Reference Overview

Information-oriented technical descriptions of CQL's APIs, configuration options, and database-specific features. Use this section when you need to look up exact syntax, method signatures, or configuration values.

API Reference

Comprehensive documentation of CQL's classes and methods:

• Model Methods - Instance and class methods available on Active Record models

• Query Methods - Methods for building and executing queries

• Schema DSL - Schema definition language reference

• Migration DSL - Migration definition language reference

• Validation Options - All available validation types and options

• Callback Hooks - Lifecycle callbacks reference

• Configuration Options - All configuration settings

Database Support

Database-specific features and considerations:

• PostgreSQL - PostgreSQL-specific features and types

• MySQL - MySQL-specific features and types

• SQLite - SQLite-specific features and limitations

Quick Reference

• Quick Reference Card - Common operations at a glance

• Glossary - CQL terminology and definitions

• Error Codes - Common errors and their meanings

---

Want to understand why things work this way? Visit the Explanation section for conceptual discussions.