python类AppRegistryNotReady()的实例源码

def set_installed_apps(self, installed):
        """
        Enables a different set of installed apps for get_app_config[s].

        installed must be an iterable in the same format as INSTALLED_APPS.

        set_installed_apps() must be balanced with unset_installed_apps(),
        even if it exits with an exception.

        Primarily used as a receiver of the setting_changed signal in tests.

        This method may trigger new imports, which may add new models to the
        registry of all imported models. They will stay in the registry even
        after unset_installed_apps(). Since it isn't possible to replay
        imports safely (eg. that could lead to registering listeners twice),
        models are registered when they're imported and never removed.
        """
        if not self.ready:
            raise AppRegistryNotReady("App registry isn't ready yet.")
        self.stored_app_configs.append(self.app_configs)
        self.app_configs = OrderedDict()
        self.apps_ready = self.models_ready = self.ready = False
        self.clear_cache()
        self.populate(installed)

def set_installed_apps(self, installed):
        """
        Enables a different set of installed apps for get_app_config[s].

        installed must be an iterable in the same format as INSTALLED_APPS.

        set_installed_apps() must be balanced with unset_installed_apps(),
        even if it exits with an exception.

        Primarily used as a receiver of the setting_changed signal in tests.

        This method may trigger new imports, which may add new models to the
        registry of all imported models. They will stay in the registry even
        after unset_installed_apps(). Since it isn't possible to replay
        imports safely (eg. that could lead to registering listeners twice),
        models are registered when they're imported and never removed.
        """
        if not self.ready:
            raise AppRegistryNotReady("App registry isn't ready yet.")
        self.stored_app_configs.append(self.app_configs)
        self.app_configs = OrderedDict()
        self.apps_ready = self.models_ready = self.ready = False
        self.clear_cache()
        self.populate(installed)

def set_installed_apps(self, installed):
        """
        Enables a different set of installed apps for get_app_config[s].

        installed must be an iterable in the same format as INSTALLED_APPS.

        set_installed_apps() must be balanced with unset_installed_apps(),
        even if it exits with an exception.

        Primarily used as a receiver of the setting_changed signal in tests.

        This method may trigger new imports, which may add new models to the
        registry of all imported models. They will stay in the registry even
        after unset_installed_apps(). Since it isn't possible to replay
        imports safely (eg. that could lead to registering listeners twice),
        models are registered when they're imported and never removed.
        """
        if not self.ready:
            raise AppRegistryNotReady("App registry isn't ready yet.")
        self.stored_app_configs.append(self.app_configs)
        self.app_configs = OrderedDict()
        self.apps_ready = self.models_ready = self.ready = False
        self.clear_cache()
        self.populate(installed)

def set_installed_apps(self, installed):
        """
        Enables a different set of installed apps for get_app_config[s].

        installed must be an iterable in the same format as INSTALLED_APPS.

        set_installed_apps() must be balanced with unset_installed_apps(),
        even if it exits with an exception.

        Primarily used as a receiver of the setting_changed signal in tests.

        This method may trigger new imports, which may add new models to the
        registry of all imported models. They will stay in the registry even
        after unset_installed_apps(). Since it isn't possible to replay
        imports safely (eg. that could lead to registering listeners twice),
        models are registered when they're imported and never removed.
        """
        if not self.ready:
            raise AppRegistryNotReady("App registry isn't ready yet.")
        self.stored_app_configs.append(self.app_configs)
        self.app_configs = OrderedDict()
        self.apps_ready = self.models_ready = self.ready = False
        self.clear_cache()
        self.populate(installed)

def set_installed_apps(self, installed):
        """
        Enables a different set of installed apps for get_app_config[s].

        installed must be an iterable in the same format as INSTALLED_APPS.

        set_installed_apps() must be balanced with unset_installed_apps(),
        even if it exits with an exception.

        Primarily used as a receiver of the setting_changed signal in tests.

        This method may trigger new imports, which may add new models to the
        registry of all imported models. They will stay in the registry even
        after unset_installed_apps(). Since it isn't possible to replay
        imports safely (eg. that could lead to registering listeners twice),
        models are registered when they're imported and never removed.
        """
        if not self.ready:
            raise AppRegistryNotReady("App registry isn't ready yet.")
        self.stored_app_configs.append(self.app_configs)
        self.app_configs = OrderedDict()
        self.apps_ready = self.models_ready = self.ready = False
        self.clear_cache()
        self.populate(installed)

def set_installed_apps(self, installed):
        """
        Enables a different set of installed apps for get_app_config[s].

        installed must be an iterable in the same format as INSTALLED_APPS.

        set_installed_apps() must be balanced with unset_installed_apps(),
        even if it exits with an exception.

        Primarily used as a receiver of the setting_changed signal in tests.

        This method may trigger new imports, which may add new models to the
        registry of all imported models. They will stay in the registry even
        after unset_installed_apps(). Since it isn't possible to replay
        imports safely (eg. that could lead to registering listeners twice),
        models are registered when they're imported and never removed.
        """
        if not self.ready:
            raise AppRegistryNotReady("App registry isn't ready yet.")
        self.stored_app_configs.append(self.app_configs)
        self.app_configs = OrderedDict()
        self.apps_ready = self.models_ready = self.ready = False
        self.clear_cache()
        self.populate(installed)

def check_apps_ready(self):
        """
        Raises an exception if all apps haven't been imported yet.
        """
        if not self.apps_ready:
            raise AppRegistryNotReady("Apps aren't loaded yet.")

def check_models_ready(self):
        """
        Raises an exception if all models haven't been imported yet.
        """
        if not self.models_ready:
            raise AppRegistryNotReady("Models aren't loaded yet.")

def check_models_ready(self):
        """
        Raises an exception if models haven't been imported yet.
        """
        if self.models is None:
            raise AppRegistryNotReady(
                "Models for app '%s' haven't been imported yet." % self.label)

def _add_installed_apps_translations(self):
        """Merges translations from each installed app."""
        try:
            app_configs = reversed(list(apps.get_app_configs()))
        except AppRegistryNotReady:
            raise AppRegistryNotReady(
                "The translation infrastructure cannot be initialized before the "
                "apps registry is ready. Check that you don't make non-lazy "
                "gettext calls at import time.")
        for app_config in app_configs:
            localedir = os.path.join(app_config.path, 'locale')
            translation = self._new_gnu_trans(localedir)
            self.merge(translation)

def check_apps_ready(self):
        """
        Raises an exception if all apps haven't been imported yet.
        """
        if not self.apps_ready:
            raise AppRegistryNotReady("Apps aren't loaded yet.")

def check_models_ready(self):
        """
        Raises an exception if all models haven't been imported yet.
        """
        if not self.models_ready:
            raise AppRegistryNotReady("Models aren't loaded yet.")

def check_models_ready(self):
        """
        Raises an exception if models haven't been imported yet.
        """
        if self.models is None:
            raise AppRegistryNotReady(
                "Models for app '%s' haven't been imported yet." % self.label)

def _add_installed_apps_translations(self):
        """Merges translations from each installed app."""
        try:
            app_configs = reversed(list(apps.get_app_configs()))
        except AppRegistryNotReady:
            raise AppRegistryNotReady(
                "The translation infrastructure cannot be initialized before the "
                "apps registry is ready. Check that you don't make non-lazy "
                "gettext calls at import time.")
        for app_config in app_configs:
            localedir = os.path.join(app_config.path, 'locale')
            translation = self._new_gnu_trans(localedir)
            self.merge(translation)

def get_model(app_label, model_name):
    """
    Fetches a Django model using the app registry.

    This doesn't require that an app with the given app label exists,
    which makes it safe to call when the registry is being populated.
    All other methods to access models might raise an exception about the
    registry not being ready yet.
    Raises LookupError if model isn't found.
    """
    try:
        return apps.get_model(app_label, model_name)
    except AppRegistryNotReady:
        if apps.apps_ready and not apps.models_ready:
            # If this function is called while `apps.populate()` is
            # loading models, ensure that the module that defines the
            # target model has been imported and try looking the model up
            # in the app registry. This effectively emulates
            # `from path.to.app.models import Model` where we use
            # `Model = get_model('app', 'Model')` instead.
            app_config = apps.get_app_config(app_label)
            # `app_config.import_models()` cannot be used here because it
            # would interfere with `apps.populate()`.
            import_module('%s.%s' % (app_config.name, MODELS_MODULE_NAME))
            # In order to account for case-insensitivity of model_name,
            # look up the model through a private API of the app registry.
            return apps.get_registered_model(app_label, model_name)
        else:
            # This must be a different case (e.g. the model really doesn't
            # exist). We just re-raise the exception.
            raise

def check_apps_ready(self):
        """
        Raises an exception if all apps haven't been imported yet.
        """
        if not self.apps_ready:
            raise AppRegistryNotReady("Apps aren't loaded yet.")

def check_models_ready(self):
        """
        Raises an exception if all models haven't been imported yet.
        """
        if not self.models_ready:
            raise AppRegistryNotReady("Models aren't loaded yet.")

def _add_installed_apps_translations(self):
        """Merges translations from each installed app."""
        try:
            app_configs = reversed(list(apps.get_app_configs()))
        except AppRegistryNotReady:
            raise AppRegistryNotReady(
                "The translation infrastructure cannot be initialized before the "
                "apps registry is ready. Check that you don't make non-lazy "
                "gettext calls at import time.")
        for app_config in app_configs:
            localedir = os.path.join(app_config.path, 'locale')
            if os.path.exists(localedir):
                translation = self._new_gnu_trans(localedir)
                self.merge(translation)

def check_apps_ready(self):
        """
        Raises an exception if all apps haven't been imported yet.
        """
        if not self.apps_ready:
            raise AppRegistryNotReady("Apps aren't loaded yet.")

def check_models_ready(self):
        """
        Raises an exception if all models haven't been imported yet.
        """
        if not self.models_ready:
            raise AppRegistryNotReady("Models aren't loaded yet.")

def check_models_ready(self):
        """
        Raises an exception if models haven't been imported yet.
        """
        if self.models is None:
            raise AppRegistryNotReady(
                "Models for app '%s' haven't been imported yet." % self.label)

def _add_installed_apps_translations(self):
        """Merges translations from each installed app."""
        try:
            app_configs = reversed(list(apps.get_app_configs()))
        except AppRegistryNotReady:
            raise AppRegistryNotReady(
                "The translation infrastructure cannot be initialized before the "
                "apps registry is ready. Check that you don't make non-lazy "
                "gettext calls at import time.")
        for app_config in app_configs:
            localedir = os.path.join(app_config.path, 'locale')
            translation = self._new_gnu_trans(localedir)
            self.merge(translation)

def check_apps_ready(self):
        """
        Raises an exception if all apps haven't been imported yet.
        """
        if not self.apps_ready:
            raise AppRegistryNotReady("Apps aren't loaded yet.")

def check_models_ready(self):
        """
        Raises an exception if all models haven't been imported yet.
        """
        if not self.models_ready:
            raise AppRegistryNotReady("Models aren't loaded yet.")

def check_models_ready(self):
        """
        Raises an exception if models haven't been imported yet.
        """
        if self.models is None:
            raise AppRegistryNotReady(
                "Models for app '%s' haven't been imported yet." % self.label)

def _add_installed_apps_translations(self):
        """Merges translations from each installed app."""
        try:
            app_configs = reversed(list(apps.get_app_configs()))
        except AppRegistryNotReady:
            raise AppRegistryNotReady(
                "The translation infrastructure cannot be initialized before the "
                "apps registry is ready. Check that you don't make non-lazy "
                "gettext calls at import time.")
        for app_config in app_configs:
            localedir = os.path.join(app_config.path, 'locale')
            translation = self._new_gnu_trans(localedir)
            self.merge(translation)

def check_apps_ready(self):
        """
        Raises an exception if all apps haven't been imported yet.
        """
        if not self.apps_ready:
            raise AppRegistryNotReady("Apps aren't loaded yet.")

def check_models_ready(self):
        """
        Raises an exception if all models haven't been imported yet.
        """
        if not self.models_ready:
            raise AppRegistryNotReady("Models aren't loaded yet.")

def check_models_ready(self):
        """
        Raises an exception if models haven't been imported yet.
        """
        if self.models is None:
            raise AppRegistryNotReady(
                "Models for app '%s' haven't been imported yet." % self.label)

def _add_installed_apps_translations(self):
        """Merges translations from each installed app."""
        try:
            app_configs = reversed(list(apps.get_app_configs()))
        except AppRegistryNotReady:
            raise AppRegistryNotReady(
                "The translation infrastructure cannot be initialized before the "
                "apps registry is ready. Check that you don't make non-lazy "
                "gettext calls at import time.")
        for app_config in app_configs:
            localedir = os.path.join(app_config.path, 'locale')
            translation = self._new_gnu_trans(localedir)
            self.merge(translation)