I’m creating a new portfolio site using Joomla and Flash. I’ve spent this past weekend creating AS3 class packages (and converting some of my AS2 classes to AS3).

I began loading thumbnails using AS3′s URLRequest and URLLoader in my main application file. I decided to create a package that would request/load the thumbnails, but I needed to return the data from the URLRequest to my main application. I was able to accomplish it using the dispatchEvent method.

Note: This functionality is the basis for my gpUrlLoader class (part of my gpAS3Library).

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I’m working on a Flash/AS3 application where I am loading various types of files (images, xml, etc). After writing the same code over and over again, I decided to create an AS3 class to use with my application. This class will load image, swf, text, xml, html, stylesheet, json, and sound files.

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I just received a Flash/AS3 error message:

1172: Definition could not be found

After many years of developing websites using Flash/AS2, I abandoned Flash web development for the new world of Ajax development (actually, Flash was the first Ajax/Web 2.0 framework).

I recently began to convert some of my AS2 class packages to AS3. I upgraded to Flash CS3 a couple of years ago, but because I have recently been doing a lot of Ajax development (primarily JQuery, YUI, and Dojo), I have only done minor Flash development, limited to Flash banners and other animation projects.

After a lot of frustration, I figured out why I was receiving errors when converting my flash AS2 classes to AS3 packages.

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I recently ran into a problem using CodeIgniter where I kept receiving the error: “Call to a member function on a non-object”. This problem occurred when I was trying to use a method from one model from within another model.

I have a model named mGalleryImages. Within this model, I have a method named addGalleryImages. Within this method, I load another model and tried to call a method from the loaded model:

function addGalleryImages(){
     ...
     $this->load->model('mUtilImages');
     ...
     $this->mUtilImages->setImageFile($_FILES['uploadFile']);
}

I receive the error when the setImageFile method is called. The problem is that when the model sees “$this”, it is looking for a method within the mGalleryImages model. The solution was to use a CodeIgniter function named get_instance().

function addGalleryImages(){
     ...
     $CI =& get_instance();
     $this->load->model('mUtilImages');
     ...
     $CI->mUtilImages->setImageFile($_FILES['uploadFile']);
}

Easy enough, but I would never have thought that this was the problem. I played with this code for hours, trying to figure out why it didn’t work similarly to a regular PHP class. But now I know.