Decoupling entity-validations from entity-forms

This document discusses decoupling entity validations from entity forms in Drupal. It introduces constraint and constraint validator classes in the Symphony Validator component that contain validation rules and logic. It demonstrates how to add constraints to entity fields or entities by creating constraint and constraint validator classes, and notes that only the constraint class has an annotation. The document provides an overview of integrating the Symphony Validator with Drupal and offers to demonstrate adding constraints through a few steps.