adding product.Type to AttributeType membership object

product/migrations/0002_auto__add_atrributetypemembership.py

@@ -0,0 +1,71 @@
+# encoding: utf-8
+import datetime
+from south.db import db
+from south.v2 import SchemaMigration
+from django.db import models
+
+class Migration(SchemaMigration):
+    
+    def forwards(self, orm):
+        
+        # Adding model 'AtrributeTypeMembership'
+        db.create_table('product_atrributetypemembership', (
+            ('attribute_Type', self.gf('django.db.models.fields.related.ForeignKey')(to=orm['product.AttributeType'])),
+            ('type', self.gf('django.db.models.fields.related.ForeignKey')(to=orm['product.Type'])),
+            ('id', self.gf('django.db.models.fields.AutoField')(primary_key=True)),
+            ('relation_type', self.gf('django.db.models.fields.CharField')(default='optional', max_length=16)),
+        ))
+        db.send_create_signal('product', ['AtrributeTypeMembership'])
+    
+    
+    def backwards(self, orm):
+        
+        # Deleting model 'AtrributeTypeMembership'
+        db.delete_table('product_atrributetypemembership')
+    
+    
+    models = {
+        'product.atrributetypemembership': {
+            'Meta': {'object_name': 'AtrributeTypeMembership'},
+            'attribute_Type': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['product.AttributeType']"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'relation_type': ('django.db.models.fields.CharField', [], {'default': "'optional'", 'max_length': '16'}),
+            'type': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['product.Type']"})
+        },
+        'product.attribute': {
+            'Meta': {'object_name': 'Attribute'},
+            'attribute_type': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['product.AttributeType']"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'product': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['product.Item']"}),
+            'value': ('django.db.models.fields.CharField', [], {'max_length': '256'})
+        },
+        'product.attributetype': {
+            'Meta': {'object_name': 'AttributeType'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '128'})
+        },
+        'product.item': {
+            'Meta': {'object_name': 'Item'},
+            'date_available': ('django.db.models.fields.DateField', [], {}),
+            'date_created': ('django.db.models.fields.DateTimeField', [], {}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '128'}),
+            'partner_id': ('django.db.models.fields.CharField', [], {'max_length': '32'}),
+            'type': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['product.Type']"})
+        },
+        'product.stockrecord': {
+            'Meta': {'object_name': 'StockRecord'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'price_excl_tax': ('django.db.models.fields.FloatField', [], {}),
+            'product': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['product.Item']"}),
+            'tax': ('django.db.models.fields.FloatField', [], {})
+        },
+        'product.type': {
+            'Meta': {'object_name': 'Type'},
+            'attribute_types': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['product.AttributeType']", 'symmetrical': 'False'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '128'})
+        }
+    }
+    
+    complete_apps = ['product']

product/migrations/0003_auto.py

@@ -0,0 +1,70 @@
+# encoding: utf-8
+import datetime
+from south.db import db
+from south.v2 import SchemaMigration
+from django.db import models
+
+class Migration(SchemaMigration):
+    
+    def forwards(self, orm):
+        
+        # Removing M2M table for field attribute_types on 'Type'
+        db.delete_table('product_type_attribute_types')
+    
+    
+    def backwards(self, orm):
+        
+        # Adding M2M table for field attribute_types on 'Type'
+        db.create_table('product_type_attribute_types', (
+            ('id', models.AutoField(verbose_name='ID', primary_key=True, auto_created=True)),
+            ('type', models.ForeignKey(orm['product.type'], null=False)),
+            ('attributetype', models.ForeignKey(orm['product.attributetype'], null=False))
+        ))
+        db.create_unique('product_type_attribute_types', ['type_id', 'attributetype_id'])
+    
+    
+    models = {
+        'product.atrributetypemembership': {
+            'Meta': {'object_name': 'AtrributeTypeMembership'},
+            'attribute_Type': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['product.AttributeType']"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'relation_type': ('django.db.models.fields.CharField', [], {'default': "'optional'", 'max_length': '16'}),
+            'type': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['product.Type']"})
+        },
+        'product.attribute': {
+            'Meta': {'object_name': 'Attribute'},
+            'attribute_type': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['product.AttributeType']"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'product': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['product.Item']"}),
+            'value': ('django.db.models.fields.CharField', [], {'max_length': '256'})
+        },
+        'product.attributetype': {
+            'Meta': {'object_name': 'AttributeType'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '128'})
+        },
+        'product.item': {
+            'Meta': {'object_name': 'Item'},
+            'date_available': ('django.db.models.fields.DateField', [], {}),
+            'date_created': ('django.db.models.fields.DateTimeField', [], {}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '128'}),
+            'partner_id': ('django.db.models.fields.CharField', [], {'max_length': '32'}),
+            'type': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['product.Type']"})
+        },
+        'product.stockrecord': {
+            'Meta': {'object_name': 'StockRecord'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'price_excl_tax': ('django.db.models.fields.FloatField', [], {}),
+            'product': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['product.Item']"}),
+            'tax': ('django.db.models.fields.FloatField', [], {})
+        },
+        'product.type': {
+            'Meta': {'object_name': 'Type'},
+            'attribute_types': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['product.AttributeType']", 'through': "orm['product.AtrributeTypeMembership']", 'symmetrical': 'False'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '128'})
+        }
+    }
+    
+    complete_apps = ['product']

product/models.py

@@ -1,7 +1,7 @@
 from django.db import models
 
 class AttributeType(models.Model):
-    """Defines a product atrribute type"""
+    """Defines a product attribute type"""
     name = models.CharField(max_length = 128)
 
     def __unicode__(self):
@@ -11,11 +11,21 @@ class AttributeType(models.Model):
 class Type(models.Model):
     """Defines a product type"""
     name = models.CharField(max_length = 128)
-    attribute_types = models.ManyToManyField('product.AttributeType')
+    attribute_types = models.ManyToManyField('product.AttributeType', through = 'product.AtrributeTypeMembership')
 
     def __unicode__(self):
         return self.name
 
+class AtrributeTypeMembership(models.Model):
+    RELATIONSHIP_CHOICES = (
+        ('optional', 'optional'),
+        ('required', 'required'),
+    )
+    type = models.ForeignKey('product.Type')
+    attribute_Type = models.ForeignKey('product.AttributeType')
+    relation_type = models.CharField(max_length = 16, choices = RELATIONSHIP_CHOICES, default = 'optional')
+    
+
 class Item(models.Model):
     """The base product object"""
     name = models.CharField(max_length = 128)