Update tabular report column value using AJAX

Hi,
I'm developing an online store application whereby I would like the user to be able browse a list of products (tabluar report), enter an order quantity against a product and click a 'Buy' button (column link). This should then update a collection with the selected product id and order quantity. However, I'm struggling with how to update the order qty column value.
See http://apex.oracle.com/pls/otn/f?p=33248:1 for an example
The report displays the products from demo_product_info table. I have an additional column in the report SQL for the order quantity (set to '1').
I'm using a column link on the product_id column that sets
P1_TEMP_PRODUCT_ID = #PRODUCT_ID#
P1_TEMP_QTY = #QTY_ORDERED#
then re-renders the page.
I have a page rendering process that takes the values from the temp items and updates a collection.
When the user changes the order quantity, how do I update session state so the new value is picked up by the column link?
Thanks,
Andrew.

To update session state you might check out this article titled, "ApEx: Setting session state from within a PL/SQL Package/Procedure/Function" at http://atulley.wordpress.com/2007/05/17/apex-setting-session-state-from-within-a-plsql-packageprocedurefunction/
It says:
The answer lies in the set_sesssion_state procedure found in the APEX_UTIL package. E.g.
APEX_UTIL.set_session_state(
p_name => ‘PX_MY_ITEM’
, p_value => ‘wibble’);
Now, I have a question for you. Once you set the value of the column in session state, how will you make that value be put in the database?
Thanks, Maggie

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Hi,
which access methods (eg. bind variables, substitutions, ...) for getting the current row report column value can be used in the "Lov Query" property of a report column?
As what I know of and what I have read on the forum there are no bind variables for the report columns. For the "Link Text" property it seems that the column values exist as substitution strings (#COLUMN_NAME#). But they don't work in the Lov Query. => And would be good because of a hard parse each time the Lov query is executed.
The following post (Re: Simulating a correlated sub query in lov
is showing a solution to use package variables for temporary storage of the referenced value, but the only problem with that solution is that if a new record is added with the "Add rows to tabular form" process the package variable still contains the value from the last queried row! Is there a way (variable, APEX package, ...) to determine if the lov query is executed for a new record so that the package can return null?
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Patrick
http://inside-apex.blogspot.com

Hi Patrick,
I agree that it's a waste to continually use Ajax to go back to the server to get the contents of a dynamic select list.
There are no bind variables for any row item - but what you do have, as per my previous post, is the value of the data entered by the user in the first row. You can pass this into your application process (using get.add("VARIABLENAME", value)), which can use it to retrieve the correct LOV in your Ajax code - this will give you a "bind variable" that your process can use.
What you could do, however, is generate hidden select lists on your page - one for each possible LOV list and replace the contents of the new row's select list with the contents of the appropriate hidden select list. This is easy to do with javascript (using innerHTML functions). Obviously, though, the usefulness of this depends on the number and size of the select lists.
Even if you don't generate them to start with, you can keep a copy of any select lists returned by Ajax in the DOM for use on new rows. So, if you have retrieved a select list, you will have a copy of it in DOM which you can then copy into the new row. If you don't have the list in DOM, use Ajax to get it, store a copy of it and copy it into the new row.
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Regards
Andy

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Hi,
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Hi,
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Region Header:
<style type="text/css">
.rot {
background-color: red;
.orange {
background-color: orange;
</style>
Region Footer:
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var spans=document.getElementsByTagName('span');
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I put my (reduced) application on apex.oracle.com for testing.
Workspace: app
Login: [email protected]
PW: riponi
Thanks in advance,
Roger

Hi Roger,
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var h = document.getElementById(f1);
var t = h.parentNode;
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var rows = t.rows;
var k;
var j;
var c;
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please help me

Hi,
Let us assume that the DeptNAME and DeptNo columns are of type VARCHAR2. However, DeptNO column is VARCHAR2(10) and DeptNAMe is VARCHAR2(100).
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Hi,
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Regards,
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Hi,
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        werks      like vbap-werks,
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it_fields-selectflag = space.
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Update Property Promotion Column Value in InfoPath Document Library

Hello All,
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Unable to pass report column value to url in select statement. Please help

Hi all,
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{noformat}
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{noformat}
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Edited by: sumak on Jun 23, 2009 12:11 PM
Edited by: sumak on Jun 23, 2009 12:22 PM

Suma,
If you're trying to generate a column with a URL, try something like the following:
select key, num,
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Hi Sam,
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http://msdn.microsoft.com/en-us/library/ms468626%28v=office.12%29.aspx
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Blog - SharePointDeveloper.in
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Surya

Hello Surya,
>> I have put an example on APEX site …
This is indeed the best and fastest way to get help.
>> but the third version value "1.2.3" fails to display …
String parameters should be encapsulated with single/double quote signs.
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I think I understand your problem.
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Update empty row / column values

here is the sample data
Col_1 -- col_2-----col_3-------col_4------col_5------col_6
9--------111---------45-----------21
7--------877
2--------456
8--------765
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9--------111---------45-----------21--------4654------6534
7--------877---------67-----------42
2--------456---------845----------4563
8--------765
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following query i use for something:
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week2 as (select decap as decap_w2,desrvid as desrvid_w2 from drdiskspace where deweek = to_char(sysdate,'WW')-2),
week3 as (select decap as decap_w3,desrvid as desrvid_w3 from drdiskspace where deweek = to_char(sysdate,'WW')-3),
week4 as (select decap as decap_w4,desrvid as desrvid_w4 from drdiskspace where deweek = to_char(sysdate,'WW')-4),
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from drdiskspace, drserver, week1, week2, week3, week4, week5, week6, week7, week8, week9, week10
where drdiskspace.deweek = to_char(sysdate,'WW')
and drdiskspace.desrvid=drserver.desrvid
and drdiskspace.desrvid=desrvid_w1
and drdiskspace.desrvid=desrvid_w2
and drdiskspace.desrvid=desrvid_w3
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greatz,
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How to refresh a report column value alone.

Hi All,
If we have a static report and for one of the columns of report, if I need to give a feature to click on it and a popup appears and there is a checkbox to select values on that popup page and finally after making changes and I press on apply changes, It should close the popup window and then come and change the value of that column alone in original report instead of refreshing the whole page.
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Edited by: Vikas Krishna on Sep 29, 2009 9:47 PM

Vikas,
I slightly modified on of my older examples and you will find everything here:
http://apex.oracle.com/pls/otn/f?p=31517:241
Denes Kubicek
http://deneskubicek.blogspot.com/
http://www.opal-consulting.de/training
http://apex.oracle.com/pls/otn/f?p=31517:1
------------------------------------------------------------------------------

Update all null columns value in single row statement

4) Write a single SQL statement to update all the columns of a table to have -9 instead of null value
e.g:
Before update:
C1     C2     C3
null     9     null
10     null     88
12     8     0
After update:
C1     C2     C3
-9     9     -9
10     -9     88
12     8     0
Thanks

Hi,
Update < table name >
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column name = nvl(column name, -9)
Regards
Message was edited by:
Seshu

Update tabular report column value using AJAX

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