def getApplication():
"""Return the nearest enclosing :class:`grokcore.site.Application`.
Raises :exc:`ValueError` if no application can be found.
"""
site = getSite()
if IApplication.providedBy(site):
return site
# Another sub-site is within the application. Walk up the object
# tree until we get to the an application.
obj = site
while obj is not None:
if IApplication.providedBy(obj):
return obj
obj = obj.__parent__
raise ValueError("No application found.")
def create_application(factory, container, name):
"""Creates an application and triggers the events from
the application lifecycle.
"""
# Check the factory.
assert IApplication.implementedBy(factory)
# Check the availability of the name in the container.
if name in container:
raise KeyError(name)
# Instanciate the application
application = factory()
# Trigger the creation event.
notify(ObjectCreatedEvent(application))
# Persist the application.
# This may raise a KeyError.
container[name] = application
# Trigger the initialization event.
notify(ApplicationInitializedEvent(application))
return application
def create_application(factory, container, name):
"""Creates an application and triggers the events from
the application lifecycle.
"""
# Check the factory.
if not IApplication.implementedBy(factory):
raise WrongType(factory)
# Check the availability of the name in the container.
if name in container:
raise KeyError(name)
# Instanciate the application
application = factory()
# Trigger the creation event.
notify(ObjectCreatedEvent(application))
# Persist the application.
# This may raise a KeyError.
container[name] = application
# Trigger the initialization event with the new application as a
# current site.
current = getSite()
setSite(application)
try:
notify(ApplicationAddedEvent(application))
finally:
setSite(current)
return application
