Working With Rails

Js If Blocks

= JavaScript IF/UNLESS blocks support

This plugin introduces support for IF/UNLESS blocks to Rails’ javascript generator.

Lets say you want to produce javascript that will execute blind_down visual effect to show some DOM element unless it is already visible. To accomplish this you need an IF block:

update_page do |page|
  page << "if( !($('#{element_id}').visible()) ) {" 
  page.visual_effect :blind_down, element_id
  page << "}" 
end

Instead you can use if method that this plugin provides:

update_page do |page|
  page.unless "$('#{element_id}').visible()" do
    page.visual_effect :blind_down, element_id
  end
end

Also, you can make use of javascript element proxy in the expression:

update_page do |page|
  page.unless page[element_id].visible do
    page.visual_effect :blind_down, element_id
  end
end

Download it from http://rubyforge.org/projects/js-if-blocks/ or via Rails plug in script: ./script/plugin install svn://rubyforge.org/var/svn/js-if-blocks/trunk/js-if-blocks

== Bugs & Feedback

If you encounter any bugs or has some feature proposal, feel free to email it to maxim.kulkin@gmail.com.

NOTE: This description has been extracted from the Plugin README and so the formatting may need updating to make browser friendly