = _calculate_tag_weight(tag.count, max_weight, distribution)
- for i in range(steps):
- if not font_set and tag_weight <= thresholds[i]:
- tag.font_size = i + 1
- font_set = True
- return tags
View
30 applications/tagging/validators.py
@@ -1,30 +0,0 @@
-"""
-Oldforms validators for tagging related fields - these are still
-required for basic ``django.contrib.admin`` application field validation
-until the ``newforms-admin`` branch lands in trunk.
-"""
-from django.core.validators import ValidationError
-from django.utils.translation import ugettext as _
-
-from tagging import settings
-from tagging.utils import parse_tag_input
-
-def isTagList(field_data, all_data):
- """
- Validates that ``field_data`` is a valid list of tags.
- """
- for tag_name in parse_tag_input(field_data):
- if len(tag_name) > settings.MAX_TAG_LENGTH:
- raise ValidationError(
- _('Each tag may be no more than %s characters long.') % settings.MAX_TAG_LENGTH)
-
-def isTag(field_data, all_data):
- """
- Validates that ``field_data`` is a valid tag.
- """
- tag_names = parse_tag_input(field_data)
- if len(tag_names) > 1:
- raise ValidationError(_('Multiple tags were given.'))
- elif len(tag_names[0]) > settings.MAX_TAG_LENGTH:
- raise ValidationError(
- _('A tag may be no more than %s characters long.') % settings.MAX_TAG_LENGTH)
View
52 applications/tagging/views.py
@@ -1,52 +0,0 @@
-"""
-Tagging related views.
-"""
-from django.http import Http404
-from django.utils.translation import ugettext as _
-from django.views.generic.list_detail import object_list
-
-from tagging.models import Tag, TaggedItem
-from tagging.utils import get_tag, get_queryset_and_model
-
-def tagged_object_list(request, queryset_or_model=None, tag=None,
- related_tags=False, related_tag_counts=True, **kwargs):
- """
- A thin wrapper around
- ``django.views.generic.list_detail.object_list`` which creates a
- ``QuerySet`` containing instances of the given queryset or model
- tagged with the given tag.
-
- In addition to the context variables set up by ``object_list``, a
- ``tag`` context variable will contain the ``Tag`` instance for the
- tag.
-
- If ``related_tags`` is ``True``, a ``related_tags`` context variable
- will contain tags related to the given tag for the given model.
- Additionally, if ``related_tag_counts`` is ``True``, each related
- tag will have a ``count`` attribute indicating the number of items
- which have it in addition to the given tag.
- """
- if queryset_or_model is None:
- try:
- queryset_or_model = kwargs.pop('queryset_or_model')
- except KeyError:
- raise AttributeError(_('tagged_object_list must be called with a queryset or a model.'))
-
- if tag is None:
- try:
- tag = kwargs.pop('tag')
- except KeyError:
- raise AttributeError(_('tagged_object_list must be called with a tag.'))
-
- tag_instance = get_tag(tag)
- if tag_instance is None:
- raise Http404(_('No Tag found matching "%s".') % tag)
- queryset = TaggedItem.objects.get_by_model(queryset_or_model, tag_instance)
- if not kwargs.has_key('extra_context'):
- kwargs['extra_context'] = {}
- kwargs['extra_context']['tag'] = tag_instance
- if related_tags:
- kwargs['extra_context']['related_tags'] = \
- Tag.objects.related_for_model(tag_instance, queryset_or_model,
- counts=related_tag_counts)
- return object_list(request, queryset, **kwargs)
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