Validating Database Attributes With SQLAlchemy
Validating database attributes with SQLAlchemy is a breeze thanks to the `@validates` decorator, ensuring only correct data reaches your code.
Validations are a method of ensuring that our databases only receive the type of information that is appropriate for each attribute. After all, we wouldn't want a surprise type of data to find it's way into our code and cause unexpected behavior. Fortunately, SQLAlchemy has a package that makes validations quick and easy!
Let's look at some simple examples. Imagine we have a simple model, Sandwich. Here we have already initialized our database and are importing it from a configuration file.
from config import db
class Sandwich(db.Model):
__tablename__ = 'sandwiches'
id = db.Column(db...