getting drop down menu Data on Flask via form is giving 400 Bad Request
Use of print in route will not affect the template. You need to pass a variable with to the template while rendering.
And as you intend to use multipart/form-data you might need to use POST method.
I am showing a scenario which you can modify as per your requirement.
app.py contains:
from flask import Flask, render_template, request, url_for, redirectapp = Flask(__name__)@app.route('/')@app.route('/index')def index(): return render_template("dropdown.html")@app.route('/login', methods=['GET', 'POST'])def login(): if request.method == "POST": car_brand = request.form.get("cars", None) if car_brand!=None: return render_template("dropdown.html", car_brand = car_brand) return render_template("dropdown.html")if __name__ == '__main__': app.run(debug=True)dropdown.html contains a simple select tag with a submit button and to show the selected value:
<!DOCTYPE html><html lang="en"><head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"> <meta name="author" content="Ahmedur Rahman Shovon"> <title>Dropdown Example</title></head><body> <p>Select a new car from the list.</p> <form id="form1" action="/login" method="POST" enctype="multipart/form-data"> <select id="mySelect" name = "cars"> <option value="Audi">Audi</option> <option value="BMW">BMW</option> <option value="Mercedes">Mercedes</option> <option value="Volvo">Volvo</option> </select> <input type="submit" value="Submit"> </form> <p>When you select a new car, a function is triggered which outputs the value of the selected car.</p> <div id="result"> {% if car_brand is defined %} You have selected: {{ car_brand }} {% endif %} </div></body></html>Output:
