Getting value from select tag using flask
It's hard to know for certain from what you've provided, but I believe you need to add method="POST"
to your <form>
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 pythonfrom flask import Flask, flash, redirect, render_template, \ request, url_forapp = 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 isif __name__=='__main__': app.run(debug=True)
templates/index.html
<form class="form-inline" method="POST" action="{{ url_for('test') }}"> <div class="form-group"> <div class="input-group"> <span class="input-group-addon">Please select</span> <select name="comp_select" class="selectpicker form-control"> {% for o in data %} <option value="{{ o.name }}">{{ o.name }}</option> {% endfor %} </select> </div> <button type="submit" class="btn btn-default">Go</button> </div></form>