Question 369490 in Javascript Question posted in
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Javascript – Is there any frontend send request code example when the backend API use @login_required from Flask-Login?

I want to implement frontend to send logout request to the flask backend below,

from flask_login import login_required, logout_user

@app.route('/auth/logout', methods=['POST'])
@login_required
def logout():
    logout_user()
    return "success", 200

I only know I should include the credential information inside the POST data.

However, even I read through the document:
https://flask-login.readthedocs.io/en/latest/
and google on the internet, I didn’t find a working example of frontend code that works with this kind of backend API

Is there anyone who can provide a simple frontend code example to call this backend api with credential included, thanks!

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2

Answers


  1. Chosen as BEST ANSWER
    0

    Just to start further discussion on this issue. I found several code example

    Logout request from Javascript to Flask

    https://stackoverflow.com/a/77105026/15233792

    https://github.com/pallets-eco/flask-security/issues/684#issuecomment-334174094


  2. 0

    No credential information is needed, you will not be making a post request. Login system works with cookies. Meaning when you delete the cookie from the browser, you are logged out.

    Therefore it’s trivial to logout by visiting a link in the html. And then flask-login will delete the user from the session, logging you out.

    from flask_login import login_required, logout_user

@app.route("/auth/logout")
@login_required
def logout():
    logout_user()
    return redirect(url_for(<your_homepage>))

    You simply need to put the following link to your navbar or on the profile section etc..

    ...
<a href="url_for('logout')">Logout</a>
...
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