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How To Solve This ?? [message #183338]

Thu, 20 July 2006 07:46

qadeerahmed
Messages: 63
Registered: July 2006
Location: Pakistan

Member

Hi Everyone !!

I'm Facing a problem, and still not yet able to solve it.

I want to solve the clashes in date sheet, i.e. on a same day, student should not have 2 exams.

Like if a student is taking 'subject1' with Class1 and 'Subject2' With Class2.
And if the exam of Subject1 is on the same day as of Subject2. then it should raise error, because no Student can have 2 exams on the same day.

For that, What I tried like this; i've two text Fields say 'BSE - 1' and 'BSE - 2', And both Fields Have LOV's Of Subjects. Let's Say I've Selected 'Subject1' From Text_Field1 LOV and 'Subject2' From Text_Field2 LOV.

Now How Can I Assure that Same Student Shouldn't Have the Exams of 2 Subjects on a same day.

Hope So You Got My Point.
Thanks

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Re: How To Solve This ?? [message #183366 is a reply to message #183338]

Thu, 20 July 2006 09:46

jowahl
Messages: 82
Registered: May 2006

Member

i think there are at least two ways to solve it:

1)
restrict the LOVs values depending on the values that the user had just selected: if exam1 is not null, show in LOV for exam2 only values that are possible (other date/other class) and vice versa.

in this case you may build the LOVs sql code dynamically with the SET_LOV_PROPERTY built in.

2)
leave the LOVs with hard coded sql code and verify later (e.g. with the WHEN-VALIDATE-ITEM trigger) if user inputs are allowed in this combination.

raise an alert with FORM_TRIGGER_FAILURE if the combination is not allowed.

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Re: How To Solve This ?? [message #183379 is a reply to message #183366]

Thu, 20 July 2006 11:19

qadeerahmed
Messages: 63
Registered: July 2006
Location: Pakistan

Member

Hi,
Thanks Jowahi, Sorry, I didn't get Your First Option.

So for Simplicity, I'm Providing the Schema in an attachment and some relevant details. Hope so it'll help you

Thanks

Attachment: New Microsoft Word Document.doc
(Size: 31.00KB, Downloaded 1151 times)

[Updated on: Thu, 20 July 2006 11:21]

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Re: How To Solve This ?? [message #183867 is a reply to message #183379]

Mon, 24 July 2006 03:38

jowahl
Messages: 82
Registered: May 2006

Member

Could you post the SQL for the current LOV's?

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