Creating Main Controller bookshop.do 
Creating Main Controller bookshop.do
Use
The main controller is what the URL calls directly from the browser. Method
DO_REQUEST of the controller class is always executed.Prerequisites
The small MVC example
Model View Controller Tutorial in Creating Controllers describes how you create a controller with the corresponding controller class. Proceed in exactly the same way.Procedure
Give the controller class (derived from
CL_BSP_CONTROLLER2, this is set automatically) any name; we selected CL_BSP_MVCTUT for this example.Now overwrite method
DO_REQUEST as follows:|
method DO_REQUEST . data: main_view type ref to if_bsp_page. dispatch_input( ). main_view = create_view( view_name = 'default.htm' ). call_view( main_view ). endmethod. |
As long as a controller does not call a view, you will never receive a response in the browser.
A view object is created in the method and assigned to view default.htm. The view is then called.
Call
dispatch_input() is required in the main controller so that the data that may be entered in the browser can be assigned to the relevant controllers. The main controller must take on this task. The method is a component of class CL_BSP_CONTROLLER2 and therefore the controller class that is derived from it.
Now create view
default.htm: Creating Main View default.htm