Petrik de Heus questions

Petrik de Heus answers

• Am I breaking the "Law of Demeter"?
• how to achieve text extract on rails?
• How does Rails method call like "has_one" work?
• Rails error handling with AASM state machine
• How do I get Rails to exclude some bundled gems from plugin-loading?
• How do you save IRB inputs to a .rb file?