Comments on: Oracle APEX 4.0: Cascading LOVs/Select Lists

By: Allen

Allen — Mon, 13 Dec 2010 07:31:55 +0000

Hi Patrick,

Is it not possible to have more than two columns for the list of values? Also, in cases like if the list of values is querying against a lookup table in which each record will be default values for a transaction table i.e.
—
training_courses table (lookup)
course_id number
course_name varchar2(100)
no_of_hours number
price number
instructor varchar2(100)

trainings table (transaction)
training_id number
course_id number
no_of_hours number
price number
instructor varchar2(100)
—

In the situation above, I just use the training_courses table to fetch default values for the columns no_of_hours, price, instructor in the table trainings. Can you suggest an approach I can use for this requirement?

Thanks
Allen

By: Patrick Wolf

Patrick Wolf — Mon, 01 Nov 2010 18:43:27 +0000

Hi David,

it looks like that you have set the select list for country to “Submit Page”. Just set it to “None” and set the “Cascading LOV Parent Items” for your province field instead.

Regards
Patrick

By: David Costelloe

David Costelloe — Mon, 01 Nov 2010 17:54:29 +0000

I have a form with

Name
Address
City
Country (lov)
Province( LOV cascading to Country)
Postal Code

On Create in Apex 4.0
I add text to Name, address, city
When I select the country dropdown the page submits and wipes out the text entered in the Name,Address and City field. The correct LOV is loaded fine.

Cheers
David

By: Patrick Wolf

Patrick Wolf — Sun, 31 Oct 2010 19:48:32 +0000

Hi David,

what do you mean with “the complete (create item) information is all cleared”? Do you mean the default value?

Patrick

By: David Costelloe

David Costelloe — Fri, 29 Oct 2010 13:48:11 +0000

Hi Patrick,
I am using the above on an addresses with country/states etc. One thing I noticed is I populate the name address etc and when it comes to the list of countries and the selection is Canada the second list (states) has cascading lov to the country ID.
The big issue is that when I change a country item the list is populated as expected but the complete (create item) information is all cleared by the cascade. Is there a way to not clear all the data when just changing a country?

Thanks

By: Volker

Volker — Thu, 28 Oct 2010 08:52:56 +0000

Hi Patrick,
declarative cascading LOVs in tabular forms would be a great feature.

regards
Volker

By: candida

candida — Wed, 27 Oct 2010 12:09:27 +0000

I am not actually certain if top practices have emerged around stuff like that, other than I am definite that your huge job is obviously discovered. I was wondering if you offer some registration toward your RSS feeds since I would be extremely interested.

By: Limousine New York

Limousine New York — Mon, 25 Oct 2010 08:25:26 +0000

great website. i learned a lot from your blog posts. i’m going to share this with my friends.

By: Patrick Wolf

Patrick Wolf — Wed, 20 Oct 2010 21:48:09 +0000

Yes that will work as well. Have you checked your SQL statement? What do you use as Null Value?

By: Drew

Drew — Fri, 15 Oct 2010 19:24:18 +0000

Patrick,

Can this functionality be used for cascading shuttles where both items are shuttles? I am getting an ‘invalid number’ error when attempting to do that.

Drew