Add natural key to the Index model

apps/document_indexing/models.py

@@ -9,6 +9,7 @@ from mptt.fields import TreeForeignKey
 from documents.models import Document, DocumentType
 
 from .conf.settings import AVAILABLE_INDEXING_FUNCTIONS
+from .managers import IndexManager
 
 available_indexing_functions_string = (_(u'Available functions: %s') % u','.join([u'%s()' % name for name, function in AVAILABLE_INDEXING_FUNCTIONS.items()])) if AVAILABLE_INDEXING_FUNCTIONS else u''
 
@@ -19,6 +20,8 @@ class Index(models.Model):
     enabled = models.BooleanField(default=True, verbose_name=_(u'enabled'), help_text=_(u'Causes this index to be visible and updated when document data changes.'))
     document_types = models.ManyToManyField(DocumentType, verbose_name=_(u'document types'))
 
+    objects = IndexManager()
+
     @property
     def template_root(self):
         return self.indextemplatenode_set.get(parent=None)
@@ -47,6 +50,9 @@ class Index(models.Model):
     def get_document_types_names(self):
         return u', '.join([unicode(document_type) for document_type in self.document_types.all()] or [u'All'])
 
+    def natural_key(self):
+        return (self.name,)
+
     class Meta:
         verbose_name = _(u'index')
         verbose_name_plural = _(u'indexes')