Multiple instances of the same form field

Question

I have invite form with two fields defined as person and email as follows:

class InviteForm(Form):
    person = TextField(\"person\", validators=[validators.Requ         


        

Answer 1

What you're looking for is FormField which lets you build a list of the WTF Fields (or groups even).

Here's a simple example-- it'll render three string fields as a html list because that's the minimum required. If you want to add extras via javascript, then just adhere to the same naming scheme, in the case below, a fourth would have a name of person-3.

from flask import Flask, render_template_string
from flask.ext.wtf import Form
from wtforms import FieldList, StringField

app = Flask(__name__)
app.secret_key = 'TEST'


class TestForm(Form):
    person = FieldList(StringField('Person'), min_entries=3, max_entries=10)
    foo = StringField('Test')


@app.route('/', methods=['POST', 'GET'])
def example():
    form = TestForm()
    if form.validate_on_submit():
        print form.person.data
        ## [u'One', u'Two', u'Three']

    return render_template_string(
        """
            

            {{ form.hidden_tag() }}
            {{ form.person }}
            
            
        """, form=form)


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