Class: ActionDispatch::PermissionsPolicy::Middleware

Inherits:
Object
  • Object
show all
Defined in:
lib/action_dispatch/http/permissions_policy.rb

Constant Summary collapse

CONTENT_TYPE = 
"Content-Type"
POLICY =

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.

"Feature-Policy"

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ Middleware

Returns a new instance of Middleware.



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# File 'lib/action_dispatch/http/permissions_policy.rb', line 16

def initialize(app)
  @app = app
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/action_dispatch/http/permissions_policy.rb', line 20

def call(env)
  request = ActionDispatch::Request.new(env)
  _, headers, _ = response = @app.call(env)

  return response unless html_response?(headers)
  return response if policy_present?(headers)

  if policy = request.permissions_policy
    headers[POLICY] = policy.build(request.controller_instance)
  end

  if policy_empty?(policy)
    headers.delete(POLICY)
  end

  response
end