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# -*- coding: utf-8 -*-
from cms.utils.helpers import reversion_register
from cms.utils.placeholder import PlaceholderNoAction
from django.core.urlresolvers import reverse
from django.db import models
from django.forms.widgets import Media
from django.utils.translation import ugettext_lazy as _
import operator
class Placeholder(models.Model):
slot = models.CharField(_("slot"), max_length=50, db_index=True, editable=False)
default_width = models.PositiveSmallIntegerField(_("width"), null=True, editable=False)
class Meta:
app_label = 'cms'
def __unicode__(self):
return self.slot
def get_add_url(self):
return self._get_url('add_plugin')
def get_move_url(self):
return self._get_url('move_plugin')
def get_remove_url(self):
return self._get_url('remove_plugin')
def get_changelist_url(self):
return self._get_url('changelist')
def _get_url(self, key):
model = self._get_attached_model()
if not model:
return reverse('admin:cms_page_%s' % key)
app_label = model._meta.app_label
model_name = model.__name__.lower()
return reverse('admin:%s_%s_%s' % (app_label, model_name, key))
def _get_permission(self, request, key):
Generic method to check the permissions for a request for a given key,
the key can be: 'add', 'change' or 'delete'.
if request.user.is_superuser:
return True
found = False
# check all attached models for change permissions
for model in self._get_attached_models():
opts = model._meta
perm_accessor = getattr(opts, 'get_%s_permission' % key)
perm_code = '%s.%s' % (opts.app_label, perm_accessor())
# if they don't have the permission for this attached model, bail out
if not request.user.has_perm(perm_code):
return False
found = True
return found
def has_change_permission(self, request):
return self._get_permission(request, 'change')
def has_add_permission(self, request):
return self._get_permission(request, 'add')
def has_delete_permission(self, request):
return self._get_permission(request, 'delete')
def render(self, context, width):
from cms.plugin_rendering import render_placeholder
if not 'request' in context:
return '<!-- missing request -->'
width = width or self.default_width
if width:
context.update({'width': width})
return render_placeholder(self, context)
def get_media(self, request, context):
from cms.plugins.utils import get_plugin_media
media_classes = [get_plugin_media(request, context, plugin) for plugin in self.cmsplugin_set.all()]
if media_classes:
return reduce(operator.add, media_classes)
return Media()
def _get_attached_fields(self):
Returns an ITERATOR of all non-cmsplugin reverse foreign key related fields.
from cms.models import CMSPlugin
for rel in self._meta.get_all_related_objects():
if issubclass(rel.model, CMSPlugin):
field = getattr(self, rel.get_accessor_name())
if field.count():
yield rel.field
def _get_attached_field(self):
from cms.models import CMSPlugin
if not hasattr(self, '_attached_field_cache'):
self._attached_field_cache = None
for rel in self._meta.get_all_related_objects():
if issubclass(rel.model, CMSPlugin):
field = getattr(self, rel.get_accessor_name())
if field.count():
self._attached_field_cache = rel.field
return self._attached_field_cache
def _get_attached_field_name(self):
field = self._get_attached_field()
if field:
return None
def _get_attached_model(self):
field = self._get_attached_field()
if field:
return field.model
return None
def _get_attached_models(self):
Returns a list of models of attached to this placeholder.
return [field.model for field in self._get_attached_fields()]
def get_plugins_list(self):
return list(self.get_plugins())
def get_plugins(self):
return self.cmsplugin_set.all().order_by('tree_id', '-rght')
def actions(self):
if not hasattr(self, '_actions_cache'):
field = self._get_attached_field()
self._actions_cache = getattr(field, 'actions', PlaceholderNoAction())
return self._actions_cache
reversion_register(Placeholder) # follow=["cmsplugin_set"] not following plugins since they are a spechial case
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