How can I use Flask-WTForms with Bootstrap?

How can I use Flask-WTForms with Bootstrap?

You can integrate Flask-WTForms with Bootstrap by using Bootstrap classes in your form templates. This enhances the styling.

Can you show me a simple example of a form using Flask-WTForms and Bootstrap?

Sure! Here's a basic example:

from flask import Flask, render_template
from flask_wtf import FlaskForm
from wtforms import StringField, SubmitField

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

class MyForm(FlaskForm):
    name = StringField('Name', render_kw={'class': 'form-control'})
    submit = SubmitField('Submit', render_kw={'class': 'btn btn-primary'})

@app.route('/', methods=['GET', 'POST'])
def home():
    form = MyForm()
    if form.validate_on_submit():
        return f'Hello, {form.name.data}!'
    return render_template('form.html', form=form)

And in your form.html template, you can use Bootstrap classes to style it.

What Bootstrap classes should I use for form elements?

You can use classes like form-control for input fields, btn and btn-primary for buttons, and form-group to wrap your form elements.

Is there a way to customize the error messages in Flask-WTForms?

Yes, you can customize error messages by passing a message parameter in your field validators. For example:

name = StringField('Name', validators=[DataRequired(message='Please enter your name.')])