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class ActionDispatch::PermissionsPolicy

Action Dispatch PermissionsPolicy

Configures the HTTP Feature-Policy response header to specify which browser features the current document and its iframes can use.

Example global policy:

Rails.application.config.permissions_policy do |policy|
  policy.camera      :none
  policy.gyroscope   :none
  policy.microphone  :none
  policy.usb         :none
  policy.fullscreen  :self
  policy.payment     :self, "https://secure.example.com"
end

The Feature-Policy header has been renamed to Permissions-Policy. The Permissions-Policy requires a different implementation and isn’t yet supported by all browsers. To avoid having to rename this middleware in the future we use the new name for the middleware but keep the old header name and implementation for now.

Attributes

[R] directives

Public class methods

new()

Source code GitHub 
# File actionpack/lib/action_dispatch/http/permissions_policy.rb, line 118
def initialize
  @directives = {}
  yield self if block_given?
end

Public instance methods

build(context = nil)

Source code GitHub 
# File actionpack/lib/action_dispatch/http/permissions_policy.rb, line 137
def build(context = nil)
  build_directives(context).compact.join("; ")
end

initialize_copy(other)

Source code GitHub 
# File actionpack/lib/action_dispatch/http/permissions_policy.rb, line 123
def initialize_copy(other)
  @directives = other.directives.deep_dup
end

Namespace

Definition files