Revision #2 has been created by Darwin Wen on Oct 27, 2011, 1:09:38 AM with the memo:
Add chinese version url
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How to ensure unicity to url
SEO, unique, URL
Notice that you cannot add this rule for actionError and actionIndex, so if you want to make unique addresses in the site controller you cannot extend the master controller, but you have to implement a special method with exception for this two actions.