Getting value from select tag using flask

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一整个雨季 2020-12-01 01:10

I\'m new to Flask and I\'m having trouble getting the value from my select tag. I have tried request.form[\'comp_select\'] which returns a Bad Request. However,

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一向 (楼主)

2020-12-01 01:18

It's hard to know for certain from what you've provided, but I believe you need to add method="POST" to your

element.

From the flask doc for the request object:

To access form data (data transmitted in a POST or PUT request) you can use the form attribute. ... To access parameters submitted in the URL (?key=value) you can use the args attribute.

So, if you submit your forms via POST, use request.form.get(). If you submit your forms via GET, use request.args.get().

This app behaves the way you want it to:

flask_app.py:

#!/usr/bin/env python
from flask import Flask, flash, redirect, render_template, \
     request, url_for

app = Flask(__name__)

@app.route('/')
def index():
    return render_template(
        'index.html',
        data=[{'name':'red'}, {'name':'green'}, {'name':'blue'}])

@app.route("/test" , methods=['GET', 'POST'])
def test():
    select = request.form.get('comp_select')
    return(str(select)) # just to see what select is

if __name__=='__main__':
    app.run(debug=True)

templates/index.html


  
    
        Please select

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