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from __future__ import unicode_literals
import warnings
from django import forms
from django.conf import settings
from django.contrib.admin.templatetags.admin_static import static
from django.contrib.admin.utils import (
display_for_field, flatten_fieldsets, help_text_for_field, label_for_field,
lookup_field,
)
from django.core.exceptions import ObjectDoesNotExist
from django.db.models.fields.related import ManyToManyRel
from django.forms.utils import flatatt
from django.template.defaultfilters import capfirst, linebreaksbr
from django.utils import six
from django.utils.deprecation import RemovedInDjango20Warning
from django.utils.encoding import force_text, smart_text
from django.utils.functional import cached_property
from django.utils.html import conditional_escape, format_html
from django.utils.safestring import mark_safe
from django.utils.translation import ugettext_lazy as _
ACTION_CHECKBOX_NAME = '_selected_action'
class ActionForm(forms.Form):
action = forms.ChoiceField(label=_('Action:'))
select_across = forms.BooleanField(label='', required=False, initial=0,
widget=forms.HiddenInput({'class': 'select-across'}))
checkbox = forms.CheckboxInput({'class': 'action-select'}, lambda value: False)
class AdminForm(object):
def __init__(self, form, fieldsets, prepopulated_fields, readonly_fields=None, model_admin=None):
self.form, self.fieldsets = form, fieldsets
self.prepopulated_fields = [{
'field': form[field_name],
'dependencies': [form[f] for f in dependencies]
} for field_name, dependencies in prepopulated_fields.items()]
self.model_admin = model_admin
if readonly_fields is None:
readonly_fields = ()
self.readonly_fields = readonly_fields
def __iter__(self):
for name, options in self.fieldsets:
yield Fieldset(
self.form, name,
readonly_fields=self.readonly_fields,
model_admin=self.model_admin,
**options
)
def _media(self):
media = self.form.media
for fs in self:
media = media + fs.media
return media
media = property(_media)
class Fieldset(object):
def __init__(self, form, name=None, readonly_fields=(), fields=(), classes=(),
description=None, model_admin=None):
self.form = form
self.name, self.fields = name, fields
self.classes = ' '.join(classes)
self.description = description
self.model_admin = model_admin
self.readonly_fields = readonly_fields
def _media(self):
if 'collapse' in self.classes:
extra = '' if settings.DEBUG else '.min'
js = ['jquery%s.js' % extra,
'jquery.init.js',
'collapse%s.js' % extra]
return forms.Media(js=[static('admin/js/%s' % url) for url in js])
return forms.Media()
media = property(_media)
def __iter__(self):
for field in self.fields:
yield Fieldline(self.form, field, self.readonly_fields, model_admin=self.model_admin)
class Fieldline(object):
def __init__(self, form, field, readonly_fields=None, model_admin=None):
self.form = form # A django.forms.Form instance
if not hasattr(field, "__iter__") or isinstance(field, six.text_type):
self.fields = [field]
else:
self.fields = field
self.has_visible_field = not all(field in self.form.fields and
self.form.fields[field].widget.is_hidden
for field in self.fields)
self.model_admin = model_admin
if readonly_fields is None:
readonly_fields = ()
self.readonly_fields = readonly_fields
def __iter__(self):
for i, field in enumerate(self.fields):
if field in self.readonly_fields:
yield AdminReadonlyField(self.form, field, is_first=(i == 0),
model_admin=self.model_admin)
else:
yield AdminField(self.form, field, is_first=(i == 0))
def errors(self):
return mark_safe(
'\n'.join(self.form[f].errors.as_ul()
for f in self.fields if f not in self.readonly_fields).strip('\n')
)
class AdminField(object):
def __init__(self, form, field, is_first):
self.field = form[field] # A django.forms.BoundField instance
self.is_first = is_first # Whether this field is first on the line
self.is_checkbox = isinstance(self.field.field.widget, forms.CheckboxInput)
self.is_readonly = False
def label_tag(self):
classes = []
contents = conditional_escape(force_text(self.field.label))
if self.is_checkbox:
classes.append('vCheckboxLabel')
if self.field.field.required:
classes.append('required')
if not self.is_first:
classes.append('inline')
attrs = {'class': ' '.join(classes)} if classes else {}
# checkboxes should not have a label suffix as the checkbox appears
# to the left of the label.
return self.field.label_tag(contents=mark_safe(contents), attrs=attrs,
label_suffix='' if self.is_checkbox else None)
def errors(self):
return mark_safe(self.field.errors.as_ul())
class AdminReadonlyField(object):
def __init__(self, form, field, is_first, model_admin=None):
# Make self.field look a little bit like a field. This means that
# {{ field.name }} must be a useful class name to identify the field.
# For convenience, store other field-related data here too.
if callable(field):
class_name = field.__name__ if field.__name__ != '<lambda>' else ''
else:
class_name = field
if form._meta.labels and class_name in form._meta.labels:
label = form._meta.labels[class_name]
else:
label = label_for_field(field, form._meta.model, model_admin)
if form._meta.help_texts and class_name in form._meta.help_texts:
help_text = form._meta.help_texts[class_name]
else:
help_text = help_text_for_field(class_name, form._meta.model)
self.field = {
'name': class_name,
'label': label,
'help_text': help_text,
'field': field,
}
self.form = form
self.model_admin = model_admin
self.is_first = is_first
self.is_checkbox = False
self.is_readonly = True
def label_tag(self):
attrs = {}
if not self.is_first:
attrs["class"] = "inline"
label = self.field['label']
return format_html('<label{}>{}:</label>',
flatatt(attrs),
capfirst(force_text(label)))
def contents(self):
from django.contrib.admin.templatetags.admin_list import _boolean_icon
from django.contrib.admin.views.main import EMPTY_CHANGELIST_VALUE
field, obj, model_admin = self.field['field'], self.form.instance, self.model_admin
try:
f, attr, value = lookup_field(field, obj, model_admin)
except (AttributeError, ValueError, ObjectDoesNotExist):
result_repr = EMPTY_CHANGELIST_VALUE
else:
if f is None:
boolean = getattr(attr, "boolean", False)
if boolean:
result_repr = _boolean_icon(value)
else:
result_repr = smart_text(value)
if getattr(attr, "allow_tags", False):
result_repr = mark_safe(result_repr)
else:
result_repr = linebreaksbr(result_repr)
else:
if isinstance(f.remote_field, ManyToManyRel) and value is not None:
result_repr = ", ".join(map(six.text_type, value.all()))
else:
result_repr = display_for_field(value, f)
return conditional_escape(result_repr)
class InlineAdminFormSet(object):
"""
A wrapper around an inline formset for use in the admin system.
"""
def __init__(self, inline, formset, fieldsets, prepopulated_fields=None,
readonly_fields=None, model_admin=None):
self.opts = inline
self.formset = formset
self.fieldsets = fieldsets
self.model_admin = model_admin
if readonly_fields is None:
readonly_fields = ()
self.readonly_fields = readonly_fields
if prepopulated_fields is None:
prepopulated_fields = {}
self.prepopulated_fields = prepopulated_fields
def __iter__(self):
for form, original in zip(self.formset.initial_forms, self.formset.get_queryset()):
view_on_site_url = self.opts.get_view_on_site_url(original)
yield InlineAdminForm(self.formset, form, self.fieldsets,
self.prepopulated_fields, original, self.readonly_fields,
model_admin=self.opts, view_on_site_url=view_on_site_url)
for form in self.formset.extra_forms:
yield InlineAdminForm(self.formset, form, self.fieldsets,
self.prepopulated_fields, None, self.readonly_fields,
model_admin=self.opts)
yield InlineAdminForm(self.formset, self.formset.empty_form,
self.fieldsets, self.prepopulated_fields, None,
self.readonly_fields, model_admin=self.opts)
def fields(self):
fk = getattr(self.formset, "fk", None)
for i, field_name in enumerate(flatten_fieldsets(self.fieldsets)):
if fk and fk.name == field_name:
continue
if field_name in self.readonly_fields:
yield {
'label': label_for_field(field_name, self.opts.model, self.opts),
'widget': {
'is_hidden': False
},
'required': False,
'help_text': help_text_for_field(field_name, self.opts.model),
}
else:
yield self.formset.form.base_fields[field_name]
def _media(self):
media = self.opts.media + self.formset.media
for fs in self:
media = media + fs.media
return media
media = property(_media)
class InlineAdminForm(AdminForm):
"""
A wrapper around an inline form for use in the admin system.
"""
def __init__(self, formset, form, fieldsets, prepopulated_fields, original,
readonly_fields=None, model_admin=None, view_on_site_url=None):
self.formset = formset
self.model_admin = model_admin
self.original = original
self.show_url = original and view_on_site_url is not None
self.absolute_url = view_on_site_url
super(InlineAdminForm, self).__init__(form, fieldsets, prepopulated_fields,
readonly_fields, model_admin)
@cached_property
def original_content_type_id(self):
warnings.warn(
'InlineAdminForm.original_content_type_id is deprecated and will be '
'removed in Django 2.0. If you were using this attribute to construct '
'the "view on site" URL, use the `absolute_url` attribute instead.',
RemovedInDjango20Warning, stacklevel=2
)
if self.original is not None:
# Since this module gets imported in the application's root package,
# it cannot import models from other applications at the module level.
from django.contrib.contenttypes.models import ContentType
return ContentType.objects.get_for_model(self.original).pk
raise AttributeError
def __iter__(self):
for name, options in self.fieldsets:
yield InlineFieldset(self.formset, self.form, name,
self.readonly_fields, model_admin=self.model_admin, **options)
def needs_explicit_pk_field(self):
# Auto fields are editable (oddly), so need to check for auto or non-editable pk
if self.form._meta.model._meta.has_auto_field or not self.form._meta.model._meta.pk.editable:
return True
# Also search any parents for an auto field. (The pk info is propagated to child
# models so that does not need to be checked in parents.)
for parent in self.form._meta.model._meta.get_parent_list():
if parent._meta.has_auto_field:
return True
return False
def pk_field(self):
return AdminField(self.form, self.formset._pk_field.name, False)
def fk_field(self):
fk = getattr(self.formset, "fk", None)
if fk:
return AdminField(self.form, fk.name, False)
else:
return ""
def deletion_field(self):
from django.forms.formsets import DELETION_FIELD_NAME
return AdminField(self.form, DELETION_FIELD_NAME, False)
def ordering_field(self):
from django.forms.formsets import ORDERING_FIELD_NAME
return AdminField(self.form, ORDERING_FIELD_NAME, False)
class InlineFieldset(Fieldset):
def __init__(self, formset, *args, **kwargs):
self.formset = formset
super(InlineFieldset, self).__init__(*args, **kwargs)
def __iter__(self):
fk = getattr(self.formset, "fk", None)
for field in self.fields:
if fk and fk.name == field:
continue
yield Fieldline(self.form, field, self.readonly_fields,
model_admin=self.model_admin)
class AdminErrorList(forms.utils.ErrorList):
"""
Stores all errors for the form/formsets in an add/change stage view.
"""
def __init__(self, form, inline_formsets):
super(AdminErrorList, self).__init__()
if form.is_bound:
self.extend(form.errors.values())
for inline_formset in inline_formsets:
self.extend(inline_formset.non_form_errors())
for errors_in_inline_form in inline_formset.errors:
self.extend(errors_in_inline_form.values())
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