events: Add a method to model base class for sending events.

This wraps the logic to send pyramid events at a single place.

rhodecode/model/__init__.py

@@ -43,6 +43,7 The application's model objects
 import logging
 
 from pylons import config
+from pyramid.threadlocal import get_current_registry
 
 from rhodecode.model import meta, db
 from rhodecode.lib.utils2 import obfuscate_url_pw
@@ -144,6 +145,17 class BaseModel(object):
         return self._get_instance(
             db.Permission, permission, callback=db.Permission.get_by_key)
 
+    def send_event(self, event):
+        """
+        Helper method to send an event. This wraps the pyramid logic to send an
+        event.
+        """
+        # For the first step we are using pyramids thread locals here. If the
+        # event mechanism works out as a good solution we should think about
+        # passing the registry into the constructor to get rid of it.
+        registry = get_current_registry()
+        registry.notify(event)
+
     @classmethod
     def get_all(cls):
         """