• weberror.evalexception : 431, in respond

  app_iter = self.application(environ, detect_start_response)
  

• beaker.middleware : 73, in __call__

  return self.app(environ, start_response)
  

• beaker.middleware : 152, in __call__

  return self.wrap_app(environ, session_start_response)
  

• routes.middleware : 130, in __call__

  response = self.app(environ, start_response)
  

• pylons.wsgiapp : 125, in __call__

  response = self.dispatch(controller, environ, start_response)
  

• pylons.wsgiapp : 324, in dispatch

  return controller(environ, start_response)
  

• hervegis.lib.base : 18, in __call__

  return WSGIController.__call__(self, environ, start_response)
  

• pylons.controllers.core : 221, in __call__

  response = self._dispatch_call()
  

• pylons.controllers.core : 172, in _dispatch_call

  response = self._inspect_call(func)
  

• pylons.controllers.core : 107, in _inspect_call

  result = self._perform_call(func, args)
  

• pylons.controllers.core : 60, in _perform_call

  return func(**args)
  

• ? : 2, in test

  No operation context
  

• pylons.decorators : 36, in jsonify

  data = func(*args, **kwargs)
  

• hervegis.controllers.selector : 127, in test

  print equipement.installation.id_loc
  

• sqlalchemy.orm.attributes : 136, in __getattr__

  key)
  

AttributeError: Neither 'InstrumentedAttribute' object nor 'Comparator' object has an attribute 'id_loc'