Need to use unique function name

lib/galaxy/managers/taggable.py

@@ -96,7 +96,7 @@ class TaggableDeserializerMixin(object):
 
 class TaggableFilterMixin(object):
 
-    def create_expression(self, attr, op, val):
+    def create_tag_filter(self, attr, op, val):
         target_model = getattr(model, "%sTagAssociation" % self.model_class.__name__)
         id_column = "%s_id" % target_model.table.name.rsplit('_tag_association')[0]
         if ':' not in val and op == 'eq':
@@ -119,5 +119,5 @@ class TaggableFilterMixin(object):
 
     def _add_parsers(self):
         self.orm_filter_parsers.update({
-            'tag': self.create_expression
+            'tag': self.create_tag_filter
         })

lib/galaxy/managers/tools.py

@@ -95,7 +95,7 @@ class DynamicToolManager(ModelManager):
 
 class ToolFilterMixin(object):
 
-    def create_expression(self, attr, op, val):
+    def create_tool_filter(self, attr, op, val):
         if op == 'eq':
             cond = model.Job.table.c.tool_id == val
         elif op == 'contains':
@@ -110,5 +110,5 @@ class ToolFilterMixin(object):
 
     def _add_parsers(self):
         self.orm_filter_parsers.update({
-            'tool_id': self.create_expression,
+            'tool_id': self.create_tool_filter,
         })