Flask does not take WTForms input

Question

I'm tring to create an app with flask with WTForms.

In the controller.py i have:

@mod_private.route('/portfolio/', methods=['GET', 'POST']) @login_required def portfolio(): print "in portfolio" # I read this form = CreateCoinsForm(request.form) if request.method == 'POST' and form.validate_on_submit(): print form.coins.data #I cannot take this value return render_template("private/portfolio.html",form=form) return render_template("private/portfolio.html",form=form)

in the forms.py:

class CreateCoinsForm(Form): coins = IntegerField('coins', [DataRequired('num required'), NumberRange(min=0, max=10)])

and the template

<form method="post" action="/private/portfolio/" accept-charset="UTF-8" role="form"> <p> {{ form.coins }}</p> <p><input type=submit value=Generate> </form>

my problem, as i wrote in the code is that I cannot retrieve the string inserted in the template.

Matt Healy · Accepted Answer · 2016-09-07 13:01:25Z

Your problem suggests that you are using the built-in CSRF protection on your form, and your form actually isn't validating because you haven't included the CSRF token.

Try adjusting your template like so:

<form method="post" action="/private/portfolio/" accept-charset="UTF-8" role="form"> {{ form.hidden_tag() }} <p> {{ form.coins }}</p> <p><input type=submit value=Generate> </form>

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