Why do the routes "/login" and "/register" not work?-CodePudding

My Flask application is not recognizing/using the two defined routes in auth.py, how come?

File structure

Error Msg: Not Found: The requested URL was not found on the server. If you entered the URL manually please check your spelling and try again.

Routes

http://127.0.0.1:5000/home (WORKS)
http://127.0.0.1:5000/profile (WORKS)
http://127.0.0.1:5000/login (DOES NOT WORK)
http://127.0.0.1:5000/register (DOES NOT WORK)

app.py

from flask import Flask, render_template

app = Flask(__name__)

@app.route("/home")
def home():
    return render_template("index.html")

@app.route("/profile")
def profile():
    return render_template("profile.html")

auth.py

from flask import current_app as app, render_template

@app.route("/login")
def login():
    return render_template("login.html")

@app.route("/register")
def register():
    return render_template("register.html")

CodePudding user response：

You can't register routes to current_app, instead you have to use a class called Blueprint which is built exactly for this purpose (splitting application into multiple files).

app.py

from flask import Flask, render_template
from auth import auth_bp

app = Flask(__name__)

# Register the blueprint
app.register_blueprint(auth_bp)

@app.route("/home")
def home():
    return render_template("index.html")

@app.route("/profile")
def profile():
    return render_template("profile.html")

auth.py

from flask import Blueprint, render_template

# Initialize the blueprint
auth_bp = Blueprint('auth', __name__)

@auth_bp.route("/login")
def login():
    return render_template("login.html")

@auth_bp.route("/register")
def register():
    return render_template("register.html")

See https://flask.palletsprojects.com/en/2.0.x/blueprints/ for more information.

CodePudding user response：

It seems like you have at least two files in which you have these routes. In your app.py file you have /home and /profile, they both work. They work because you initialised the Flask application over there.

Flask offers Blueprints to split up your application. You could create a blueprint called auth for example.

There is a specific tutorial on this subject as well.

I suggest moving the initialisation of the app variable to the __init__.py file and creating a create_app() method that returns app. In this method you can register your blueprints as well.

This method would look like:

def create_app():
    app = Flask(__name__)
    
    from . import app as application, auth
    app.register_blueprint(auth.bp)
    app.register_blueprint(application.bp)
    
    return app

Your auth.py file, for example, would look like:

from flask import Blueprint, render_template

bp = Blueprint('auth', __name__)

@bp.route("/login")
def login():
    return render_template("login.html")

@bp.route("/register")
def register():
    return render_template("register.html")