Thursday, 30 April 2015

jQuery Toggle Image

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.

Wednesday, 29 April 2015

jQuery - Replace Image

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.


2. Using jQuery to do that.


Tabular Form - Change Column Type

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.

Tuesday, 28 April 2015

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

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.

APEX 5.0 and Standard Report Column

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.

Monday, 27 April 2015

Expert Oracle APEX 2nd Edition

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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Monday, 20 April 2015

APEX 5.0 Summer School 2015

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.

Wednesday, 15 April 2015

APEX 5.0 will be released today

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.

Monday, 13 April 2015

Ask the Real Experts

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.