Follow-up on my "Flexible Parameter Passing" post

-

I had some reactions on my post, describing an issue that occurred when using the DHTMLX library in combination with APEX:

From Bharadwaz (Bharat) Pappu , Subject: ODTUD- Oracle APEX + DHTMLX integration

Hello Christian,

The presentation at APEXPOSED will be similar to the one I did at ODTUG.

There is one huge change though…Instead of making changes to the .js files or the DHTMLX APIs I use a very powerful DHTMLX API to integrate it  with Oracle APEX.

As promised to you earlier here is a snippet of the code that will work without changing any APEX or DHTMLX APIs:

 
<link rel="STYLESHEET" type="text/css" href="/i/javascript/.../dhtmlxSuite/dhtmlxtree/samples/common/style.css">
<link rel="STYLESHEET" type="text/css" href="/i/javascript/.../dhtmlxSuite/dhtmlxtree/codebase/dhtmlxtree.css">
<script  src="/i/javascript/.../dhtmlxSuite/dhtmlxtree/codebase/dhtmlxtree.js"></script>


declare
   lv_url varchar2(1000):='f?p='||v('APP_ID')||':31:'||v('SESSION')||'::::P31_ID,P31_UID:';
BEGIN

   htp.p('
<div id="treeboxbox_tree" 
     style="width:350;
     height:600;background-color:#f5f5f5;border:1px solid Silver;overflow:auto;">
</div>
<script>
   tree=new
   dhtmlXTreeObject("treeboxbox_tree","100%","100%",0);
   tree.setImagePath("/i/javascript/.../dhtmlxSuite/dhtmlxtree/codebase/imgs/csh_bluebooks/");

   tree.setXMLAutoLoadingBehaviour("function");
   tree.setXMLAutoLoading(function(id){
      tree.loadXML("'||lv_url||'"+id+","+(new Date()).valueOf());
   });
   tree.loadXML("'||lv_url||'");

   tree.attachEvent("onOpenStart", function (id, state) {
      tree.setItemImage(id,''ajax-loader.gif'',''ajax-loader.gif'');
      return true
     });

   tree.attachEvent("onOpenEnd", function(id, state) {
      tree.setItemImage(id,''folderOpen.gif'',''folderClosed.gif'');
      });
</script>');
END;

The highlighted piece of code is the substitution for my previous integration technique (which worked but not a classy way to do bussiness)…hope you like it.

Thanks

Bharadwaz (Bharat) Pappu

From Peter Raganitsch, Subject: Your Blog posting about mod_plsql flexible parameter

Hi Christian,

I found your blog posting and learned something about flexible parameters.
Very interesting!

I just wanted to tell you, that most dhtmlx-components have a method called preventIECaching(false); to turn off sending of the additional parameter in IE.

brgds
Peter

Comments

Post a Comment

Popular posts from this blog

Remember Me - APEX Autologin

-
Image
I promised to publish about this subject to one of the attendees during my presentation at KScope 12 in San Antonio. I used this functionality in my demo application ( FifApex ) and it seems there is interest in how to do this. Most of the public websites like Facebook, LinkedIn, Twitter, Amazon or OTN do have it: an option to stay logged in, even if you closed the browser, so you do not have to authenticate each time you visit the site again. I’m pretty used to it and would be surprised if a website didn’t offer this convenient feature. OK, it’s not entirely secure, but, as I said, very convenient. I’m working on a “consumer” site/application, I’m building it with APEX and I want to offer this “remember me” option too. I knew an APEX based website that does offer this feature ( www.plsqlchallenge.com ) and I had a chat with the developer that implemented it’s login mechanism, Paul Broughton from Apex Evangelists . So, here my thanks to him for the original inspiration.   Or...
Read more

Tabular Forms on Complex Views - using INSTEAD OF Triggers

-
Image
Creating tabular forms in Apex is relative straight forward. One gets fully generated, instant insert/update/delete functionality. Unfortunately (for the form developer), tables are usually part of a more or less complex data model, which is optimized for data storage, rather then for form-layout. Well, Apex offers some possibilities to the developer to enable tabular forms beyond 1:1 table based. Collections One alternative is to create your tabular form using the Apex Collection API. There is a good article on Martin Giffy D'Souza’s blog describing this technique. This collection-approach basically pre-fetches data into a (PL/SQL) collection from a query/cursor. The “collected” data will be displayed in the form. An on-submit page process will store the data submitted from the form into the collection. After this you can perform some validation before submitting the data to table(s) in an on-submit page process. Database Views Well, I favor an approach that keeps the...
Read more

"Who are you?" – client device Categorizr for APEX

-
Image
This article describes a solution to determine the client device category (i.e. desktop, browser or tablet) your APEX application is accessed from. Until recently, building a web application with Oracle Application Express usually meant to build a desktop browser application. But if you look at the growing number of mobile devices, this will change very soon, if not already has for some of you. Being able to develop applications, that can be accessed by tablets or smart phones offers lots of new possibilities. But it also comes with some challenges. Mobile devices are different. Interaction by touch screen, screen size and (non-) support of certain common web functionality (flash, for example), just to mention a few. Oracles announcement to integrate the jQuery mobile framework into APEX 4.2 will help us to deal with many of the challenges, developing for multiple devices will bring. Until now, one of the biggest challenges is, to determine the actual client your application ...
Read more