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debugging guide: revises the section on debugging RJS

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1 parent 95ecc08 commit 285690143ea80fe504385a409cdc28f0d9b7ada2 @fxn fxn committed Aug 17, 2010
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  1. +7 −5 railties/guides/source/debugging_rails_applications.textile
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12 railties/guides/source/debugging_rails_applications.textile
@@ -96,21 +96,23 @@ Will be rendered as follows:
Title: Rails debugging guide
</pre>
-h4. Debugging JavaScript
+h4. Debugging RJS
-Rails has built-in support to debug RJS. To enable it, add the following in the +Rails::Initializer do |config|+ block inside +environment.rb+:
+Rails has optional built-in support to debug RJS. When enabled, responses are wrapped in a try/catch block that displays the caught exception using +alert()+, and then re-raises it.
+
+The flag to enable RJS debugging in your configuration files is +config.action_view.debug_rjs+:
<ruby>
-config.action_view[:debug_rjs] = true
+config.action_view.debug_rjs = true
</ruby>
-Or, at any time, set +ActionView::Base.debug_rjs+ to true:
+or at any time setting +ActionView::Base.debug_rjs+:
<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).
+It is enabled by default in development mode, and disabled in the rest.
TIP: For more information on debugging JavaScript, refer to "Firebug":http://getfirebug.com/, the popular debugger for Firefox.

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