Updated object deletion to match django 1.3's handling and thus multiple dbs.

[philo.git] / contrib / shipherd / models.py

diff --git a/contrib/shipherd/models.py b/contrib/shipherd/models.py
index 5146987..654f5f8 100644 (file)
--- a/contrib/shipherd/models.py
+++ b/contrib/shipherd/models.py
@@ -4,7 +4,7 @@ from django.core.urlresolvers import NoReverseMatch
 from django.core.validators import RegexValidator, MinValueValidator
 from django.db import models
 from django.forms.models import model_to_dict
-from philo.models import TreeEntity, JSONField, Node, TreeManager, Entity
+from philo.models import TreeEntity, Node, TreeManager, Entity, TargetURLModel
 from philo.validators import RedirectValidator
 from UserDict import DictMixin
 
@@ -148,18 +148,19 @@ class NavigationManager(models.Manager):
                # about that. TODO: Benchmark it.
                caches = self.__class__._cache[self.db][node].values()
                
-               items = []
+               target_pks = set()
                
                for cache in caches:
-                       items += cache['items']
+                       target_pks |= set([item.target_node_id for item in cache['items']])
                
                # A distinct query is not strictly necessary. TODO: benchmark the efficiency
                # with/without distinct.
-               targets = list(Node.objects.filter(navigation_items__in=cache['items']).distinct())
+               targets = list(Node.objects.filter(pk__in=target_pks).distinct())
                
                for cache in caches:
                        for item in cache['items']:
-                               item.target_node = targets[targets.index(item.target_node)]
+                               if item.target_node_id:
+                                       item.target_node = targets[targets.index(item.target_node)]
        
        def clear_cache(self):
                self.__class__._cache.pop(self.db, None)
@@ -169,7 +170,7 @@ class Navigation(Entity):
        objects = NavigationManager()
        
        node = models.ForeignKey(Node, related_name='navigation_set', help_text="Be available as navigation for this node.")
-       key = models.CharField(max_length=255, validators=[RegexValidator("\w+")], help_text="Must contain one or more alphanumeric characters or underscores.")
+       key = models.CharField(max_length=255, validators=[RegexValidator("\w+")], help_text="Must contain one or more alphanumeric characters or underscores.", db_index=True)
        depth = models.PositiveSmallIntegerField(default=DEFAULT_NAVIGATION_DEPTH, validators=[MinValueValidator(1)], help_text="Defines the maximum display depth of this navigation.")
        
        def __init__(self, *args, **kwargs):
@@ -204,16 +205,12 @@ class NavigationItemManager(TreeManager):
                return NavigationCacheQuerySet(self.model, using=self._db)
 
 
-class NavigationItem(TreeEntity):
+class NavigationItem(TreeEntity, TargetURLModel):
        objects = NavigationItemManager()
        
        navigation = models.ForeignKey(Navigation, blank=True, null=True, related_name='roots', help_text="Be a root in this navigation tree.")
        text = models.CharField(max_length=50)
        
-       target_node = models.ForeignKey(Node, blank=True, null=True, related_name='navigation_items', help_text="Point to this node's url.")
-       url_or_subpath = models.CharField(max_length=200, validators=[RedirectValidator()], blank=True, help_text="Point to this url or, if a node is defined and accepts subpaths, this subpath of the node.")
-       reversing_parameters = JSONField(blank=True, help_text="If reversing parameters are defined, url_or_subpath will instead be interpreted as the view name to be reversed.")
-       
        order = models.PositiveSmallIntegerField(default=0)
        
        def __init__(self, *args, **kwargs):
@@ -225,41 +222,10 @@ class NavigationItem(TreeEntity):
                return self.get_path(field='text', pathsep=u' › ')
        
        def clean(self):
-               # Should this be enforced? Not enforcing it would allow creation of "headers" in the navbar.
-               if not self.target_node and not self.url_or_subpath:
-                       raise ValidationError("Either a target node or a url must be defined.")
-               
-               if self.reversing_parameters and (not self.url_or_subpath or not self.target_node):
-                       raise ValidationError("Reversing parameters require a view name and a target node.")
-               
-               try:
-                       self.get_target_url()
-               except NoReverseMatch, e:
-                       raise ValidationError(e.message)
-               
+               super(NavigationItem, self).clean()
                if bool(self.parent) == bool(self.navigation):
                        raise ValidationError("Exactly one of `parent` and `navigation` must be defined.")
        
-       def get_target_url(self):
-               node = self.target_node
-               if node is not None and node.accepts_subpath and self.url_or_subpath:
-                       if self.reversing_parameters is not None:
-                               view_name = self.url_or_subpath
-                               params = self.reversing_parameters
-                               args = isinstance(params, list) and params or None
-                               kwargs = isinstance(params, dict) and params or None
-                               return node.view.reverse(view_name, args=args, kwargs=kwargs, node=node)
-                       else:
-                               subpath = self.url_or_subpath
-                               while subpath and subpath[0] == '/':
-                                       subpath = subpath[1:]
-                               return '%s%s' % (node.get_absolute_url(), subpath)
-               elif node is not None:
-                       return node.get_absolute_url()
-               else:
-                       return self.url_or_subpath
-       target_url = property(get_target_url)
-       
        def is_active(self, request):
                if self.target_url == request.path:
                        # Handle the `default` case where the target_url and requested path