Rails has built-in support to debug RJS – to activate it, set +ActionView::Base.debug_rjs+ to _true_. This will specify that RJS responses should be wrapped in a try/catch block that displays the caught exception using +alert()+ (and then re-raises it).
To enable it, add the following in the +Rails::Initializer do |config|+ block inside +environment.rb+:
Rails has built-in support to debug RJS. To enable it, add the following in the +Rails::Initializer do |config|+ block inside +environment.rb+:
<ruby>
config.action_view[:debug_rjs] = true
</ruby>
Or, at any time, set +ActionView::Base.debug_rjs+ to _true_:
Or, at any time, set +ActionView::Base.debug_rjs+ to true:
<ruby>
ActionView::Base.debug_rjs = true
</ruby>
This will specify that RJS responses should be wrapped in a try/catch block that displays the caught exception using +alert()+ (and then re-raises it).
TIP: For more information on debugging JavaScript, refer to "Firebug":http://getfirebug.com/, the popular debugger for Firefox.