Flask: NameError: global name 'redirect' is not defined

Question

I'm trying to make a form that saves the form input as URL queries. However, I don't know why this is happening when I press the form's submit button. I'm sure it has something to do with redirect() or my form.

site.py

from flask import Flask, render_template, request

app = Flask(__name__)

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

@app.route('/hobbies/')
def blog():
    return render_template("hobbies.html")

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

@app.route('/projects/', methods=['GET', 'POST'])
def projects():
    return render_template("projects.html")

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

@app.route('/dress', methods=['GET', 'POST'])
def my_form_post():
    min_bust = request.form['min_bust']
    max_bust = request.form['max_bust']
    min_waist = request.form['min_waist']
    max_waist = request.form['max_waist']
    min_length = request.form['min_length']
    max_length = request.form['max_length']
    return redirect(url_for('/dress/', 
                             min_bust=min_bust,
                             max_bust=max_bust, 
                             min_waist=min_waist, 
                             max_waist=max_waist, 
                             min_length=min_length, 
                             max_length=max_length), code=302)

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

@app.errorhandler(404)
def page_not_found(e):
    return render_template("404.html"), 404

@app.errorhandler(500)
def internal_server_error(e):
    return render_template('500.html'), 500

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

dress.html:

{% extends "base.html" %}

{% block title %}Dress Finder{% endblock %}

{% block menu %}
<div class="menu">
    <a href="http://localhost:5000/hobbies/"><div class="button">Hobbies</div></a>
    <a href="http://localhost:5000/about/"><div class ="button"> Katie</div></a>
    <a href="http://localhost:5000/projects/"><div class="button" id="current_page">Projects</div></a>
</div>
{% endblock %}

{% block content %}
Dress Finder
<br><br><br>
Input desired Bust/Waist/Length measurements in inches and Dress Finder does the rest.
<br><br>
<form action="/dress" method="POST">
  <input type="text" name="min_bust" placeholder="Min Bust Size" class="input"> 
  to <input type="text" name="max_bust" placeholder="Max Bust Size" class="input"> 
  <br><br>
  <input type="text" name="min_waist" placeholder="Min Waist" class="input"> 
  to <input type="text" name="max_waist" placeholder="Max Waist" class="input"> 
  <br><br>
  <input type="text" name="min_length" placeholder="Min Length" class="input"> 
  to <input type="text" name="max_length" placeholder="Max Length" class="input"> 
  <br><br>
  <input type="submit" name="my-form" value="                 submit                 " class="prettyButton">
</form>
{% endblock %}

Well, it says that `redirect` is not defined. Did you define it, or import it from somewhere it is defined? — Daniel Roseman, Dec 08 '15 at 22:48

score 28 · Accepted Answer · edited May 23 '17 at 11:33

28

You need to change this:

from flask import Flask, render_template, request

to this:

from flask import Flask, render_template, request, redirect

redirect is a function call provided by the Flask library, but you have to import it to this file for it to be available. See this for the general case.

edited May 23 '17 at 11:33

Community

1
1

answered Dec 08 '15 at 22:49

Nathaniel Ford

20,545
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Thank you. I thought I had it in there. – Thrynn Dec 08 '15 at 22:51
1

This just saved my butt. thanks – mmenschig Nov 09 '16 at 02:10
@mmenschig Quite welcome! – Nathaniel Ford Nov 09 '16 at 08:32

Flask: NameError: global name 'redirect' is not defined

1 Answers1