Bsp controller

Question

Hi Abapers im creating a bsp application in this i have created a controller ' sales.do' in this i have made a controller class ' zcl_controller_sales1'.  in this controller class attribute i have declared SELECT which refers to class zcl_model_sales1. so by using this select we are using it in all the methods of the controller class to point all the diffrent method. But the point is even though i have declared this attirbute yet when i execute this i get an error in the bsp page as SAP Note
'The following error text was processed in the system:
BSP exception: An attribute with the name "SELECT" is not defined'
kindly help me out in this issue.
reward point for all useful ans.

Answer 1

Hi Madhavi,
you need to create a instance of model class in your DO_INITI method of controller class. The you can use the instance of that model class to access methods/attributes of model class in your controller or on your views (a page attribute of type model class should be declared).
if acc_model is initial.
create model object:
  acc_model ?= create_model( class_name = 'ZCL_ACCOUNT_MODEL'
                             model_id   = 'account_model' ).
  set_model( model_id = 'account_model'
             model_instance = acc_model ).
endif.