Add function to get common item

exa/exa/helpers/mixins.py

@@ -5,3 +5,7 @@ class QueryMixin:
         if self.condition:
             print(self.condition)
             self.query += ' or {}'.format(self.condition)
+
+    def get_common_items(self, company):
+        return {'region_id': company.region_id, 'type_id': company.type_id,
+                'media_id': company.media_id, 'company_id': company.id}