是否可以仅在特定的Rails路由上触发Rack中间件？
例如,假设我想仅在api命名空间上运行速率限制器中间件.
namespace :api do resources :users end
解决方法
我在
Rack::Throttle的速率限制方面取得了很大的成功.子类一个内置的油门类和重载允许的？方法.您的自定义逻辑可以检查正在访问的控制器,并根据需要应用速率限制.
class ApiThrottle < Rack::Throttle::Hourly
##
# Returns `false` if the rate limit has been exceeded for the given
# `request`,or `true` otherwise.
#
# Rate limits are only imposed on the "api" controller
#
# @param [Rack::Request] request
# @return [Boolean]
def allowed?(request)
path_info = (Rails.application.routes.recognize_path request.url rescue {}) || {}
# Check if this route should be rate-limited
if path_info[:controller] == "api"
super
else
# other routes are not throttled,so we allow them
true
end
end
end