[FIXED] Can GET a method but POST doesn't work. Any ideas why the method POST isn't uses?

Issue

from flask import Flask, render_template, url_for, request, redirect

app = Flask(__name__)

@app.route('/doborpompy', methods=['GET', 'POST'])
def doborpompy():

    if request.method == 'GET':
        return render_template('doborpompy.html')
    else:
        metry = 200
        if 'metry' in request.form:
            metry = request.form['metry']

        return render_template('doborpompy_wynik.html', metry=metry)

"GET /doborpompy%20method=?metry=44&metry_ogrzewane=44&ilosc_osob=44&typ_domu=pasywny&dofinansowanie=dofinansowanie&budget=standard&zrodlo=ogrzewanie_podlogowe&powietrze_woda=woda HTTP/1.1" 404 -

I can go for an option GET, but when I am trying to POST it still trying to do an GET option. Any ideas?

Solution

You are not handling the POST Action. By default when you access the route, you are doing a GET Request, so you should handle the POST Like This:

from flask import Flask, render_template, url_for, request, redirect

app = Flask(__name__)

@app.route('/doborpompy', methods=['GET', 'POST'])
def doborpompy():

    if request.method == "POST":
        return "<h1>This is how to handle post action in the if statement</h1>"
        # rest of your code ...
    
    return render_template("doborpompy.html")

if __name__ == "__main__":
    app.run()

And you should also edit this line in your doborpompy.html file:

<form id="formularz_doboru" action="{{url_for("doborpompy")}}" method="POST">

to

<form id="formularz_doboru" action="{{url_for('doborpompy')}}" method="POST">

Answered By - Mahmoud Dello