Saving checkbox-state to table in Interactive Report

Question

Hi,
I have been working with the information on http://www.apexninjas.com/blog/wp-content/uploads/2012/03/Checkboxes_in_Interactive_Reports.pdf to create an interactive report with a column containing a checkbox for each row.
My report contains the following (simplified):
Task_id, Employee_id, Checkbox_column
The checkbox_column keeps track of which employees work on which tasks, so it could be:
Task_id, Employee_id, Checkbox_column
1               1                         0
1               2                         1
1               3                         0
signifying that only employee 2 works on task 1.
Now, I need to be able to change the 0 to 1 by clicking the checkbox, which already is possible, but I have problems saving that row to the database. Saving the checkbox state is also included in the PDF I used (page 12-14, 'Saving the checkbox state #2'), but I don't really understand where to put the scripts, I haven't worked with scripts and processes before so I could use some help understanding which script I need to put where. All in all, it's not too much code, I just don't understand where to put it.
The scripts mentioned in the PDF are:
The first one is a SQL-statement or a package, I imported the package in my environment, so I won't put the SQL here
This is the only one I know where to put:
<script type="text/javascript">
function getCurIRTab()
var temp_base_report_id = $v('apexir_report_id');
return temp_base_report_id;
</script>
This I don't know where to put:
<script type="text/javascript">
document.getElementById('P_IR_REPORT_ID').value = getCurIRTab();
</script>
the PDF says:
Now, create a hidden (just hidden, not protected!) item called P_IR_REPORT_ ID inside a HTML region.
Important! This region has to be rendered afterthe Interactive Report, so create it in the “after footer” display point!
In this regions’s footer paste the following JavaScript code, that will assign the hidden item P_IR_REPORT_ID the value of the Interactive Report ID.
But can we create a region in the after footer?
This I don't know where to put because the document doesn't specify it:
apex_ir_query.ir_query_where
(:APP_ID,--application id
99,--page id
:SESSION,--sesion ID
: P_IR_REPORT_ID -–interactive report ID);
This I don't know where to put, but I guess it's a 'processing' process:
declare
whereStmt varchar2(2000);
sqlStmt varchar2(2000);
begin
whereStmt := apex_ir_query.ir_query_where(:APP_ID,
99,
:SESSION,
:P_IR_REPORT_ID);
sqlStmt := 'update CHK_TEST set SELECTED = 0 where SELECTED= 1'||whereStmt;
execute immediate sqlStmt;
if APEX_APPLICATION.G_F01.COUNT>0 then
FOR i in 1..APEX_APPLICATION.G_F01.COUNT LOOP
update CHK_TEST
set VALID_LINE = 1
where SELECTED_ID = APEX_APPLICATION.G_F01(i)
and VALID_LINE = 0;
END LOOP;
end if;
end;
Can I please get some help understanding where exactly to put these scripts?
I've been looking around on the forum and Google but I can't find the detailed answer to what I'm looking for anywhere.
I am currently working with the test environment Oracle supplied us, because we are testing if we can use APEX at our company.
The version is Application Express 4.2.2.00.11 and it's running on Oracle 11g.
Just ask if you need any more info.
Thanks for the answers!
NDG

Answer 1

Please put together an example application on apex.oracle.com and provide developer credentials.  This would help prevent multiple posts back and forth about try this, try that, now try this, now try that......
But until you do that try this:
I think you already know that the following goes in the page html header.
<script type="text/javascript">
function getCurIRTab()
var temp_base_report_id = $v('apexir_report_id');
return temp_base_report_id;
</script>
Alternately, since you are on apex 4.2 you could just add it to the Page Attributes->JavaScript->Function and Global Variable Declaration field (without the script tags):
function getCurIRTab()
var temp_base_report_id = $v('apexir_report_id');
return temp_base_report_id;
Now you need to create an HTML region (in display point "after footer").  Then you create the P_IR_REPORT_ID hidden item inside your new region.
In the region definition you will put the following code into the region footer:
<script type="text/javascript">
document.getElementById('P_IR_REPORT_ID').value = getCurIRTab();
</script>
Alternately, you could try to add the line to the Page Attributes->JavaScript->Execute when Page Loads field:
document.getElementById('P_IR_REPORT_ID').value = getCurIRTab();
This is just an example of the procedure call you will make in your page process.
apex_ir_query.ir_query_where
(:APP_ID,--application id
99,--page id
:SESSION,--sesion ID
: P_IR_REPORT_ID -–interactive report ID);
It is included in this code which you will put into a page process.
declare
whereStmt varchar2(2000);
sqlStmt varchar2(2000);
begin
whereStmt := apex_ir_query.ir_query_where(:APP_ID,
99,
:SESSION,
:P_IR_REPORT_ID);
sqlStmt := 'update CHK_TEST set SELECTED = 0 where SELECTED= 1'||whereStmt;
execute immediate sqlStmt;
if APEX_APPLICATION.G_F01.COUNT>0 then
FOR i in 1..APEX_APPLICATION.G_F01.COUNT LOOP
update CHK_TEST
set VALID_LINE = 1
where SELECTED_ID = APEX_APPLICATION.G_F01(i)
and VALID_LINE = 0;
END LOOP;
end if;
end;
Ok, clear as mud!