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Denes Kubicek

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Denes Kubicekhttp://www.blogger.com/profile/01962373591521960882noreply@blogger.comBlogger195125
Updated: 11 hours 39 min ago

Quick and Dirty - Refreshing a Select List of Values

Tue, 2015-06-23 05:14
This is a quick and dirty solution but it works. It shows hot to update a select list of values on demand without a lot of coding.

Categories: Development

AJAX Callback and jQuery creating Page Items Dynamically

Tue, 2015-06-23 04:40
This example shows a couple of interesting techniques:
  • 1. How to create and use an AJAX Callback process instead of an Application Process on Demand,
  • 2. how to create a dynamic page item,
  • 3. how to modify the item display settings and reference Font Awsome icon set and finaly,
  • 4. it shows how to call an AJAX process from javascript.
This question is based on a recent forum posting where this question was asked.

Have a look and enjoy.

Categories: Development

APEX Meetup Frankfurt

Sun, 2015-06-14 03:47
Am 26.06.2015 17.00 treffen wir uns in Frankfurt a. M. bei einem weiteren APEX Meetup. Danke an Sabine Heimsath und Moritz Klein für die Organisation. Ich zeige dort, wie man lokal eine XE Datenbank zusammen mit ORDS und Glassfish konfigurieren kann. Danach kann sehr leicht jede beliebige Version von APEX nachinstalliert werden. Der Vorteil ist, ich kann alle Features einsetzen (RESTful Services, XLS Upload) und der Austausch vo Images bzw. Konfiguration für die neue Version von APEX sind kein Problem mehr.

Die Adresse ist:

Ericsson Telekommunikation GmbH
Herriotstr. 1
Frankfurt

Our next meetup is in Frankfurt on 26th of June. Thanks to Sabine Heimsath and Moritz Klein we will meet at Ericsson Telekommunikation GmbH Herriotstr. 1 Frankfurt. I will demonstrate how to install XE with ORDS and Glassfish and how to upgrade to APEX 5.0 on a local virtual machine.

Categories: Development

APEX 5.0 - Run Applications in New Tabs Part 2

Tue, 2015-06-02 01:44
In this blog posting I was showing how to get the Firefox Browser to work with tabs in APEX 5.0. It looks like APEX 5.0 was "optimized" to work in Google Chrome and the other browsers like IE and Firefox were not fully considered. I was able to make it working using the settings I described in the first post. However, the old style popup windows would also open in a new tab. Yesterday I discovered a feature I wasn't aware of. Changing the settings using that feature helped me to get everything working as it worked before. Here is what I did:
  • 1. I uninstalled all Tab-Addons in Firefox.
  • 2. The standard settings in Tools / Options / Tabs are shown in the following screenshot:
  • 3. I installed Tab Mix Plus Add-On and changed the settings as in the screenshot:
  • 4. Finaly, I changed the preferences in my workspace:
Now, the consequences were that clicking on Run Application button, would automatically open the application in a new tab:





and the classic popups like image popup would open in a new window:



The only thing is that you need to set the options for each workspace you use.

Enjoy.
Categories: Development

APEX Plugins

Thu, 2015-05-28 01:02
This may sound like a joke but I think there must be something wrong here. This page APEX-Plugin.com is supposed to provide all the plugins out there. The only thing is that you need to log in before you download and that's O.K. However, I forgot my password and wanted to change it. The process is quite simple:
  • I click on forgot my password link.
  • Enter my email address.
  • After that I receive a unique token per email.
  • I enter that token and change my password.
  • The last thing to do is to log in with the new password.
And this is where it starts. I can't log in and nothing happens. I did write an email asking for help but except a confirmation email there was no response whatsoever.

Anyone with the similar problem?

Categories: Development

Tabular Form - Add Rows Top - Universal Theme

Wed, 2015-05-20 06:20
This old example shows how to add rows to the top of the tabular form. Unfortunately this doesn't work with the new Universal Theme. In order to make it working some small changes are required. See this example on how to do it using the new Universal Theme.

Enjoy.

Categories: Development

APEX 5.0 - New Features Training

Mon, 2015-05-11 23:42
Unser Training startet in knapp drei Wochen. Es ist zeit sich anzumelden. Wir (Dietmar und Denes) haben Tobias Arnhold eingeladen und er erzählt über das Thema Migration auf APEX 5.0. Tobias ist einer der wenigen Betatester von APEX 5.0 in Deutschland gewesen und hat die wertvolle Erfahrungen damit gemacht, die er mit uns teilen wird.

Unsere Themen zu APEX 5.0 sind zahlreich und vielfälltig. Wir decken fast alles wissenswertes ab:

1. Page Designer,
2. Universal Theme,
3. Dutzende von kleinen aber unbekannten Verbesserungen,
4. Interactive Reports,
5. File-Handling,
6. Deprecated Features und Known-Issues,
7. Modale Dialoge,
8. Mobile Anwendungen
9. Viele weitere Themen wie Auswirkungen der neuen Features auf bestehende Komponenten:

   a.Forms und Tabular Forms
   b.Plugins und Dynamic Actions

10. Migrationsthemen



Categories: Development

APEX 5.0 Universal Theme Bug - Update

Sat, 2015-05-09 02:08
The APEX team came up with a temporary fix for this issue. Please visit this forum posting for all the updates on the issue. Basically, you need to run a small function on page load. The solution is also described there.

By the way this is one of the three bugs I have discovered so far.

Categories: Development

APEX 5.0 Universal Theme Bug

Wed, 2015-05-06 02:13
The problem I described here is strange. In my case and I tested it on several laptops with many browsers and multiple installations, appears to be a Universal Theme related bug and occurs in some specific constellation - in my case on Windows 8.1 running FireFox or Google Chrome (IE11 works as expected). I noticed this problem while working on the Tabular Form chapter for the new Expert APEX book. The first thought I had is that I see pink elephants because the colleagues I asked to check the issue couldn't confirm it - they were using different OS. This seems to be somehow Windows 8.1 related by I am not 100% sure. Your help would be great and if you have the same problem, please join the post and provide your input.

Categories: Development

APEX You Tube Channel

Sun, 2015-05-03 02:56
Great idea to organize the Oracle APEX YouTube Channel. David Peake has started a Video Series about the new Page Designer in APEX 5.0. You should have a look.

Categories: Development

jQuery Toggle Image

Thu, 2015-04-30 06:20
For this, you will need two lines of code. In case you want to save the values, there is a bit more work to do but everything can be done using standards.

Categories: Development

jQuery - Replace Image

Wed, 2015-04-29 11:06
I am posting this just because I am getting questions related to this or similar issues all the time. In this example you can see how you can replace images on the fly in your page using Dynamic Actions. There are at least two good ways to do that:

1. Rendering images in a report. Refreshing a report is a predefined event in a Dynamic Action and doesn't require coding.

or

2. Using jQuery to do that.



Enjoy.
Categories: Development

Tabular Form - Change Column Type

Wed, 2015-04-29 05:34
Just started a new version of My Demo Application - based on APEX 5.0 and Universal Theme. There, I will rework the old content and provide some interesting new possibilities (as of 4.2). In this example I am showing how to change the column type from Text to Display in a tabular form.



When could this be useful? For example if you have a certain group of users not allowed to edit a column and you don't want to create additional and conditional columns. Eventually you can use this to set only specific rows to display only depending on your application logic.
Categories: Development

APEX 5.0 - PL/SQL Function Returning Error Text - Bug 20971572

Tue, 2015-04-28 05:25
I prefer using PL/SQL Function Returning Error Text while creating validations. Two days ago I discovered a bug - it is not possible to create the function if no error message entered. This bug has been documented and will probably be fixed in 5.1. The workaround is to enter a dummy text like "ERROR" or similar.

Categories: Development

APEX 5.0 and Standard Report Column

Tue, 2015-04-28 05:20
If you are using the new Page Designer in APEX 5.0, you may search for the "Standard Report Column" in the list of column types. If you switch to the component view, you will see it. In the Page Designer you don't have the old column types any more. You should choose "Plain Text" and activate the option "Escape special characters" on the bottom of the column options.

Categories: Development

Expert Oracle APEX 2nd Edition

Mon, 2015-04-27 12:19
Just submitted first of my two chapters (Tabular Forms) for the new Expert Oracle APEX 2nd Edition. The chapter is covering the most important practices in Tabular Form handling. Also, a couple of neat features like cascading select lists in Tabular Forms - this time using standards only. Still not sure when the book will be published but it should happen soon.

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Categories: Development

APEX 5.0 Summer School 2015

Mon, 2015-04-20 09:19
Es tut sich ganz schön was in der APEX Community dieses Jahr. APEX 5.0 wurde veröffentlich. APEX Connect im Juni findet statt und sollte bisher der größte APEX-Treffen im deutschprachigen Raum werden. Nun, wurde auch eine Reihe an Webinaren organisiert - APEX 5.0 Summer School - für alle, die keinen Urlaub machen oder für diejenigen, die den Urlaub langweilig finden. Meldet euch an. Die Anzahl der freien Plätze ist nicht unendlich.

Categories: Development

APEX 5.0 will be released today

Wed, 2015-04-15 11:14
Great news. Just finished wathching the Google hangout with the APEX team. They confirmed that APEX will be released today. The download should be made available soon. Stay tuned.

Categories: Development

Ask the Real Experts

Mon, 2015-04-13 01:39
On Wednesday you will have a chance to ask the APEX developers anything you would like to know about APEX 5.0. See this posting from Patrick Wolf or go directly to the registration form in order to get a link.

Categories: Development

apex.oracle.com - Upgrade to APEX 5.0

Mon, 2015-03-23 03:16
It is time to get used to the new APEX builder interface. apex.oracle.com has been upgraded to the latest pre-production version of APEX 5.0. Some functionality like "Administration" are not visible any more and you have to search a bit. The overall impression is good and my old demo application seem to still work in the most of the cases.



Enjoy.
Categories: Development