+class NodeNavigationOverride(Entity):
+ parent = models.ForeignKey(Node, related_name="child_navigation_overrides", blank=True, null=True)
+ child = models.ForeignKey(Node, related_name="navigation_overrides")
+
+ title = models.CharField(max_length=100, blank=True)
+ url = models.CharField(max_length=200, validators=[RedirectValidator()], blank=True)
+ order = models.PositiveSmallIntegerField(blank=True, null=True)
+ child_navigation = JSONField()
+ hide = models.BooleanField()
+
+ def get_navigation(self, node, max_depth):
+ default = node.view.get_navigation(node, max_depth)
+ if self.url:
+ default['url'] = self.url
+ if self.title:
+ default['title'] = self.title
+ if self.order:
+ default['order'] = self.order
+ if isinstance(self.child_navigation, list) and node.get_level() < max_depth:
+ child_navigation = self.child_navigation[:]
+
+ for child in child_navigation:
+ child['url'] = default['url'] + child['url']
+
+ if 'children' in default:
+ overridden = set([child['url'] for child in default['children']]) & set([child['url'] for child in self.child_navigation])
+ if overridden:
+ for child in default[:]:
+ if child['url'] in overridden:
+ default.remove(child)
+ default['children'] += self.child_navigation
+ else:
+ default['children'] = self.child_navigation
+ return default
+
+ class Meta:
+ ordering = ['order']
+ unique_together = ('parent', 'child',)
+ app_label = 'philo'
+
+
+class View(Entity):
+ nodes = generic.GenericRelation(Node, content_type_field='view_content_type', object_id_field='view_object_id')
+
+ accepts_subpath = False
+
+ def get_subpath(self, obj):
+ if not self.accepts_subpath:
+ raise ViewDoesNotProvideSubpaths
+
+ view_name, args, kwargs = self.get_reverse_params(obj)
+ try:
+ return reverse(view_name, args=args, kwargs=kwargs, urlconf=self)
+ except NoReverseMatch:
+ raise ViewCanNotProvideSubpath
+
+ def get_reverse_params(self, obj):
+ """This method should return a view_name, args, kwargs tuple suitable for reversing a url for the given obj using self as the urlconf."""
+ raise NotImplementedError("View subclasses must implement get_reverse_params to support subpaths.")
+
+ def attributes_with_node(self, node):
+ return QuerySetMapper(self.attribute_set, passthrough=node.attributes)
+
+ def render_to_response(self, request, extra_context=None):
+ if not hasattr(request, 'node'):
+ raise MIDDLEWARE_NOT_CONFIGURED
+
+ extra_context = extra_context or {}
+ view_about_to_render.send(sender=self, request=request, extra_context=extra_context)
+ response = self.actually_render_to_response(request, extra_context)
+ view_finished_rendering.send(sender=self, response=response)
+ return response
+
+ def actually_render_to_response(self, request, extra_context=None):
+ raise NotImplementedError('View subclasses must implement render_to_response.')
+
+ def get_navigation(self, node, max_depth):
+ """
+ Subclasses should implement get_navigation to support auto-generated navigation.
+ max_depth is the deepest `level` that should be generated; node is the node that
+ is asking for the navigation. This method should return a dictionary of the form:
+ {
+ 'url': url,
+ 'title': title,
+ 'order': order, # None for no ordering.
+ 'children': [ # Optional
+ <similar child navigation dictionaries>
+ ]
+ }
+ """
+ raise NotImplementedError('View subclasses must implement get_navigation.')
+
+ class Meta:
+ abstract = True
+
+
+_view_content_type_limiter.cls = View
+
+
+class MultiView(View):