MVC Tableview Data Entry

Question

Hello,
I am using mvc design pattern for my bsp application.
Could you please provide me some direction as to how to create a view that will allow the user to maintain master data (insert, update, delete, select) using htmlb extension table view?
Thanks,
Partho

Answer 1

Hi Partho,
Here is the flow...
1. User clicks on the insert radio button.
2. The control goes to the controller from the view.
3. In the controller you will call insert view page.
Now...
Insert View has an internal table as a page attribute which will hold the database records.
In <b>DO_REQUEST method</b> method...
append a blank line into the internal table.
<i>(This will be used by the user to insert the values into the internal table.)</i>
Populate the internal table from the database...
Now the internal table has a blank line followed by records that are already present in the internal table.
Now the user sees a page containing the table view along with the save button.
Now when the user clicks the blank line then in the <b>iterator</b> use the below code
when 'REVW_CODE'.
IF p_edit_mode IS INITIAL.
p_edit_mode is not initial if the user selects a row from the table view.
First you have to indentify that user has clicked the blank line. For this you can use
if c_row_ref->REVW_CODE is initial
or alreay generated value, etc.,
Now you have two options...Since this is a primary key you can automatically
generate a primary key or leave it to the user. If your table is a foreign key table then you can
replace this cell to a drop down list box. the drop down list box contains the values from
the primary key table
endcase.
After user enters all the values....
He clicks Save button.
Now in <b>DO_HANDLE_EVENT</b> method
1. Catch this button event...
2. In the controller you can get the values that are present in the table view using the method...
GET_CELL_VALUE of cl_htmlb_event_tableview Class.
3. Check if the primary key value already exists in the database.
4. If yes. Show the user an error page with a back button. when he clicks it he will again reach the insert view page.
5.If no. Populate the user values into a work area.
6.Modify the internal table at index 1 from the work area.
7.modify the database table from the internal table.
8.Show a success page with a back button which will go to the main page with the radio buttons...
Hope it helps.
Regards,
Maheswaran.B
Message was edited by: Maheswaran B
Message was edited by: Maheswaran B