from django.contrib.contenttypes import generic
from django.contrib.sites.models import Site
from django.http import HttpResponse, HttpResponseServerError, HttpResponseRedirect
+from django.core.exceptions import ViewDoesNotExist
from django.core.servers.basehttp import FileWrapper
-from django.core.urlresolvers import resolve, clear_url_caches
+from django.core.urlresolvers import resolve, clear_url_caches, reverse, NoReverseMatch
from django.template import add_to_builtins as register_templatetags
from inspect import getargspec
from philo.exceptions import MIDDLEWARE_NOT_CONFIGURED
from philo.models.base import TreeEntity, Entity, QuerySetMapper, register_value_model
+from philo.models.fields import JSONField
from philo.utils import ContentTypeSubclassLimiter
from philo.validators import RedirectValidator
-from philo.exceptions import ViewDoesNotProvideSubpaths, AncestorDoesNotExist
+from philo.exceptions import ViewCanNotProvideSubpath, ViewDoesNotProvideSubpaths, AncestorDoesNotExist
from philo.signals import view_about_to_render, view_finished_rendering
+from mptt.templatetags.mptt_tags import cache_tree_children
_view_content_type_limiter = ContentTypeSubclassLimiter(None)
+DEFAULT_NAVIGATION_DEPTH = 3
class Node(TreeEntity):
return self.view.render_to_response(request, extra_context)
def get_absolute_url(self):
- root = Site.objects.get_current().root_node
try:
- return '/%s' % self.get_path(root=root)
- except AncestorDoesNotExist:
+ root = Site.objects.get_current().root_node
+ except Site.DoesNotExist:
+ root = None
+
+ try:
+ path = self.get_path(root=root)
+ if path:
+ path += '/'
+ root_url = reverse('philo-root')
+ return '%s%s' % (root_url, path)
+ except AncestorDoesNotExist, ViewDoesNotExist:
return None
+ def get_navigation(self, depth=DEFAULT_NAVIGATION_DEPTH):
+ max_depth = depth + self.get_level()
+ tree = cache_tree_children(self.get_descendants(include_self=True).filter(level__lte=max_depth))
+
+ def get_nav(parent, nodes):
+ node_overrides = dict([(override.child.pk, override) for override in NodeNavigationOverride.objects.filter(parent=parent, child__in=nodes).select_related('child')])
+
+ navigation_list = []
+ for node in nodes:
+ node._override = node_overrides.get(node.pk, None)
+
+ if node._override:
+ if node._override.hide:
+ continue
+ navigation = node._override.get_navigation(node, max_depth)
+ else:
+ navigation = node.view.get_navigation(node, max_depth)
+
+ if not node.is_leaf_node() and node.get_level() < max_depth:
+ children = navigation.get('children', [])
+ children += get_nav(node, node.get_children())
+ navigation['children'] = children
+
+ if 'children' in navigation:
+ navigation['children'].sort(cmp=lambda x,y: cmp(x['order'], y['order']))
+
+ navigation_list.append(navigation)
+
+ return navigation_list
+
+ navigation = get_nav(self.parent, tree)
+ root = navigation[0]
+ navigation = [root] + root['children']
+ del(root['children'])
+ return navigation
+
+ def save(self):
+ super(Node, self).save()
+
+
class Meta:
app_label = 'philo'
models.ForeignKey(Node, related_name='sites', null=True, blank=True).contribute_to_class(Site, 'root_node')
+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):
- raise ViewDoesNotProvideSubpaths
+ 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 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
class MultiView(View):
accepts_subpath = True
- urlpatterns = []
+ @property
+ def urlpatterns(self, obj):
+ raise NotImplementedError("MultiView subclasses must implement urlpatterns.")
def actually_render_to_response(self, request, extra_context=None):
clear_url_caches()