Register database functions with the Flask app. This is called by the application factory.

Clear existing data and create new tables.

The Jinja environment used to load templates. The environment is created the first time this property is accessed. Changing :attr:`ji

The Jinja loader for this object's templates. By default this is a class :class:`jinja2.loaders.FileSystemLoader` to :attr:`template_f

Serialize ``obj`` to a JSON-formatted string. The serialization will be configured according to the config associated with this Envir

Patch pkgutil.get_loader to give loader without get_filename or archive. This provides for tests where a system has custom loaders, e.g. Google A

If a user id is stored in the session, load the user object from the database into ``g.user``.

Deserialize data as JSON from a string or bytes. :param s: Text or UTF-8 bytes. :param kwargs: Passed to :func:`json.loads`.

A standard Python :class:`~logging.Logger` for the app, with the same name as :attr:`name`. In debug mode, the logger's :attr:`~loggi

Log in a registered user by adding the user id to the session.

View decorator that redirects anonymous users to the login page.

Clear the current session, including the stored user id.

Sometimes it is necessary to set additional headers in a view. Because views do not have to return response objects but can return a value that

The maximum number of bytes that will be read during this request. If this limit is exceeded, a 413 :exc:`~werkzeug.exceptions.RequestEntityTo

Read-only view of the :data:`MAX_COOKIE_SIZE` config key. See :attr:`~werkzeug.wrappers.Response.max_cookie_size` in Werkzeug's docs.

The maximum size in bytes any non-file form field may be in a ``multipart/form-data`` body. If this limit is exceeded, a 413 :exc:`~we

The maximum number of fields that may be present in a ``multipart/form-data`` body. If this limit is exceeded, a 413 :exc:`~werkzeug.e

A temporary directory added to sys.path.

The name of the application. This is usually the import name with the difference that it's guessed from the run file if the import na

Open a resource file relative to the application's instance folder :attr:`instance_path`. Unlike :meth:`open_resource`, files in the i

Open a resource file relative to :attr:`root_path` for reading. The blueprint-relative equivalent of the app's :meth:`~.Flask.open_resource`

Shortcut for :meth:`route` with ``methods=["PATCH"]``. .. versionadded:: 2.0

This reflects the ``'_permanent'`` key in the dict.

Get and remove an attribute by name. Like :meth:`dict.pop`. :param name: Name of attribute to pop. :param default: Value to return if

Shortcut for :meth:`route` with ``methods=["POST"]``. .. versionadded:: 2.0

Register a new user. Validates that the username is not already taken. Hashes the password for security.

Render a template from the given source string with the given context. :param source: The source code of the template to render. :param c

Serialize the given arguments as JSON, and return a :class:`~flask.Response` object with it. The response mimetype will be "applicatio