Master - Detail Form with multiple children

Hi,
I have managed to create a Master - Detail form in APEX with 2 child tables. For evey parent it brings back the associated child records from the
2 tables in 2 regions.
I am having a problem with the Add Row buttons. I copied the button from region 1 ( child 1) to region 2 (child 2). Re-named them (AddRows2).
When I hit hit Child2 Add Rows, it adds the row to Child 1 region. I suspect it's got something to do with the MRU Process, so I created another
one called MRU2, based on button Addrows2/ Child table 2. Seems logical, but it still creates the new record in Region 1 ( Child 1).
Any ideas or examples,
Thx.

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

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Master Detail Form with Report - Referring a column in another table

I have master detail form with a report option. The master table has a column that also references a look up table.
When the report is displayed the lookup column id is displayed. Rather I want to get the look-up value from a lookup table
and display in the report.
When I see the report region Query definition , it just has the columns to add/remove only from the master table.
Could you pls help me with this regard.
Eg :
Dept Table
dept_id
dept_name
location_id
Employee Table
employee_id
employee_name
dept_id
location
location_id_id
location_name
Master is Dept, Detail is dept and lookup table is location.

Simply add the lookup table to the FROM clause and join its PK with the FK in the master table in your query. That's basic SQL, and you definitely must get a good grasp of SQL to do more than very basic work in APEX.
For a good example, please see http://download.oracle.com/docs/cd/E10513_01/doc/appdev.310/e10498/build_app.htm#BCEBJJGB
While you're at it, read and implement the tasks outlined in the 2 Day + Application Express Developer's Guide - http://download.oracle.com/docs/cd/E10513_01/doc/appdev.310/e10498/toc.htm. After that, read the "Oracle Application Express 3.0-- Building a Functional Application" OBE in http://www.oracle.com/technology/obe/apex/obe30/apexdev30.htm - great stuff.
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Master/Detail form with modal edit

I have a master/detail form that I generated using the wizard that I want to change to have a modal Edit button; i.e. the behavior I want is that the form view is initially read-only and you then have to click an Edit button to make the form editable.
I figured out how to do this for the master row by making the edit button redirect back to the same page with the request set to 'EDIT' and then making all the page items read-only with a condition REQUEST <> 'EDIT'.
I cannot find a good way to do this for the detail rows, which are actually a report with editable columns. The problem is that the 'Tabular Form Element' section of the 'Column Attributes' page does not have a read-only condition.
The only work around I can come up with so far is to have a second read-only report region with the same SQL query and then display either the editable or non-editable report region conditionally depending on whether the request is EDIT. But this obviously not ideal (having same SQL in two places, etc.).
If anyone can think of a better way to do this, I'd be grateful.
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Simply add the lookup table to the FROM clause and join its PK with the FK in the master table in your query. That's basic SQL, and you definitely must get a good grasp of SQL to do more than very basic work in APEX.
For a good example, please see http://download.oracle.com/docs/cd/E10513_01/doc/appdev.310/e10498/build_app.htm#BCEBJJGB
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Error "field required" in master-detail form with FORMS 10G!!

I have a Master-Detail Form.
When the cursor stay in detail block and i chage the master record with the mouse, clicking in scroll bar, i get error "field required".
In Forms 6i, works fine!!

Master block has more than one record displayed. When I click on any item in detail (except first one) and then click on different master record (return navigation to master block, but not current record) I have FRM-40202: Field must be entered on first item in detail block.
I found that reason is this part of clear_all_master_details procedure (automatically created by Oracle Forms):
IF :System.Cursor_Item <> startitm THEN
Go_Item(startitm);
Check_Package_Failure;
END IF;
Does any have same experience?
Is it Oracle bug or I am missing something?

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.

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

Master-Detail Forms with read-only data in Master

I have a Master-Detail form created in Portal in which the master has fields that have select access (this has corporate bio/demo data) with the detail section having full access (local data).
When I go to create the form, it will not compile since it generate a DELETE code on master records.
The view I have has a master corporate record with people in depts adding detail records.
I am running Portal 3.0.9.

Hi,
This is a bug. The only workaround would be is to write your own custom event and write your own code to do all that is done in onsave.
Thanks,
Sharmila

Create master document form with multiple sub form

Hi Dear;
how can i create a master form with multiple sub form using screen painter?
best regards;

Hi Dany,
Do you mean a form connected to a MasterData Object with multiple childs?
If so:
1. Create a new ScreenPainter form;
2. Add a Folder item for each of the childs;
3. Add a new matrix to each of the childs and change their PaneLevel to from 1 to N (N = number of childs you have);
If your code you then need to catch item pressed event for the Folder Items and change the form's Pane Level accordingly.
Regards,
Vítor Vieira

Master/Details Form -- Relation Property

Is it possible to set the relation join condition property for a master/detail form programmatically. If so, what is the syntax?
Thanks,
Paul Howard
[email protected]

Use this built in
SET_RELATION_PROPERTY
(relation_name VARCHAR2,
property NUMBER,
value NUMBER);
for more detail check from the help topics. Thanks for the info but the property I want to set isn't a listed property for that built-in. I need to change the actual join statement in the relation object. This is what I'm attempting to accomplish.
I have a master-detail form with the master block containing 1 field (mfg_date)/ detail block containing order information(multiple records). This form allows me to step thru my orders by mfg_date. I need to be able to also step thru these orders by due_date if the operator chooses with a radio button. If I change the query_data_name and the the actual join statement in the relation object from the object navigator and compile and run it works fine. I can change the query_data_name programmatically but I can't find any info on changing the join statement programatically. Or is there another way to change the master block within the same form some other way?
Thanks for any pointers!
Paul Howard
[email protected]

Master Detail Form - How 2 update a field in the Detail form using a query?

Hello,
I have a master detail form with, each master record having a fixed(6) number of detail records. One of the fields in the detail record is the PART_DESCRIPTION field. I am trying to update this field by querying Table_X. TABLE_X is in the format of (desciption id, description). Description id runs from 1 to 6.
When the form displays, the PART_DESCRIPTION field for the 6 detail records needs to be automatically populated with the six values of description stored in Table_X. How can this be done?
Tried using session storage objects, but made no headway.
Would greatly appreciate pointers on how to go about doing this.
Thanks.
Dev

If you are on a Portal Version lesser than 3.0.9.8.3, then please try the following to populate
the PART_DESCRIPTION field.
Steps:-
1> Edit the form and go to the Additional PL/SQl section and put the following code in the
"...after displaying the page area" :-
declare
type t_vc_arr is table of varchar2(4000) index by binary_integer;
l_arr_desc t_vc_arr;
l_form_name varchar2(200);
l_form_state varchar2(500);
begin
l_form_name := p_session.get_module().get_name();
l_form_state := p_session.get_value_as_varchar2(
p_block_name => 'MASTER_BLOCK',
p_attribute_name => '_FORM_STATE'
if l_form_state = 'QUERY_AND_SAVE' then
select description
bulk collect into l_arr_desc
from <schema>.table_x;
htp.p('
<script>
var descArr = new Array();
var Fidx = 1;
var formObj = document.WWVM'||p_session.get_id()||';
var fieldName = "'||l_form_name||'.DETAIL_BLOCK.PART_DESCRIPTION.0";
for i in 1..l_arr_desc.count loop
htp.p('descArr['||to_char(i-1)||']="'||l_arr_desc(i)||'";');
end loop;
htp.p('
for (var i=0; i < formObj.length; i++){
if (formObj.elements.name == fieldName+Fidx){
formObj.elements[i].value = descArr[Fidx-1];
++Fidx;
htp.p('</script>');
end if;
end;

How to determine the ROWNUM in a Master Detail Form

Hello,
I am working in a Master Detail Form with Orders and Order Items Information; and I created a process that allows the users to select a Product ID on a tabular form, and the next column is populated automatically with the Product Description.
To achieve that, I followed some instructions by Denes Kubicek (http://apex.oracle.com/pls/otn/f?p=31517:241), but my case is slightly different:
<ul>I am using a wizard-created tabular form, instead of a manual tabular form; and </ul>
<ul>Instead of using another page as a Popup to pass the parameter of the ROWNUM, I am using a plug-in called “Tabular Form Super LOV” which is a modified version of the SkillBuilders’ Super LOV that works on Tabular Forms. </ul>
The Product ID is returned in the correct row by the plug-in; but in the case of the Product Description, it is always returned into the first row; and my problem is that I don't know how to determine the row where the user clicked to call the plug-in.
I set up an example in apex.oracle.com in case someone would like to look at it:
Workspace: ediazjorge
Username: test
Password: test
App Name: Sample App
App Number: 1550
BTW, I am using Apex 4.1.1.00.23 and Oracle DB 10.3.2.
Thanks in advance,
Erick

Hello VC,
Thank you for your time and help.
Unfortunately, it is still not working properly:
1. When the Popup LOV opens, the first row of the tabular form is 0, the second row is 1, and so on. How can I assign the values starting with 1 and in the format *0001* ? (I am still a novice on Apex and new to JavaScript :-), sorry about that).
--2. Also, when I close the Popup LOV, the value of P1_ROWNUM is ‘undefined’ again so I'm not sure if the Product Name column will be populated.--
3. And finally, you are using the jQuery Selector uPopupLOVIcon, which is an attribute of the Cloudy Theme. In my real application (Apex 4.1.1.00.26), my element looks like: *<img src="/i/lov_16x16.gif" width="16" height="16" alt="Popup Lov" alt="List" style="vertical-align:middle;" align="middle" />*. What do you recommend me to use as a jQuery Selector?
Again, I really appreciate your help and time. I think you solved the most difficult part.
Thank you so much,
Erick
Update: I just found out that the problem with my comment 2 is because I didn’t delete the previous dynamic action that set the value to P1_ROWNUM.
Edited by: ediazjorge on Sep 18, 2012 11:20 AM

Master detail form Error in mru internal routine: ORA-20001

Hi,
i created a master-detail form with apex standrad wizard.
Master e datail are on the same page.
All works fine.
My detail form contain some fields of my detail table.
Now i added a link on detail form for call a form with all fields of my detail table.
The link work fine.
When i try to add row or update my detail form i receive the error
Error in mru internal routine: ORA-20001: Error in MRU: row= 1, ORA-20001: ORA-20001: Current version of data in database has changed since user initiated update process. current checksum = "D472A2BF636CA11122F196B8A32B3DC8", item checksum
Any help?
Thanks in advance
Lukx

Lukx,
I've just reproduced your what I believe you wanted and didn't receive any errors. Here are the steps I took.
1) Used the wizards to create a Master Detail form (with Detail edit on the same page as the master and only showing 2 of the detail columns)
2) Used the wizard to create a FORM ON A TABLE for my detail table allowing the user to edit all detail columns
3) Created a "column link" column on the detail form of the Master Detail form which links to the FORM ON A TABLE, passing across the ID of the detail record.
When I do this, everything seems to work perfectly as expected.
Is there something I'm missing in the steps you performed to create your scenario?
Thanks
Doug
http://www.sumneva.com

Can't put Combobox in Master-Detail Form

I'm trying to create Master-Detail form with LOV's, but in both the Master and Detail selection, the Item Type LOV doesn't include combobox.
From the looking at some of the Posts, this seems to be possible.
Does anyone know what I need to do?
Thanks Larry

Hi,
This is because you do not have any LOVs defined in your application. This LOV will show the LOV types, only if the application contains any LOVs. Define a LOV and then edit the form. You will be able to see it.
Thanks,
Sharmila

Creating Detail record in Master Detail form

I have created a Master Detail form with the Detail form being on a second page.
I have no problem editing an existing detail record. However, if I attempt to create a new Detail record (insert). I get an error. It appears that the value of the field that I am linking the Master and Detail records with, does not get passed to the second (detail) form when I press the 'Create' button and I have not been able to ascertain where I may need to modify the parameters of the page.
Any guidance would be appreciated.

Hi Judy,
It's been 5-6 months since I've created a Master/Detail APEX application, but I don't remember having to create any special trigger or anything. I created a few maintenance appls over tables I created, and created an inquiry appl using Oracle vendor tables. All of them have worked nicely.
If the PK/FK's are set up correctly it just works. :-) Like magic. If I recall correctly, as you create the appl you define the the key fields to use. If the tables are defined correctly, and you 'tie' them together using the correct key fields in the application everything should work nicely.
Tony

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...

Master - Detail Form with multiple children

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