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 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):
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')
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
return '/%s/%s/' % (node.get_absolute_url().strip('/'), subpath.strip('/'))
return subpath
+ def get_context(self):
+ """Hook for providing instance-specific context - such as the value of a Field - to all views."""
+ return {}
+
+ def basic_view(self, view_name):
+ """
+ Wraps a field name and returns a simple view function that will render that view
+ with a basic context. This assumes that the field name is a ForeignKey to a
+ model with a render_to_response method.
+ """
+ field = self._meta.get_field(view_name)
+ view = getattr(self, field.name, None)
+
+ def inner(request, extra_context=None, **kwargs):
+ if not view:
+ raise Http404
+ context = self.get_context()
+ context.update(extra_context or {})
+ return view.render_to_response(request, extra_context=context)
+
+ return inner
+
class Meta:
abstract = True
git.ithinksw.org / philo.git / blobdiff