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Source code for pyramid.registry

from zope.component.registry import Components

from pyramid.interfaces import ISettings

[docs]class Registry(Components, dict): """ A registry object is an :term:`application registry`. The existence of a registry implementation detail of :app:`pyramid`. It is used by the framework itself to perform mappings of URLs to view callables, as well as servicing other various duties. Despite being an implementation detail of the framework, it has a number of attributes that may be useful within application code. For information about the purpose and usage of the application registry, see :ref:`zca_chapter`. The application registry is usually accessed as ``request.registry`` in application code. """ # for optimization purposes, if no listeners are listening, don't try # to notify them has_listeners = False _settings = None def registerSubscriptionAdapter(self, *arg, **kw): result = Components.registerSubscriptionAdapter(self, *arg, **kw) self.has_listeners = True return result def registerHandler(self, *arg, **kw): result = Components.registerHandler(self, *arg, **kw) self.has_listeners = True return result def notify(self, *events): if self.has_listeners: # iterating over subscribers assures they get executed [ _ for _ in self.subscribers(events, None) ] # backwards compatibility for code that wants to look up a settings # object via ``registry.getUtility(ISettings)`` def _get_settings(self): return self._settings def _set_settings(self, settings): self.registerUtility(settings, ISettings) self._settings = settings settings = property(_get_settings, _set_settings)
global_registry = Registry('global')