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

Public Class Methods

new () { |self| ... } 
# File actionpack/lib/action_dispatch/http/permissions_policy.rb, line 113
def initialize
  @directives = {}
  yield self if block_given?
end

Public Instance Methods

build (context = nil) 
# File actionpack/lib/action_dispatch/http/permissions_policy.rb, line 132
def build(context = nil)
  build_directives(context).compact.join("; ")
end
initialize_copy (other) 
# File actionpack/lib/action_dispatch/http/permissions_policy.rb, line 118
def initialize_copy(other)
  @directives = other.directives.deep_dup
end