Flask Framework Cookbook - Second Edition

How to do it...

If you recall, the Product model looks like the following lines of code in the models.py file:

class Product(db.Model): 
    id = db.Column(db.Integer, primary_key=True) 
    name = db.Column(db.String(255)) 
    price = db.Column(db.Float) 
    category_id = db.Column(db.Integer,        db.ForeignKey('category.id')) 
    category = db.relationship( 
        'Category', backref=db.backref('products', lazy='dynamic') 
    ) 

First, we will create a ProductForm class in models.py; this will subclass the FlaskForm class, which is provided by flask_wtf, to represent the fields required on a webform:

from flask_wtf import FlaskForm from wtforms import StringField, DecimalField, SelectField class ProductForm(FlaskForm): name = StringField('Name') price = DecimalField('Price') ...