2017-07-23 11:36:41 -04:00
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# frozen_string_literal: true
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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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2017-08-26 20:12:19 -04:00
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module Helpers #:nodoc:
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2010-02-04 17:15:16 -05:00
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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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2013-07-26 11:47:18 -04:00
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# You don't need to use these tags for regular forms as they generate their own hidden fields.
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#
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2016-08-06 13:55:02 -04:00
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# For AJAX requests other than GETs, extract the "csrf-token" from the meta-tag and send as the
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2017-07-19 00:36:42 -04:00
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# "X-CSRF-Token" HTTP header. If you are using rails-ujs this happens automatically.
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2013-07-26 11:47:18 -04:00
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#
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2010-09-11 05:04:19 -04:00
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def csrf_meta_tags
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2011-04-07 20:18:33 -04:00
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if protect_against_forgery?
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[
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2016-08-06 13:36:34 -04:00
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tag("meta", name: "csrf-param", content: request_forgery_protection_token),
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tag("meta", name: "csrf-token", content: form_authenticity_token)
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2011-04-07 20:18:33 -04:00
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].join("\n").html_safe
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end
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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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