FormField/FieldList Example

eg.py

from flask_wtf import Form
from wtforms import FormField, FieldList, DecimalField
from flask import Flask, render_template

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

class PairForm(Form):
    first = DecimalField('First')
    second = DecimalField('Second')

class EntryForm(Form):
    pairing = FieldList(FormField(PairForm, 'Pair'), min_entries=2, max_entries=10)


@app.route('/', methods=['post','get'])
def home():
    form = EntryForm()
    if form.validate_on_submit():
        print form.pairing.data
    return render_template('pair.html', form=form)


if __name__ == '__main__':
    app.run(debug=True, port=5001)

pair.html

<form action="" method="post">
    {{ form.hidden_tag() }}
    {{ form.pairing() }}
    <input type="submit"/>
</form>