Oracle APEX Set value to Page Item from Ajax process - oracle-apex

Question

I'm trying to upload document from APEX page to S3 bucket and I'm successful with the help of plugin from https://www.apexutil.com/ords/prod/f?p=700:200:1349309139567:::::
The plugin demonstrate retrieve the upload result and inserting to table as explained below.
Create new dynamic action;
Choose Upload Success [FM Component];
Choose "Execute JavaScript Code" action;
Inside the "Code" textarea define code:
apex.server.process("my_ajax_process", {
x01: this.browserEvent.originalEvent.detail.serverId,
x02: this.browserEvent.originalEvent.detail.file.name,
x03: this.browserEvent.originalEvent.detail.file.body.size,
x04: this.browserEvent.originalEvent.detail.file.body.type
}, {
success: function() {
console.log("success");
},
and retrieve the x0 values in Ajax process and inserting to table.
Create Ajax Process, name: "my_ajax_process"
Define PL/SQL code:
declare
l_server_id varchar2(4000) := apex_application.g_x01;
l_name varchar2(4000) := apex_application.g_x02;
l_size number := apex_application.g_x03;
l_type varchar2(4000) := apex_application.g_x04;
begin
insert into MY_TABLE (MT_SERVER_ID, MT_NAME, MT_SIZE, MT_TYPE)
values (l_server_id, l_name, l_size, l_type);
owa_util.status_line(nstatus => 204, creason => 'No Content');
end;
However I need to capture the X0 values in the Ajax process and assign to Form pages items, as I have to store the output along with other form fields and store into my table. I have tried and however its not getting updated. Any help much appreciated
declare
l_server_id varchar2(4000) := apex_application.g_x01;
l_name varchar2(4000) := apex_application.g_x02;
l_size number := apex_application.g_x03;
l_type varchar2(4000) := apex_application.g_x04;
begin
:P12_DOCUMENTURL := l_server_id;
:P12_DOCUMENTTYPE := l_type;
:P12_DOCSIZE := l_size;
owa_util.status_line(nstatus => 204, creason => 'No Content');
end;

Answer 1

:P12_DOCUMENTURL := l_server_id; -- This kind of assignment wont work in an ajax process
But you can use APEX_UTIL.SET_SESSION_STATE
BEGIN
APEX_UTIL.SET_SESSION_STATE('my_item','myvalue');
END;
Example
BEGIN
APEX_UTIL.SET_SESSION_STATE('P12_DOCUMENTURL',l_server_id);
END;
More details here -
https://docs.oracle.com/cd/E37097_01/doc.42/e35127/GUID-62AA4333-160D-44FD-9F07-D188A2F4BC55.htm#AEAPI181
Also please take a look at this https://jeffkemponoracle.com/2014/02/apex_util-set_session_state-may-or-may-not-commit/
For some more discussion about the commits issued.

Answer 2

Finally this works for me.
A dynamic action
var l01 = this.browserEvent.originalEvent.detail.serverId;
var l03 = this.browserEvent.originalEvent.detail.file.body.size;
var l04 = this.browserEvent.originalEvent.detail.file.body.type;
apex.server.process
( "upload_ajax_process",
{},
{ success: function( pData ) {
$s("P12_DOCUMENTURL",l01 );
$s("P12_DOCSIZE", l03);
$s("P12_DOCUMENTTYPE", l04);
}
}
);
Also Ajax process "upload_ajax_process" with some dummy statement. Without this I'm getting "Error: SyntaxError: Unexpected token P in JSON at position 0"
begin
owa_util.status_line(nstatus => 204, creason => 'No Content');
end;