Model View Controller - review

MVC Review

http://www.brandeis.edu/index.html

Review of MVC

• Reminder:
  • Basic Client <-> Server structure
  • MVC is a general pattern
  • Here we are applying it to a web (http) server
• The Models: contains the application ‘state’
  • Think of it as what you want preserved if your app (i.e. the server in our case) has to be restarted
  • Think of your user’s reasonable expectations
  • Discussion
• The Controllers: master control switch
  • Sees requests from the outside world
  • Asks the models for data, sometimes updates the data
  • Asks the views for new pages or results
  • Responds to the request
  • (Note: this parallels the HTTP protocol exactly!)
• The Views
  • Use data (given by the controller)
  • To create and assemble responses to be sent
  • Responses are html, but may be other formats too