Index[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Y] data mapper David Siegel ages, the debug helper debugging ActionPack ActiveRecord application trace breakpoints framework trace full trace inspectors debug helper FireBug (Firefox extension) RJS debugging mode Routing Navigator instance_variables method Integration Session Interactive Ruby (Irb) interactive shell (console) introspection log files logger messages print statement (puts) Rails default logger Rails exceptions stack trace tail utility design visability development log, using Document Object Model (DOM) document-centric model DOM (Document Object Model) DOM manipulation in the Prototype JavaScript framework Domain Specific Languages (DSLs) Don't Repeat Yourself don't trust user input Drag and Drop functionality draggables 2nd dropOnEmpty droppables 2nd DRY principle |