def autodiscover(module_name=None):
"""
Autodiscover INSTALLED_APPS perms.py modules and fail silently when not
present. This forces an import on them to register any permissions bits
they may want.
"""
from django.utils.module_loading import module_has_submodule
from permission.compat import import_module
from permission.conf import settings
module_name = module_name or settings.PERMISSION_AUTODISCOVER_MODULE_NAME
app_names = (app.name for app in apps.app_configs.values())
for app in app_names:
mod = import_module(app)
# Attempt to import the app's perms module
try:
# discover the permission module
discover(app, module_name=module_name)
except:
# Decide whether to bubble up this error. If the app just doesn't
# have an perms module, we can just ignore the error attempting
# to import it, otherwise we want it to bubble up.
if module_has_submodule(mod, module_name):
raise
def discover(app, module_name=None):
"""
Automatically apply the permission logics written in the specified
module.
Examples
--------
Assume if you have a ``perms.py`` in ``your_app`` as::
from permission.logics import AuthorPermissionLogic
PERMISSION_LOGICS = (
('your_app.your_model', AuthorPermissionLogic),
)
Use this method to apply the permission logics enumerated in
``PERMISSION_LOGICS`` variable like:
>>> discover('your_app')
"""
from permission.compat import import_module
from permission.compat import get_model
from permission.conf import settings
from permission.utils.logics import add_permission_logic
variable_name = settings.PERMISSION_AUTODISCOVER_VARIABLE_NAME
module_name = module_name or settings.PERMISSION_AUTODISCOVER_MODULE_NAME
# import the module
m = import_module('%s.%s' % (app, module_name))
# check if the module have PERMISSION_LOGICS variable
if hasattr(m, variable_name):
# apply permission logics automatically
permission_logic_set = getattr(m, variable_name)
for model, permission_logic in permission_logic_set:
if isinstance(model, six.string_types):
# convert model string to model instance
model = get_model(*model.split('.', 1))
add_permission_logic(model, permission_logic)
def discover(app, module_name=None):
"""
Automatically apply the permission logics written in the specified
module.
Examples
--------
Assume if you have a ``perms.py`` in ``your_app`` as::
from permission.logics import AuthorPermissionLogic
PERMISSION_LOGICS = (
('your_app.your_model', AuthorPermissionLogic),
)
Use this method to apply the permission logics enumerated in
``PERMISSION_LOGICS`` variable like:
>>> discover('your_app')
"""
from permission.compat import import_module
from permission.compat import get_model
from permission.conf import settings
from permission.utils.logics import add_permission_logic
variable_name = settings.PERMISSION_AUTODISCOVER_VARIABLE_NAME
module_name = module_name or settings.PERMISSION_AUTODISCOVER_MODULE_NAME
# import the module
m = import_module('%s.%s' % (app, module_name))
# check if the module have PERMISSION_LOGICS variable
if hasattr(m, variable_name):
# apply permission logics automatically
permission_logic_set = getattr(m, variable_name)
for model, permission_logic in permission_logic_set:
if isinstance(model, basestring):
# convert model string to model instance
model = get_model(*model.split('.', 1))
add_permission_logic(model, permission_logic)
