Preface: When adding or modifying fields, you can configure the "Backend Addition Information Processing Function," "Backend Modification Information Processing Function," "Frontend Addition Information Processing Function," or "Frontend Modification Information Processing Function." These allow you to specify separate functions for processing field content; this approach is commonly used for models that have special requirements regarding the storage format of field content. Today, we will briefly explain how to create these processing functions. Basic setup steps: 1. Write the processing function; 2. Import the function...