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debugging guide: revises the section on debugging RJS

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Xavier Noria 2010-08-17 13:19:00 +02:00
parent 95ecc08a30
commit 285690143e
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railties/guides/source/debugging_rails_applications.textile
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@ -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.