Code layout change.

[wolnelektury.git] / apps / newtagging / managers.py

diff --git a/apps/newtagging/managers.py b/apps/newtagging/managers.py
deleted file mode 100644 (file)
index 0bfec54..0000000
--- a/apps/newtagging/managers.py
+++ /dev/null
@@ -1,81 +0,0 @@
-# -*- coding: utf-8 -*-
-"""
-Custom managers for Django models registered with the tagging
-application.
-"""
-from django.contrib.contenttypes.models import ContentType
-from django.db import models
-
-
-class ModelTagManager(models.Manager):
-    """
-    A manager for retrieving tags for a particular model.
-    """
-    def __init__(self, tag_model):
-        super(ModelTagManager, self).__init__()
-        self.tag_model = tag_model
-
-    def get_queryset(self):
-        content_type = ContentType.objects.get_for_model(self.model)
-        return self.tag_model.objects.filter(
-            items__content_type__pk=content_type.pk).distinct()
-
-    def related(self, tags, *args, **kwargs):
-        return self.tag_model.objects.related_for_model(tags, self.model, *args, **kwargs)
-
-    def usage(self, *args, **kwargs):
-        return self.tag_model.objects.usage_for_model(self.model, *args, **kwargs)
-
-
-class ModelTaggedItemManager(models.Manager):
-    """
-    A manager for retrieving model instances based on their tags.
-    """
-    def __init__(self, tag_model):
-        super(ModelTaggedItemManager, self).__init__()
-        self.intermediary_table_model = tag_model.objects.intermediary_table_model
-
-    def related_to(self, obj, queryset=None):
-        if queryset is None:
-            return self.intermediary_table_model.objects.get_related(
-                obj, self.model)
-        else:
-            return self.intermediary_table_model.objects.get_related(
-                obj, queryset)
-
-    def with_all(self, tags, queryset=None):
-        if queryset is None:
-            return self.intermediary_table_model.objects.get_by_model(self.model, tags)
-        else:
-            return self.intermediary_table_model.objects.get_by_model(queryset, tags)
-
-    def with_any(self, tags, queryset=None):
-        if queryset is None:
-            return self.intermediary_table_model.objects.get_union_by_model(self.model, tags)
-        else:
-            return self.intermediary_table_model.objects.get_union_by_model(queryset, tags)
-
-
-class TagDescriptor(object):
-    """
-    A descriptor which provides access to a ``ModelTagManager`` for
-    model classes and simple retrieval, updating and deletion of tags
-    for model instances.
-    """
-    def __init__(self, tag_model):
-        self.tag_model = tag_model
-
-    def __get__(self, instance, owner):
-        if not instance:
-            tag_manager = ModelTagManager(self.tag_model)
-            tag_manager.model = owner
-            return tag_manager
-        else:
-            return self.tag_model.objects.get_for_object(instance)
-
-    def __set__(self, instance, value):
-        self.tag_model.objects.update_tags(instance, value)
-
-    def __del__(self, instance):
-        self.tag_model.objects.update_tags(instance, [])
-