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# frozen_string_literal: true
module ActionView
# = Action View CSP Helper
module Helpers #:nodoc:
module CspHelper
# Returns a meta tag "csp-nonce" with the per-session nonce value
# for allowing inline <script> tags.
#
# <head>
# <%= csp_meta_tag %>
# </head>
#
# This is used by the Rails UJS helper to create dynamically
# loaded inline <script> elements.
#
def csp_meta_tag(**options)
if content_security_policy?
options[:name] = "csp-nonce"
options[:content] = content_security_policy_nonce
tag("meta", options)
end
end
end
end
end
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