Jennifer
    
            
                
                    Crystal ORM using ActiveRecord pattern with flexible query DSL
                
            
             
            
             
            
        
            ActiveRecord pattern implementation for Crystal with a powerful query DSL, validation, relationship definition, translation and migration mechanism. You need to choose one of the existing drivers for your DB: MySQL or Postgres; the sqlite3 adapter automatically installs the required driver for it. Jennifer allows you to maintain everything for your models - from DB migrations and field mapping to callbacks and building queries. For detailed information see the docs and API documentation...