Grails Controller

Grails Controller:

• Controller is main bridge between you view and model (As our last part we discuss domain which is model in our MVC).

• Main work of controller is handle web request .

• In Grails  controller is a class with a name  with with suffix Controller  (e.g. BookController or AuthorController etc.)

• We put you controller in  grails-app/controllers directory.

• You can create your controller with commend line with command: grails create-controller controllerName (e.g. grails create-controller org.book  ,this commend  create BookController in org package in grails-app/controllers directory ).

• A controller have many Action, Actually action is  a method or closure which handle a particular web request of controller means if you have a BookController who deals with your Book related web request like create book , update book, delete book etc , Now you will create each action for handle these request eg.

       Class BookControoler {

               

         def createBook()

                             {

                             ----your business logic for create book--- 

                              }

        def updateBook()

                             {

                             ----your business logic for update book--- 

                              }

          }

    We will discuss about action letter.

• Grails Domain
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