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方法
P

实例公共方法

permissions_policy(**options, &block)

覆盖全局配置的 Feature-Policy 标头的一部分

class PagesController < ApplicationController
  permissions_policy do |policy|
    policy.geolocation "https://example.com"
  end
end

选项可以像 before_action 一样传递。例如,传递 only: :index 仅覆盖索引操作上的标头

class PagesController < ApplicationController
  permissions_policy(only: :index) do |policy|
    policy.camera :self
  end
end
# File actionpack/lib/action_controller/metal/permissions_policy.rb, line 27
def permissions_policy(**options, &block)
  before_action(options) do
    if block_given?
      policy = request.permissions_policy.clone
      instance_exec(policy, &block)
      request.permissions_policy = policy
    end
  end
end