Process needed to delete row

Question

Hello,
I need to create a process that will enable users to delete a row when they press 'Remove Accused', this is not a button but a column link within the table that also redirects back to the current page. I'm not really sure what to do.
If you need more information just ask :)
Thank-you,
Sandy

Answer 1

Hi Sandy,
OK - Bear in mind that my page is number 212 and I'm working on a table called EMP3, which is a copy of the sample EMP table (I've just added a button to repopulate the EMP3 table if all the records are deleted!)
This is what I did:
1 - I created a report using the following SQL statement:
SELECT EMPNO, ENAME, JOB, HIREDATE
FROM EMP32 - I then created a "Hidden and Protected" page item called P212_EMPNO (you create a Hidden item and then select the "Hidden and Protected" option to do this). This item will either be NULL or will hold the EMPNO value of the item to be deleted
3 - I then went back to the Report Attributes page for my report and clicked the "Add Link Column" task (on the right of the page). When this is created, I went back to the Report Attributes and clicked the "Custom" headings option and changed the heading for the new column to   (this is just a space and means that no heading is shown)
4 - I then clicked on the edit icon for this new column and scrolled down to the Link section. In there, I made the following settings:
Link Text: Delete (you can put whatever you like)
Target: Page in this Application
Page: 212 (which is the current page)
Item 1 (Name): P212_EMPNO
Item 1 (Value): #EMPNO# (which is replaced by the value of the EMPNO column for each row in the report)
Then clicked Apply Changes to save this
5 - Then I created a new Branch on the page. When creating this, the only settings I made were:
Page: 212
Reset pagination: Checked
This is just an unconditional branch - you should have one of these on every page unless you have specifically handled branching via buttons
6 - Now the important bit. I created a new process on the page - by clicking the Create icon in the Processes section under Page Rendering. The settings I made were:
Process category: PL/SQL
click Next
Name: P212_DELETE_EMPNO (or whatever you like)
Sequence: 10
Point: On Load - Before Header
click Next
Enter PL/SQL Page Process:
BEGIN
DELETE FROM EMP3 WHERE EMPNO = :P212_EMPNO;
:P212_EMPNO := NULL;
END;click Next
Success Message: (anything you like)
Failure Message: (anything you like)
click Next
Condition Type: Value of Item in Expression 1 Is NOT NULL
Expression 1: P212_EMPNO
click Create Process
And, that should be it. You now have a hidden page item that either be NULL or will receive an EMPNO value via your new column link. When the link kicks in, the page is reloaded and the new process checks to see if P212_EMPNO has a value. If it has, it uses that value to delete the record and then resets P212_EMPNO back to NULL.
Andy