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.

Namespace

Module

Class

Methods

Attributes

[R] directives

Class Public methods

new()

πŸ“ Source code 
# File actionpack/lib/action_dispatch/http/permissions_policy.rb, line 113
def initialize
  @directives = {}
  yield self if block_given?
end
πŸ”Ž See on GitHub

Instance Public methods

build(context = nil)

πŸ“ Source code 
# File actionpack/lib/action_dispatch/http/permissions_policy.rb, line 132
def build(context = nil)
  build_directives(context).compact.join("; ")
end
πŸ”Ž See on GitHub

initialize_copy(other)

πŸ“ Source code 
# File actionpack/lib/action_dispatch/http/permissions_policy.rb, line 118
def initialize_copy(other)
  @directives = other.directives.deep_dup
end
πŸ”Ž See on GitHub

Definition files