Master detail form issue

Hello,
I am unsure if this is a bug or how I'm doing things. I'm using version 4.1.
I am creating a master/detail report (on the same page) using the wizard to create the page. I have no problem creating the page and it works. The only changes I make to the detail region (which is a report) is to set it to display one record at a time, enable partial page refresh and change the layout to a vertical list including null columns. Essentially I want to see one record at a time. I can certainly page through them one at a time. However if I press "Add Row" it creates a new blank record below my existing one. If I keep pressing "Add row" I keep getting more blank rows. Shouldn't this blank row overwrite the currently displayed row so that there is only one row at any given time (whether its blank or a populated line). If I'm saying I only want one shouldn't it only ever display just one record regardless of whether your adding or reviewing existing detail records. It seems to me that if I tell it I only want one row, it shouldn't allow me to keep adding rows indefinitely which end up getting added to rows already on the screen. On a vertical listing with a lot of fields, you could end up scrolling for days.

Hi -
My assumptions are:
1) That you have created Master/Detail form with both Master and Detail regions on the same page.
2) The problem of NOT seeing the Detail happens when you are inserting (not updating) on Master,
in other words when you are creating a new user in Master section.
The Detail section (as created by Apex Master/Detail wizard) is a Report with a Condition set for display:
"Value of Item in Expression 1 Is Not Null" with Expression 1 populated with PK of Master.
So, change this condition to None and empty Detail section will appear in Create mode.
Note that you must now set the Form object that holds the PK for new Master record by some means,
(maybe a Page Process or such) before the Save is done, otherwise Detail record will not have FK.
Also you are going to have to play with the Conditions on the ApplyMRU and ApplyMRD Processes created
by the wizard to make sure they are only firing in Create mode when the Save for the whole page is submitted.
Lastly you can clear the values on the page with a Process of type "Clear Cache for all Items on Pages" that fires
last after page submission, again this may need a Condition to prevent clearing items before you are ready...

Similar Messages

Wizard generated Master-Detail form issues

The wizard-generated master/detail forms have several severe usability issues when the "Choose Layout" option is set to "Builder master detail with: edit detail as tabular form on same page".
Some of these issues are:
- The form has two Apply Changes buttons, one to save the master row and one to save the detail row. Users find this very confusing. If you save the master row changes, any changes to the detail rows are lost and vice versa.
- The form has two Delete buttons, one to delete the master row and one to delete the checked detail rows. Users find this confusins also. Clicking the lower delete button discards any other changes that were made.
- The Add Row button also discards any other changes that were made.
The first two issues are easily fixed. With a few simple changes to the generated page, I can make it so there is a single "Apply Changes" button that 1) saves any changes to the master row, 2) saves any changes to detail rows and 3) deletes any checked detail rows.
I cannot figure out how to solve the third issue (that the add row button discards any changes). I can make it so the "Add Row" button saves the changes, but this isn't user friendly either; I don't think any changes should be comitted unless the user specifically presses 'Apply Changes'.
So far, I thought of several ways to possibly fix this but can't get any of them to work. Some of the ideas were:
1. The 'Add Row' button could run the automatic row processing and MRU processes, but not do a commit untill/unless Apply Changes is pressed. I don't think this is feasible because http is stateless and connection pooling may be used, so we can't have a transaction that spans http requests.
2. Move the Add Row process to page rendering so that the detail table always has an empty "add row" row thereby making the Add Row button unnecessary. I tried this, but it looks like the add row process was designed to run during the page processing, not during rendering, and it fails with a divide by 0 error when it is run during page rendering.
3. Use client-side DHTML (instead of the HTML DB add row process) to add an empty row to the html table (i.e. add row button does not do a submit, it is handled entirely on the client). I tried this, but the MRU process fails because it doesn't expect the added row.
If anyone has any other ideas on how to fix this problem, they would be greatly appreciated.
HTML DB solves this problem in the SQL workshop create table wizard.
In HTML DB 1.6, the "Add Column" button does a submit but somehow saves any changes that were entered.
In HTML DB 2.0 beta, client-side DHTML is used (my approach 3 above).
Can someone from Oracle share how the HTML DB create table wizard solves this problem?

Eric,
Thanks for your feedback. Iâll add your suggestions to our list of tabular form enhancement request.
The wizard generates a regular form for the master record and a tabular form for the detail records. As you pointed out, itâs quite easy to customize this to your individual needs.
Unlike regular forms, thereâs currently no session state concept for tabular forms, so you either need to write your data to the database, or you will loose any changes if you e.g. paginate. For the same reason, the âAdd Rowâ button and the associated process is generated so that any changes are saved to the database before adding a new row. Of course the MRU process that is executed on âAdd Rowâ can be removed, if that is the preferred behavior.
A work around would be to code the DML processes for tabular forms manually, and temporary store the data in HTML DB collections to simulate a stateful behavior.
In HTML DB 2.0 we started adding DHTML features, such as the create table wizard youâre referring to. Some features, like the pull down menus, will be available to be used in your own applications. Other features, like the DHTML tabular form, wonât be available for custom applications in 2.0.
Regards,
Marc

Master detail form issue retrieving service price automatically

Hi,
I developed a master detail form in order to process service requests.
On details block I'm trying to retrieve automatically service price after I select service name from LOV.
For this purpose I created a application plsql process
declare
v_price service.price%type;
begin
select     price into v_price
from      service
where      service_no = 1;
htp.prn(v_price);
exception when others then htp.prn('An error occurred retrieving the PRICE');
end;
Which process I'm calling through javascript function in order to retrieve service price.
<script type="text/javascript">
function GetServicePrice(pThis)
var vRow = pThis.id.substr(pThis.id.indexOf('_')+1);
html_GetElement('f07_'+vRow).value = new htmldb_Get(null,html_GetElement('pFlowId').value,'APPLICATION_PROCESS=getPrice',0);
</script>
Instead of price it returns this value: "[object Object]".
Is it possible to work as I intended or it should other way around?
I appreciate your help/comments.
Application Express 4.2.1.00.08
Oracle Database 11g Express Edition Release 11.2.0.2.0
Regards,

Tonito99 wrote:
Hi Tom,
I applied these changes on page HTML Header, but now it's not returning nothing.
f07_ (price column) is empty.
<script type="text/javascript">
function GetServicePrice(pThis)
var ajaxRequest = new htmldb_Get(null, $v('pFlowId'), 'APPLICATION_PROCESS=getPrice', 0);
var ajaxReturn = ajaxRequest.get();
$s('f07_'+vRow, ajaxReturn);
</script>
Any other suggestion?
Regards,
Edited by: Tonito99 on Mar 8, 2013 3:32 PMIf you are on apex 4.2 why are you still using the legacy/undocumented methods?
You should use new javascript API apex.server.process
apex.server.process ( "getPrice", {
success: function( pData ) { $s('f07_'+vRow, pData);}
} );

Master detail form initial insert issue on details sub-region

Hello,
I created a master detail form with report which should do insertion on master and detail region/subregion.
On insert mode I enter with data master and detail block, when I press "Create" button, insertion happens only on master block (order table) not and on detail block (order_item table).
On EDIT mode it does insertions/updates on master and detail block without problems.
Application Express 4.2.1.00.08
Oracle Database 11g Express Edition Release 11.2.0.2.0
I appreciate your help.
Regards

Something like this should do the work:
CREATE OR REPLACE TRIGGER order_item_table_tr
   BEFORE INSERT
   ON order_item_table
   FOR EACH ROW
BEGIN
   IF :NEW.order_id IS NULL
   THEN
      :NEW.order_id := v ('P1_ORDER_ID');
   END IF;
END order_item_table_tr;
/Make sure the Automatic Row Processing (DML) of the order table returns key into item > Return Key Into Item > P1_ORDER_ID (or however the primary key of the order table is named)
Denes Kubicek
http://deneskubicek.blogspot.com/
http://www.apress.com/9781430235125
http://apex.oracle.com/pls/apex/f?p=31517:1
http://www.amazon.de/Oracle-APEX-XE-Praxis/dp/3826655494
-------------------------------------------------------------------

Adding button to report to link to master detail form

I want to add a button to a report to direct me to a blank master detail form to insert a new record. I have used the following code in the additional PL/SQL code section:
htp.formopen('PORTAL30.wwa_app_module.new_instance?p_moduleid=1271601405');
htp.formsubmit('p_request','Create New');
htp.formClose;
When I click this I get 'Page Not Found'.
But if I hit refresh I am directed to the correct form with the same url.
Any ideas on what the issue is?
Thanks.

Hi,
Check this sample code.
tables:sscrfields. "Fields on selection screens
selection-screen function key 1.
selection-screen function key 2.
Initialization.
sscrfields-functxt_01 = 'Report'.
sscrfields-functxt_02 = 'Exit'.
at selection-screen.
   if sscrfields-ucomm = 'FC01'.
perform f_alv_sub.
   elseif sscrfields-ucomm = 'FC02'.
   endif.
Hope it helps.

Master Detail Form - unable to add detail row

Dear,
I have a test application that runs for years on apex.oracle.com.
Since 3rd of june 2010 I am unable to add rows on a detail form.
Any ideas?
Help is welcome!
Kind regards
Lorenz

4.0 Conversion Issue
Lorenz stated I can create the orderheader, but unable to create orderlines.Simply nothing happens, when I click the add row button.>
I share the same issue as Lorenz, on a Master/Detail form, I am able to create my Master row and but nothing happens when attempting to create detail rows. I was able to switch my application to theme 13 (Traditional Blue) from 2 (Blue and Tan) and was then able to create and add details rows.
My dilemma. When switching to theme 13 and others, none appear to support Two Level Tabs in the same manner as Theme 2. Essentially the applications look and feel is not going to go over well with my user base of 3+ years.
Is there another standard theme that will support Two Level Tabs like Theme 2 and allow the addition of detail rows on a Master/Detail form?
Is this a reported 4.0 conversion issue?
Jeff

Is this a bug? master rowid value lost when saving on a master/detail form

master/detail forms seem to lose the rowid after saving, if the unique identifier is set to ROWID
to reproduce the problem:
1) create a master detail form on DEPT/EMP
-- choose 'Managed by Database (ROWID)' on the 'Define Primary Key' page.
-- do not include master row navigation (but i don't think this matters)
-- choose 'Edit detail as tabular form on same page' on the 'Choose Layout' page
-- include the master report
2) on the master/detail page, change the conditional branch that returns to the master report page
-- the normal condition for this branch is request in SAVE,DELETE,CREATE
-- change it to request in DELETE,CREATE
3) run the form and save a change
-- saves fine, session shows the ROWID value is still set
4) save a second change
-- change does not save, form reverts to Create mode
this problem does not occur when using the primary key columns instead of rowid
see http://apex.oracle.com/pls/apex/f?p=60813:7 for the ROWID version
see http://apex.oracle.com/pls/apex/f?p=60813:11 for the PK column version

Hi Saverio,
Bug *13563808* has been logged to track the reported issue, and a fix will be made available in a future release. Just to clarify, this issue is only arising when the APEX-generated Master-Detail is modified post-generation, so for users who have not modified their Master-Details using ROWID to manage their DML processes, they should not experience this issue.
In relation to my workaround, my suggestion works in my test environment, which I verified before posting the initial suggestion. Please note that the 'Reset Page' process is, by default, conditional on the "Delete" button being pressed. If you have made further modifications to your Master-Detail page, then this might explain why you're seeing different behaviour to me. You might using the "Debug" option on the Developer Toolbar useful. Viewing the debug information should help you to decipher what's going on/wrong on your page. If you still can't resolve the issue, then the safest option might be to revert the page back to it's original state, meaning the user navigates back to the Report page upon submitting changes to the Master-Detail Form page.
Regards,
Hilary

Field values erases when Add Row button is pressed in Master Detail Form

Hi,
I am using APEX 4.0. There is a master-detail form in a page, this has 5 rows in it by default, has a Add row and a Delete button. I face two problems now:
1. When the values are entered in all the 5 rows, that are in default, and Add Row button is clicked, these values are entered in the DB, but they are erased from the interface. Means when user clicks Add row he don't see the old values he has entered. All new empty rows are only seen. This might confuse the user. How can I resolve this.
2. The values are saved to the DB only when the Add row button is clicked, so suppose if the user enters some wrong values in the default rows and after he clicks Delete button, all the field values are erased. Is there a way to delete only that particular row? (Please note: the values are not saved to the DB, unless the Add Row button is clicked)
Please let me know how to resolve these 2 issues.
Thanks.

So let me get this straight:
You enter information into a tabular form and then click the add row and the data is being duplicated from the prior row or being inserted into the table ?
Thank you,
Tony Miller
Webster, TX
A lady came up to me on the street, pointed at my suede jacket and said "Do you know a cow was murdered to make that jacket?"
"I didn't know there were any witnesses", I replied " Now I'll have to kill you too"

FRM-40654 error in master-detail form while deleting record in detail block

Hi,
I am facing an issue in a custom form which is a Master-detail form while deleting a record in detail block. It is giving an error "FRM-40654 Record has been Updated by another user. Re-query to see change". I have checked the record is matching with that in database.
Can anyone help on this.
Thanks In Advance,
Midhun

Hi jan,
master block is based on Table "A" and detail block is based on a View "X".
View "X" definitions includes the tables "A","B","C" etc..
Now I have tried removing table"A" from view "X", even then the same error is ocuuring but the lock is happening on table "B" instead of "A"
Thanks,
Midhun

Default reference ID in Master Detail form

Hi,
I created a master detail form.
When inserting a new record in the detail block, I want that value from the PK item from the master block appears
in the FK item of my detail block. This problem was showed long time back in March, 2002. The answer at that time is
this issued would be fixed in 3.0.8. Now, I still have same problem and wonder if anyone has any idea?
Thanks,
Amanda

I am using 3.0.9 and its working fine for me. Which version r u in? Are you gettin 'Join Conditions' page where you can define PK/FK relation and that will take care of what you want. There is a javascript on faq for portal which you can use if your version is not supporting this one.
Hope this will help
thanks
Bakulesh

Query button in Master/Detail form

Hello All,
I created a Master / detail form...looks good for a blind query and for a specific column value...
The problem is When the user selects query button ,how do I show records that the logged in user has created.
Am already storing username in the table when the user inserts new record.
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Thanks in advance
Babu

Hi,
Write the following code in 'Query' event of the 'Query' button in your form ..
p_session.set_shadow_value(p_block_name => 'DEFAULT',
p_attribute_name => 'A_USER_ID',
p_value => portal30.wwctx_api.get_user,
p_language => PORTAL30.wwctx_api.get_nls_language);
doQuery;
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-Krishnamurthy

Master Detail Forms with 2 composite primary keys - Is there a workaround?

Hello All,
I have been searching for a workaround to the maximum 2 part primary key restriction on the multi-row updates, and master-detail forms, and am hoping that someone can help me. I am using HTMLDB v2.0.0.00.49 with IE 6 against a 9.2 DB.
I successfully implemented the workaround of Fred Stoopendaal's (see Updata PK on HTML DB ) and it works fine for single page multi-record updateable forms, but alas I haven't been able to extend it to master detail forms (I think it is something to do with Oracle not allowing the "returning" clause on views).
Here is what I tried:
two tables, one with a 2 part composite primary key, which is the master table, and a detail table with 3 part composite primary key -
--------- BEGIN SQL ---------
create table master_table
( master_col1 number
, master_col2 number
, master_col3 varchar2(30)
, constraint master_pk primary key (master_col1,master_col2));
create table detail_table
(detail_col1 number
,detail_col2 number
,detail_col3 number
,detail_col4 varchar2(30)
, constraint detail_pk primary key(detail_col1,detail_col2,detail_col3)
, constraint master_detail_fk foreign key (detail_col1,detail_col2) references master_table(master_col1,master_col2));
create or replace view v_master_table as
select rowid mata_rowid,mata.*
from master_table mata;
create or replace view v_detail_table as
select rowid deta_rowid,
(select rowid from master_table mata where mata.master_col1 = deta.detail_col1 and mata.master_col2 = deta.detail_col2) deta_mata_rowid
, deta.*
from detail_table deta;
create or replace trigger mata_ins_upd_trg
instead of insert or update on v_master_table
referencing new as new old as old
for each row
begin
if inserting then
insert into master_table (master_col1, master_col2, master_col3)
values (:new.master_col1, :new.master_col2, :new.master_col3);
end if;
if updating then
update master_table
set master_col1 = :new.master_col1,
master_col2 = :new.master_col2,
master_col3 = :new.master_col3
where rowid = :old.mata_rowid;
end if;
end;
create or replace trigger deta_ins_upd_trg
instead of insert or update on v_detail_table
referencing new as new old as old
for each row
begin
if inserting then
insert into detail_table ( detail_col1, detail_col2, detail_col3, detail_col4)
values (:new.detail_col1, :new.detail_col2, :new.detail_col3, :new.detail_col4);
end if;
if updating then
update detail_table
set detail_col1 = :new.detail_col1,
detail_col2 = :new.detail_col2,
detail_col3 = :new.detail_col3,
detail_col4 = :new.detail_col4
where rowid = :old.deta_rowid;
end if;
end;
--------- END SQL ---------
Then I created a master-detail form in Apex on the two views, using the mata_rowid and deta_rowid as primary keys, and mata_rowid=deta_mata_rowid as the link. I realise that using a function to fetch the master rowid within the detail view query is costly, but it was my intention to modify the record fetch queries to use the real FK columns once things were up and running.
It seems to generate the pages ok, and I can insert/update master table records, but as soon as I modify records in the detail table things go a bit haywire. I can't find any documentation on how the inbuilt MRU/MRD logic works, so can't figure out the issue.
Can anyone out there tell me what the problem is with the logic above, or if they have come up with a neat solution to this annoying limitation. I know that many will say that I should modify the data model to use surrogate primary keys, but many of the uses for HTMLDB are new interfaces for old schemas, so a workaround that doesn't involve wholesale data model changes would be preferable.
Thanks in advance,
Mike Cretan

Hi, this is likely not the most elegant way...but perhaps the simplest -- and I didn't have much time to play.
I used Wizard to create two separate Master Detail forms, each with a separate detail table. Thus I ended up with four pages:
Page "A" - "Selector" page for Master (Report), with Edit link driving to Detail-1
Page "B" - Editable Master/Detail-1 page (HTML / Report)
Page "C" - "Selector" page for Master (Report), with Edit link driving to Detail-2
Page "D" - Editable Master/Detail-2 page (HTML / Report)
Then I selected the primary key column TWICE on the Report on Page A. Modified the second instance of this column to navigate to Page D (passing primary key) exactly the way the original instance of this column navigates to Page B. Then I deleted Page C.
Since you can have only one Tabular Entry form per page, this seemed the best way to drive two separate detail tables from a common interface.

Master-Detail forms no longer work in Access

Hi
We have migrated an Access 2000 application into an Oracle 9i database successully. However, the application has a master-detail form that functioned correctly before migration. Since migration the child form does not appear, thus preventing the entering of a new child record.
Before migration the detail form appeared as a totally blank form. Now the detail form simply doesn't appear. The detail form is based on a select statement which selects data from a stored query. I am suspicious that this is the cause as during tests I have tried manually creating a simple master-detail form and can see this working. I was able to get the test form to fail to produce a blank subform when the subform was based on a select statement however, attempts to change the real form to look at a table rather than a select statement don't solve the problem.
We have looked on the Oracle forums, but the only error matching our requirements was posted in March 2001 with no real answer (Q: unable to launch subform after migration
This seems a problem that would not be uncommon so surely we have omitted doing something obvious.
Any help greatly appreciated.
Regards
Tim Broome

Hello. I believe I found the answer to the problems yesterday. After trying everything I could from different forums and getting nowhere, I looked at the Adobe Properties by right clicking on the program. Once in Properties, there is a compatability tab. I run Windows 7 Pro 32bit. Nevertheless, I selected the box that says "Run this program in compatability mode for" and then selected Windows 7. It seems ridiculous to run the program in compatability mode for the OS I actually have on my system but it has done the trick. All forms work now and my other PDF issues around the office have been resolved. The only downside is that some PDF documents are printing slowly, but at least everything works.
ps: I first tried running compatabiilty mode for XP but it caused several credentialing issues with my systyem and our network, allowed forms to work, but only if they originated from my system (not the network) and did not allow other PDFs to open.

Populate row of master detail form with selection from LOV?

Hi Guys,
Total noobe, Hope you can help me out with a project I am working on in Oracle Apex 4.1 with 11g XE
I am sure this is a simple enough issue but I just can’t see the solution.
I have a table called ‘STOCK’ this contains all new parts and delivery details.
‘STOCK_ID’ NUMBER PK
‘DELIVERY DATE ‘ DATE
‘PART’ VARCHAR2
‘PART_SN’ VARCHAR2
‘PART_AN’ VARCHAR2
‘INSTALLED’ CHECKBOX
I have a table that list all the current physical locations of hardware for example
ID, Till number, store location etc…
I have an table to list the devices and modification to the hardware in these store locations.
Move Date, Device, Device Serial number, Device Asset Number, Comments
I have a report & form that displays all the current physical locations of hardware and a master detail form linked to this to add devices and modifications to each store location.
I have a LOV setup on the Devices column that is based on a simple select query
SELECT PART from STOCK
ORDER BY 1
This provides me the list of parts in the stock table.
What I need to figure out is how do I get the data from the ‘STOCK’ table when I select a part in the LOV to auto populate ‘DEVICE_SN’ ‘DEVICE_AN’ in my master detail tubular form. this information is contained in the 'PART_SN' & 'PART_AN' columns of the STOCK table.
I also need to figure out how to identify the part because by default the LOV only displays one column and I have no idea which part I am selecting other than by name. i could use a popup LOV and scan a barcode into the search box and get the retuen value to display the part name in the field.
I also would like to reduce the number of records displayed in the LOV by using the ‘INSTALLED’ checkbox i.e. if checked this part has been used and will not be available for selection. The ‘PART_SN’ field can be duplicated as we often get the same part back again as a replacement after repair but this should be valaditated against i.e if the parts is ticked as installed and not available for selection in the list it can be added again this could possibly be validated based on the ‘DELIVERY DATE‘?
I hope this make some sense to you guys if you need any further details let me know.
Cheers
Darren

Hi,
I am from the Oracle Forms background too and I have been using Oracle Apex for a while. Oracle Forms is just like client-server application although it uses the Forms servlet to render its Web front-end. I think...if you're really trying to develop true-Web application, you should try to forget such features as "master with many details" in Oracle Forms. Loading all the details in a single page will cause overheads anyway. When you discover more about ajax and such third-party javascript libraries as jquery and mootools, you'll have a different mind of Web development.
Thanks.
Andy

Error creating Master/Detail Form

Hi,
I tried to create a master detail form. I went through all the steps fine, only when i click the button to create the form, i received the following errors:
ORA-20001: Unable to create master detail page. ORA-06502: PL/SQL: numeric or value error: character to number conversion error
Unable to create Master Detail pages.
Could someone please tell me what's wrong?
Thanks,
Patrick.

We are getting this message in several areas in the development environmnet. It's happening in the developer login screen, when creating new tabs, and when tryig to create master detail reports. Here is our error from the Apache Log:
[Mon Mar 2 11:41:31 2009] [error] [client 10.64.8.231] [ecid: 1236012090:148.94.143.136:24226:0:1621,0] mod_plsql: /pls/apex_qmnt/wwv_flow.accept HTTP-404 ORA-06502: PL/SQL: numeric or value error\nORA-06512: at line 31\n
I think this is different from the issue above as that is due to too many items in a shuttle list. Ours seems to be related to our new APEX insstallation. Any help is appreciated here.

Master detail form issue

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