2010-09-11 05:04:19 -04:00
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require 'active_support/core_ext/string/strip'
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2010-02-04 17:15:16 -05:00
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module ActionView
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2010-06-16 14:17:49 -04:00
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# = Action View CSRF Helper
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2010-02-04 17:15:16 -05:00
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module Helpers
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module CsrfHelper
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2010-09-11 05:04:19 -04:00
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# Returns meta tags "csrf-param" and "csrf-token" with the name of the cross-site
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# request forgery protection parameter and token, respectively.
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#
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# <head>
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# <%= csrf_meta_tags %>
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# </head>
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#
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# These are used to generate the dynamic forms that implement non-remote links with
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# <tt>:method</tt>.
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#
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# Note that regular forms generate hidden fields, and that Ajax calls are whitelisted,
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# so they do not use these tags.
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def csrf_meta_tags
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2010-09-13 19:35:44 -04:00
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<<-METAS.strip_heredoc.chomp.html_safe if protect_against_forgery?
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2010-09-11 05:04:19 -04:00
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<meta name="csrf-param" content="#{Rack::Utils.escape_html(request_forgery_protection_token)}"/>
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<meta name="csrf-token" content="#{Rack::Utils.escape_html(form_authenticity_token)}"/>
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METAS
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2010-02-04 17:15:16 -05:00
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end
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2010-09-11 05:04:19 -04:00
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# For backwards compatibility.
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alias csrf_meta_tag csrf_meta_tags
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2010-02-04 17:15:16 -05:00
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end
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end
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end
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