Antun’s Blog

Notes on OpenLaszlo, LZX and Rich Internet Application Development

Antun’s Blog header image 4

Entries from August 2008

Empty Handlers in OpenLaszlo 4.1

August 28th, 2008 · 1 Comment

The current release of OpenLaszlo doesn’t like empty handler tags. If you compile the following code, you’ll get a compiler warning:

<canvas debug="true">
<handler name="oninit">

</handler>
</canvas>

The warning will say:
“Refusing to compile an empty handler, you should declare the event instead”
This wasn’t the case previously. The warning is intended to educate [...]

[Read more →]

Tags: LZX Tips

Installing RMagick on Cygwin

August 24th, 2008 · 2 Comments

RMagick is a Ruby to ImageMagick framework that’s needed if you want to edit images using Rails. FileColumn, a Rails plugin for handling file uploads, plugs into RMagick very smoothly. While FileColumn is really simple to use, installing RMagick on Cygwin seemed really daunting. There were a bunch of warnings on how it differs from [...]

[Read more →]

Tags: Rails

Using the form_for Method with multipart in Rails

August 22nd, 2008 · No Comments

If you’re going to upload files via an HTML form, the form’s encoding must be set to multipart/form-data. In Rails, you use a helper method to generate the form tags, so you can’t directly edit them. The preferred helper is form_for; that’s what scaffold generates.
Normally, a form_for call would look like this:

<% form_for(@entry) do |f| [...]

[Read more →]

Tags: Rails