django-rest-framework/djangorestframework/__init__.py
2011-07-22 12:00:58 +01:00

67 lines
2.3 KiB
Python

__version__ = '0.2.3'
VERSION = __version__ # synonym
from djangorestframework.builtins import DjangoRestFrameworkSite
from django.utils.importlib import import_module
import imp
__all__ = ('autodiscover','site', '__version__', 'VERSION')
api = DjangoRestFrameworkSite()
# A flag to tell us if autodiscover is running. autodiscover will set this to
# True while running, and False when it finishes.
LOADING = False
def autodiscover():
"""
Auto-discover INSTALLED_APPS api.py modules and fail silently when
not present. This forces an import on them to register any api bits they
may want.
"""
# Bail out if autodiscover didn't finish loading from a previous call so
# that we avoid running autodiscover again when the URLconf is loaded by
# the exception handler to resolve the handler500 view. This prevents an
# admin.py module with errors from re-registering models and raising a
# spurious AlreadyRegistered exception.
global LOADING
if LOADING:
return
LOADING = True
from django.conf import settings
for app in settings.INSTALLED_APPS:
# For each app, we need to look for a api.py inside that
# app's package. We can't use os.path here -- recall that modules may be
# imported different ways (think zip files) -- so we need to get
# the app's __path__ and look for api.py on that path.
# Step 1: find out the app's __path__ Import errors here will (and
# should) bubble up, but a missing __path__ (which is legal, but weird)
# fails silently -- apps that do weird things with __path__ might
# need to roll their own api registration.
try:
app_path = import_module(app).__path__
except (AttributeError, ImportError):
continue
# Step 2: use imp.find_module to find the app's gargoyle_conditions.py.
# For some # reason imp.find_module raises ImportError if the app can't
# be found # but doesn't actually try to import the module. So skip this
# app if its gargoyle.py doesn't exist
try:
imp.find_module('api', app_path)
except ImportError:
continue
import_module("%s.api" % app)
print 'aaaaaaaaaaaaa',app
# autodiscover was successful, reset loading flag.
LOADING = False