flask-bootstrap quick_form missing Submit button

The answer of @atwalsh work just fine, but you can also put your submit button in your class, and then call it in your template:

class MyForm(FlaskForm):    field1 = StringField('First field', [wtforms.validators.required()])    field2 = StringField('Second field', [wtforms.validators.required()])    field3 = StringField('Third field', [wtforms.validators.required()])--> submit_button = SubmitField('Submit Form')

And then put in your template:

{{ wtf.quick_form(form, button_map={'submit_button': 'primary'}) }}                            ^            ^

Edit:You also need to import the SubmitField method:

from wtforms import SubmitField                                    

I believe you can add the input field directly after {{ wtf.quick_form(form) }} and put both of these inside an HTML form:

<input class="btn btn-primary" type="submit" value="Login">

Example

{% import "bootstrap/wtf.html" as wtf %}{% extends "layout.j2" %}{% block content %}<h1>My form</h1><form method="POST" action="/">    {{ wtf.quick_form(form) }}    <input class="btn btn-primary" type="submit" value="Login"></form>{% endblock content %}