5.8 Overall design

Models should:

• handle communication with the data source
• handle validation
• should be free of anything related to the web request (e.g. GET/POST variables) or response cycle (e.g. HTML rendering)

Views should:

• Handle end-user rendering (e.g. HTML/JS) and other presentation code (e.g. code to traverse data for rendering purposes).
• Should be free of anything related to the web request (e.g. GET/POST variables)
• should be free of any interaction with the data source

Controllers

• handle web request operations
• handles Model object creation