Look for the lines selected on a tabular presentation

Hello guys and girls,

I have a small problem trying to understand if/how I can check by pressing the "submit" button if there where no records selected in my tabular presentation.

To explain better: I have a selection list in which the user select an employee. On this choice, a tabular presentation appears with the own products for this employee.

The user must check at least one of the lines to go further.

If the user does not select all and always press the "submit" button you should see an error message saying: "there are no selected product."

What I was doing until now (stupid I suppose) was to create a Boolean as validation:

DECLARE

vRow directory;

BEGIN

BECAUSE me in 1... apex_application.g_f01. COUNTY

LOOP

vRow: = apex_application.g_f01 (i);

If vRow is NULL then

Returns false;

on the other

Returns true;

end if;

END LOOP;

END;

But does not work. If I have no active records it will say nothing and let me go. If I check something even record.

Help, please.

There must be something that I have no idea about.

Thank you very much.

Gabriel

Checkboxes only support values for the lines. For example, a loop on the table will always return true since vRow will never be NULL. In addition, a table with a number equal = 0 will not be locked during all, again don't generate no errors.

No loop, just check apex_application.g_f01. COUNTY. If it is 0, no checkboxes have been verified.

Tags: Database

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