Author Archive for james

Erector views – undefined method `default_url_options’

Published by james on January 20, 2010 in Ruby (on Rails). 2 Comments

I’m posting this because it took me too long to figure this out. Hope it saves someone else some trouble. If you want to use named route helpers to generate urls in your erector widgets you need to include ActionController::UrlWriter in your class, like so:


class Views::Layouts::BasicPage < Erector::Widgets::Page
include ActionController::UrlWriter
...
end

Absolutize for jQuery

Published by james on September 11, 2008 in JavaScript / AJAX. 4 Comments Tags: .

We’re using jQuery for one of our current projects. Today I found myself in an IE situation that could be solved by using the prototype librarie’s absolutize method. I couldn’t find any equivilent implementation that I liked in jQuery so I went ahead and ported absolutize from prototype to jquery.

Download Here

It can be used in the standard jQuery way, like so:

$('some-selector').absolutize()

Here’s the code:

jQuery.fn.absolutize = function()
{
  return this.each(function()
  {
    var element = jQuery(this);
    if (element.css('position') == 'absolute')
    {
      return element;
    }
 
    var offsets = element.offset();
    var top = offsets.top;
    var left = offsets.left;
    var width = element[0].clientWidth;
    var height = element[0].clientHeight;
 
    element._originalLeft = left - parseFloat(element.css("left") || 0);
    element._originalTop = top - parseFloat(element.css("top") || 0);
    element._originalWidth = element.css("width");
    element._originalHeight = element.css("height");
 
    element.css("position", "absolute");
    element.css("top", top + 'px');
    element.css("left", left + 'px');
    element.css("width", width + 'px');
    element.css("height", height + 'px');
    return element;
 
  });
}