Rails 3 Authenticity Token

Does anyone know how the authent开发者_如何学JAVAicity token is managed in Ruby on Rails 3? With all the unobtrusive Javascript Ruby on Rails 3 articles showing how the HTML5 data attributes are used I don't see the authenticity token anywhere.

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You need to put this in the head section of your layout file(s):

<%= csrf_meta_tag %>

—which outputs:

<meta name="csrf-token" content="<%= form_authenticity_token %>" />
<meta name="csrf-param" content="authenticity_token" />

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If you have been using

token_tag

to add validation to custom forms without the form helper, you must now use:

token_tag form_authenticity_token

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config/initializers/secret_token.rb