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group.py
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group.py
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import logging
import genshi
import datetime
from urllib import urlencode
from ckan.lib.base import BaseController, c, model, request, render, h, g
from ckan.lib.base import ValidationException, abort, gettext
from pylons.i18n import get_lang, _
from ckan.lib.helpers import Page
import ckan.lib.maintain as maintain
from ckan.lib.navl.dictization_functions import DataError, unflatten, validate
from ckan.logic import NotFound, NotAuthorized, ValidationError
from ckan.logic import check_access, get_action
from ckan.logic import tuplize_dict, clean_dict, parse_params
import ckan.forms
import ckan.logic.action.get
import ckan.lib.search as search
from ckan.lib.plugins import lookup_group_plugin
log = logging.getLogger(__name__)
class GroupController(BaseController):
## hooks for subclasses
def _group_form(self, group_type=None):
return lookup_group_plugin(group_type).group_form()
def _form_to_db_schema(self, group_type=None):
return lookup_group_plugin(group_type).form_to_db_schema()
def _db_to_form_schema(self, group_type=None):
'''This is an interface to manipulate data from the database
into a format suitable for the form (optional)'''
return lookup_group_plugin(group_type).db_to_form_schema()
def _setup_template_variables(self, context, data_dict, group_type=None):
return lookup_group_plugin(group_type).\
setup_template_variables(context, data_dict)
def _new_template(self, group_type):
return lookup_group_plugin(group_type).new_template()
def _index_template(self, group_type):
return lookup_group_plugin(group_type).index_template()
def _read_template(self, group_type):
return lookup_group_plugin(group_type).read_template()
def _history_template(self, group_type):
return lookup_group_plugin(group_type).history_template()
## end hooks
def _guess_group_type(self, expecting_name=False):
"""
Guess the type of group from the URL handling the case
where there is a prefix on the URL (such as /data/organization)
"""
parts = [x for x in request.path.split('/') if x]
idx = -1
if expecting_name:
idx = -2
gt = parts[idx]
if gt == 'group':
gt = None
return gt
def index(self):
group_type = self._guess_group_type()
context = {'model': model, 'session': model.Session,
'user': c.user or c.author, 'for_view': True,
'with_private': False}
data_dict = {'all_fields': True}
try:
check_access('site_read', context)
except NotAuthorized:
abort(401, _('Not authorized to see this page'))
results = get_action('group_list')(context, data_dict)
c.page = Page(
collection=results,
page=request.params.get('page', 1),
url=h.pager_url,
items_per_page=20
)
return render(self._index_template(group_type))
def read(self, id):
from ckan.lib.search import SearchError
group_type = self._get_group_type(id.split('@')[0])
context = {'model': model, 'session': model.Session,
'user': c.user or c.author,
'schema': self._db_to_form_schema(group_type=group_type),
'for_view': True, 'extras_as_string': True}
data_dict = {'id': id}
# unicode format (decoded from utf8)
q = c.q = request.params.get('q', '')
try:
c.group_dict = get_action('group_show')(context, data_dict)
c.group = context['group']
except NotFound:
abort(404, _('Group not found'))
except NotAuthorized:
abort(401, _('Unauthorized to read group %s') % id)
# Search within group
q += ' groups: "%s"' % c.group_dict.get('name')
try:
description_formatted = ckan.misc.MarkdownFormat().to_html(
c.group_dict.get('description', ''))
c.description_formatted = genshi.HTML(description_formatted)
except Exception, e:
error_msg = "<span class='inline-warning'>%s</span>" %\
_("Cannot render description")
c.description_formatted = genshi.HTML(error_msg)
c.group_admins = self.authorizer.get_admins(c.group)
context['return_query'] = True
limit = 20
try:
page = int(request.params.get('page', 1))
except ValueError, e:
abort(400, ('"page" parameter must be an integer'))
# most search operations should reset the page counter:
params_nopage = [(k, v) for k, v in request.params.items()
if k != 'page']
sort_by = request.params.get('sort', 'name asc')
def search_url(params):
url = h.url_for(controller='group', action='read',
id=c.group_dict.get('name'))
params = [(k, v.encode('utf-8') if isinstance(v, basestring)
else str(v)) for k, v in params]
return url + u'?' + urlencode(params)
def drill_down_url(**by):
return h.add_url_param(alternative_url=None,
controller='group', action='read',
extras=dict(id=c.group_dict.get('name')),
new_params=by)
c.drill_down_url = drill_down_url
def remove_field(key, value=None, replace=None):
return h.remove_url_param(key, value=value, replace=replace,
controller='group', action='read',
extras=dict(id=c.group_dict.get('name')))
c.remove_field = remove_field
def pager_url(q=None, page=None):
params = list(params_nopage)
params.append(('page', page))
return search_url(params)
try:
c.fields = []
search_extras = {}
for (param, value) in request.params.items():
if not param in ['q', 'page', 'sort'] \
and len(value) and not param.startswith('_'):
if not param.startswith('ext_'):
c.fields.append((param, value))
q += ' %s: "%s"' % (param, value)
else:
search_extras[param] = value
fq = 'capacity:"public"'
if (c.userobj and c.group and c.userobj.is_in_group(c.group)):
fq = ''
context['ignore_capacity_check'] = True
data_dict = {
'q': q,
'fq': fq,
'facet.field': g.facets,
'rows': limit,
'sort': sort_by,
'start': (page - 1) * limit,
'extras': search_extras
}
query = get_action('package_search')(context, data_dict)
c.page = h.Page(
collection=query['results'],
page=page,
url=pager_url,
item_count=query['count'],
items_per_page=limit
)
c.facets = query['facets']
maintain.deprecate_context_item(
'facets',
'Use `c.search_facets` instead.')
c.search_facets = query['search_facets']
c.facet_titles = {'groups': _('Groups'),
'tags': _('Tags'),
'res_format': _('Formats'),
'license': _('Licence'), }
c.search_facets_limits = {}
for facet in c.facets.keys():
limit = int(request.params.get('_%s_limit' % facet, 10))
c.search_facets_limits[facet] = limit
c.page.items = query['results']
c.sort_by_selected = sort_by
except SearchError, se:
log.error('Group search error: %r', se.args)
c.query_error = True
c.facets = {}
c.page = h.Page(collection=[])
# Add the group's activity stream (already rendered to HTML) to the
# template context for the group/read.html template to retrieve later.
c.group_activity_stream = \
get_action('group_activity_list_html')(context,
{'id': c.group_dict['id']})
return render(self._read_template(c.group_dict['type']))
def new(self, data=None, errors=None, error_summary=None):
group_type = self._guess_group_type(True)
if data:
data['type'] = group_type
context = {'model': model, 'session': model.Session,
'user': c.user or c.author, 'extras_as_string': True,
'save': 'save' in request.params,
'parent': request.params.get('parent', None)}
try:
check_access('group_create', context)
except NotAuthorized:
abort(401, _('Unauthorized to create a group'))
if context['save'] and not data:
return self._save_new(context, group_type)
data = data or {}
errors = errors or {}
error_summary = error_summary or {}
vars = {'data': data, 'errors': errors,
'error_summary': error_summary, 'action': 'new'}
self._setup_template_variables(context, data, group_type=group_type)
c.form = render(self._group_form(group_type=group_type),
extra_vars=vars)
return render(self._new_template(group_type))
def edit(self, id, data=None, errors=None, error_summary=None):
group_type = self._get_group_type(id.split('@')[0])
context = {'model': model, 'session': model.Session,
'user': c.user or c.author, 'extras_as_string': True,
'save': 'save' in request.params,
'for_edit': True,
'parent': request.params.get('parent', None)
}
data_dict = {'id': id}
if context['save'] and not data:
return self._save_edit(id, context)
try:
old_data = get_action('group_show')(context, data_dict)
c.grouptitle = old_data.get('title')
c.groupname = old_data.get('name')
data = data or old_data
except NotFound:
abort(404, _('Group not found'))
except NotAuthorized:
abort(401, _('Unauthorized to read group %s') % '')
group = context.get("group")
c.group = group
try:
check_access('group_update', context)
except NotAuthorized, e:
abort(401, _('User %r not authorized to edit %s') % (c.user, id))
errors = errors or {}
vars = {'data': data, 'errors': errors,
'error_summary': error_summary, 'action': 'edit'}
self._setup_template_variables(context, data, group_type=group_type)
c.form = render(self._group_form(group_type), extra_vars=vars)
return render('group/edit.html')
def _get_group_type(self, id):
"""
Given the id of a group it determines the type of a group given
a valid id/name for the group.
"""
group = model.Group.get(id)
if not group:
return None
return group.type
def _save_new(self, context, group_type=None):
try:
data_dict = clean_dict(unflatten(
tuplize_dict(parse_params(request.params))))
data_dict['type'] = group_type or 'group'
context['message'] = data_dict.get('log_message', '')
data_dict['users'] = [{'name': c.user, 'capacity': 'admin'}]
group = get_action('group_create')(context, data_dict)
# Redirect to the appropriate _read route for the type of group
h.redirect_to(group['type'] + '_read', id=group['name'])
except NotAuthorized:
abort(401, _('Unauthorized to read group %s') % '')
except NotFound, e:
abort(404, _('Group not found'))
except DataError:
abort(400, _(u'Integrity Error'))
except ValidationError, e:
errors = e.error_dict
error_summary = e.error_summary
return self.new(data_dict, errors, error_summary)
def _force_reindex(self, grp):
''' When the group name has changed, we need to force a reindex
of the datasets within the group, otherwise they will stop
appearing on the read page for the group (as they're connected via
the group name)'''
group = model.Group.get(grp['name'])
for dataset in group.active_packages().all():
search.rebuild(dataset.name)
def _save_edit(self, id, context):
try:
data_dict = clean_dict(unflatten(
tuplize_dict(parse_params(request.params))))
context['message'] = data_dict.get('log_message', '')
data_dict['id'] = id
group = get_action('group_update')(context, data_dict)
if id != group['name']:
self._force_reindex(group)
h.redirect_to('%s_read' % str(group['type']), id=group['name'])
except NotAuthorized:
abort(401, _('Unauthorized to read group %s') % id)
except NotFound, e:
abort(404, _('Group not found'))
except DataError:
abort(400, _(u'Integrity Error'))
except ValidationError, e:
errors = e.error_dict
error_summary = e.error_summary
return self.edit(id, data_dict, errors, error_summary)
def authz(self, id):
group = model.Group.get(id)
if group is None:
abort(404, _('Group not found'))
c.groupname = group.name
c.grouptitle = group.display_name
try:
context = \
{'model': model, 'user': c.user or c.author, 'group': group}
check_access('group_edit_permissions', context)
c.authz_editable = True
c.group = context['group']
except NotAuthorized:
c.authz_editable = False
if not c.authz_editable:
abort(401,
gettext('User %r not authorized to edit %s authorizations') %
(c.user, id))
roles = self._handle_update_of_authz(group)
self._prepare_authz_info_for_render(roles)
return render('group/authz.html')
def delete(self, id):
if 'cancel' in request.params:
h.redirect_to(controller='group', action='edit', id=id)
context = {'model': model, 'session': model.Session,
'user': c.user or c.author}
try:
check_access('group_delete', context, {'id': id})
except NotAuthorized:
abort(401, _('Unauthorized to delete group %s') % '')
try:
if request.method == 'POST':
get_action('group_delete')(context, {'id': id})
h.flash_notice(_('Group has been deleted.'))
h.redirect_to(controller='group', action='index')
c.group_dict = get_action('group_show')(context, {'id': id})
except NotAuthorized:
abort(401, _('Unauthorized to delete group %s') % '')
except NotFound:
abort(404, _('Group not found'))
return render('group/confirm_delete.html')
def history(self, id):
if 'diff' in request.params or 'selected1' in request.params:
try:
params = {'id': request.params.getone('group_name'),
'diff': request.params.getone('selected1'),
'oldid': request.params.getone('selected2'),
}
except KeyError, e:
if 'group_name' in dict(request.params):
id = request.params.getone('group_name')
c.error = \
_('Select two revisions before doing the comparison.')
else:
params['diff_entity'] = 'group'
h.redirect_to(controller='revision', action='diff', **params)
context = {'model': model, 'session': model.Session,
'user': c.user or c.author,
'schema': self._form_to_db_schema()}
data_dict = {'id': id}
try:
c.group_dict = get_action('group_show')(context, data_dict)
c.group_revisions = get_action('group_revision_list')(context,
data_dict)
#TODO: remove
# Still necessary for the authz check in group/layout.html
c.group = context['group']
except NotFound:
abort(404, _('Group not found'))
except NotAuthorized:
abort(401, _('User %r not authorized to edit %r') % (c.user, id))
format = request.params.get('format', '')
if format == 'atom':
# Generate and return Atom 1.0 document.
from webhelpers.feedgenerator import Atom1Feed
feed = Atom1Feed(
title=_(u'CKAN Group Revision History'),
link=h.url_for(controller='group', action='read',
id=c.group_dict['name']),
description=_(u'Recent changes to CKAN Group: ') +
c.group_dict['display_name'],
language=unicode(get_lang()),
)
for revision_dict in c.group_revisions:
revision_date = h.date_str_to_datetime(
revision_dict['timestamp'])
try:
dayHorizon = int(request.params.get('days'))
except:
dayHorizon = 30
dayAge = (datetime.datetime.now() - revision_date).days
if dayAge >= dayHorizon:
break
if revision_dict['message']:
item_title = u'%s' % revision_dict['message'].\
split('\n')[0]
else:
item_title = u'%s' % revision_dict['id']
item_link = h.url_for(controller='revision', action='read',
id=revision_dict['id'])
item_description = _('Log message: ')
item_description += '%s' % (revision_dict['message'] or '')
item_author_name = revision_dict['author']
item_pubdate = revision_date
feed.add_item(
title=item_title,
link=item_link,
description=item_description,
author_name=item_author_name,
pubdate=item_pubdate,
)
feed.content_type = 'application/atom+xml'
return feed.writeString('utf-8')
return render(self._history_template(c.group_dict['type']))
def _render_edit_form(self, fs):
# errors arrive in c.error and fs.errors
c.fieldset = fs
c.fieldset2 = ckan.forms.get_package_group_fieldset()
return render('group/edit_form.html')
def _update(self, fs, group_name, group_id):
'''
Writes the POST data (associated with a group edit) to the database
@input c.error
'''
validation = fs.validate()
if not validation:
c.form = self._render_edit_form(fs)
raise ValidationException(fs)
try:
fs.sync()
except Exception, inst:
model.Session.rollback()
raise
else:
model.Session.commit()
def _update_authz(self, fs):
validation = fs.validate()
if not validation:
c.form = self._render_edit_form(fs)
raise ValidationException(fs)
try:
fs.sync()
except Exception, inst:
model.Session.rollback()
raise
else:
model.Session.commit()