Moved Tag, and the Titled abstract model, from penfield into philo proper. Added...

[philo.git] / models / base.py

diff --git a/models/base.py b/models/base.py
index 5ca9d93..3482a1a 100644 (file)
--- a/models/base.py
+++ b/models/base.py
@@ -3,15 +3,27 @@ from django.contrib.contenttypes.models import ContentType
 from django.contrib.contenttypes import generic
 from django.utils import simplejson as json
 from django.core.exceptions import ObjectDoesNotExist
 from django.contrib.contenttypes import generic
 from django.utils import simplejson as json
 from django.core.exceptions import ObjectDoesNotExist

+from philo.utils import ContentTypeRegistryLimiter

 from UserDict import DictMixin
 
 
 from UserDict import DictMixin
 
 

-def register_value_model(model):
-       pass
+class Tag(models.Model):
+       name = models.CharField(max_length=250)
+       slug = models.SlugField()
+       
+       def __unicode__(self):
+               return self.name

 
 
 
 

-def unregister_value_model(model):
-       pass
+class Titled(models.Model):
+       title = models.CharField(max_length=255)
+       slug = models.SlugField()
+       
+       def __unicode__(self):
+               return self.title
+       
+       class Meta:
+               abstract = True

 
 
 class Attribute(models.Model):
 
 
 class Attribute(models.Model):


@@ -39,12 +51,24 @@ class Attribute(models.Model):
                app_label = 'philo'
 
 
                app_label = 'philo'
 
 

+value_content_type_limiter = ContentTypeRegistryLimiter()
+
+
+def register_value_model(model):
+       value_content_type_limiter.register_class(model)
+
+
+def unregister_value_model(model):
+       value_content_type_limiter.unregister_class(model)
+
+
+

 class Relationship(models.Model):
        entity_content_type = models.ForeignKey(ContentType, related_name='relationship_entity_set', verbose_name='Entity type')
        entity_object_id = models.PositiveIntegerField(verbose_name='Entity ID')
        entity = generic.GenericForeignKey('entity_content_type', 'entity_object_id')
        key = models.CharField(max_length=255)
 class Relationship(models.Model):
        entity_content_type = models.ForeignKey(ContentType, related_name='relationship_entity_set', verbose_name='Entity type')
        entity_object_id = models.PositiveIntegerField(verbose_name='Entity ID')
        entity = generic.GenericForeignKey('entity_content_type', 'entity_object_id')
        key = models.CharField(max_length=255)

-       value_content_type = models.ForeignKey(ContentType, related_name='relationship_value_set', verbose_name='Value type')
+       value_content_type = models.ForeignKey(ContentType, related_name='relationship_value_set', limit_choices_to=value_content_type_limiter, verbose_name='Value type')

        value_object_id = models.PositiveIntegerField(verbose_name='Value ID')
        value = generic.GenericForeignKey('value_content_type', 'value_object_id')
        
        value_object_id = models.PositiveIntegerField(verbose_name='Value ID')
        value = generic.GenericForeignKey('value_content_type', 'value_object_id')
        


@@ -59,17 +83,19 @@ class QuerySetMapper(object, DictMixin):
        def __init__(self, queryset, passthrough=None):
                self.queryset = queryset
                self.passthrough = passthrough
        def __init__(self, queryset, passthrough=None):
                self.queryset = queryset
                self.passthrough = passthrough

+       

        def __getitem__(self, key):
                try:
                        return self.queryset.get(key__exact=key).value
                except ObjectDoesNotExist:
        def __getitem__(self, key):
                try:
                        return self.queryset.get(key__exact=key).value
                except ObjectDoesNotExist:

-                       if self.passthrough:
+                       if self.passthrough is not None:

                                return self.passthrough.__getitem__(key)
                        raise KeyError
                                return self.passthrough.__getitem__(key)
                        raise KeyError

+       

        def keys(self):
                keys = set(self.queryset.values_list('key', flat=True).distinct())
        def keys(self):
                keys = set(self.queryset.values_list('key', flat=True).distinct())

-               if self.passthrough:
-                       keys += set(self.passthrough.keys())
+               if self.passthrough is not None:
+                       keys |= set(self.passthrough.keys())

                return list(keys)
 
 
                return list(keys)
 
 


@@ -144,6 +170,7 @@ class TreeModel(models.Model):
                return self.path
        
        class Meta:
                return self.path
        
        class Meta:

+               unique_together = (('parent', 'slug'),)

                abstract = True
                app_label = 'philo'
 
                abstract = True
                app_label = 'philo'
 


@@ -161,47 +188,6 @@ class TreeEntity(TreeModel, Entity):
                        return QuerySetMapper(self.relationship_set, passthrough=self.parent.relationships)
                return super(TreeEntity, self).relationships
        
                        return QuerySetMapper(self.relationship_set, passthrough=self.parent.relationships)
                return super(TreeEntity, self).relationships
        

-       class Meta:
-               abstract = True
-               app_label = 'philo'
-
-
-class InheritableTreeEntity(TreeEntity):
-       instance_type = models.ForeignKey(ContentType, editable=False)
-       
-       def save(self, force_insert=False, force_update=False):
-               if not hasattr(self, 'instance_type_ptr'):
-                       self.instance_type = ContentType.objects.get_for_model(self.__class__)
-               super(InheritableTreeEntity, self).save(force_insert, force_update)
-       
-       @property
-       def instance(self):
-               try:
-                       return self.instance_type.get_object_for_this_type(id=self.id)
-               except:
-                       return None
-       
-       def get_path(self, pathsep='/', field='slug'):
-               path = getattr(self.instance, field, getattr(self.instance, 'slug', '?'))
-               parent = self.parent
-               while parent:
-                       path = getattr(parent.instance, field, getattr(parent.instance, 'slug', '?')) + pathsep + path
-                       parent = parent.parent
-               return path
-       path = property(get_path)
-       
-       @property
-       def attributes(self):
-               if self.parent:
-                       return QuerySetMapper(self.instance.attribute_set, passthrough=self.parent.instance.attributes)
-               return QuerySetMapper(self.instance.attribute_set)
-
-       @property
-       def relationships(self):
-               if self.parent:
-                       return QuerySetMapper(self.instance.relationship_set, passthrough=self.parent.instance.relationships)
-               return QuerySetMapper(self.instance.relationship_set)
-       

        class Meta:
                abstract = True
                app_label = 'philo'
\ No newline at end of file
        class Meta:
                abstract = True
                app_label = 'philo'
\ No newline at end of file