Makes it nearly transparent - just pass remember=True to the login_userĬall. “Remember Me” functionality can be tricky to implement. Remembering or pre-filling the user’s username or password in a login form “Remember Me” prevents the user from accidentallyīeing logged out when they close their browser. anonymous_user = MyAnonymousUser Remember Me ¶īy default, when the user closes their browser the Flask Session is deletedĪnd the user is logged out. To have a permissions field), you can provide a callable (either a class orįactory function) that creates anonymous users to the LoginManager with: If you have custom requirements for anonymous users (for example, they need It has the following properties and methods: first () if user : return user # finally, return None if both methods did not login the user return None Anonymous Users ¶īy default, when a user is not actually logged in, current_user is set toĪn AnonymousUserMixin object. b64decode ( api_key ) except TypeError : pass user = User. replace ( 'Basic ', '', 1 ) try : api_key = base64. get ( 'Authorization' ) if api_key : api_key = api_key. first () if user : return user # next, try to login using Basic Auth api_key = request. get ( 'api_key' ) if api_key : user = User. request_loader def load_user_from_request ( request ): # first, try to login using the api_key url arg api_key = request. You can then access the logged-in user with theĬurrent_user proxy, which is available in every. Implementation of is_safe_url see this Flask Snippet. Your application will be vulnerable to open redirects. Warning: You MUST validate the value of the next parameter. render_template ( 'login.html', form = form ) if not is_safe_url ( next ): return flask. get ( 'next' ) # is_safe_url should check if the url is safe for redirects. flash ( 'Logged in successfully.' ) next = flask. # user should be an instance of your `User` class login_user ( user ) flask. validate_on_submit (): # Login and validate the user. For example, WTForms is a library that will # handle this for us, and we use a custom LoginForm to validate. route ( '/login', methods = ) def login (): # Here we use a class of some kind to represent and validate our # client-side form data. Once a user has authenticated, you log them in with the. (It’s not required, though.) Login Example ¶ Which provides default implementations for all of these properties and methods. To make implementing a user class easier, you can inherit from UserMixin, Note that this must be a str - if the ID is nativelyĪn int or some other type, you will need to convert it to str. This method must return a str that uniquely identifies this user,Īnd can be used to load the user from the user_loaderĬallback. Users should return False instead.) get_id() This property should return True if this is an anonymous user. Inactive accounts may not log in (without being forced of course). Suspended, or any condition your application has for rejecting an account. To being authenticated, they also have activated their account, not been This property should return True if this is an active user - in addition The criteria of login_required.) is_active This property should return True if the user is authenticated, i.e. The class that you use to represent users needs to implement these properties (In that case, the ID will manually be removed from the session and processing It should return None ( not raise an exception) if the ID is not valid. user_loader def load_user ( user_id ): return User.
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