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Action Dispatch DebugExceptions

此中间件负责记录异常并在请求是本地的情况下显示调试页面。

方法
C
N
R

类公共方法

new(app, routes_app = nil, response_format = :default, interceptors = self.class.interceptors)

来源： 显示 | 在GitHub上

# File actionpack/lib/action_dispatch/middleware/debug_exceptions.rb, line 23
def initialize(app, routes_app = nil, response_format = :default, interceptors = self.class.interceptors)
  @app             = app
  @routes_app      = routes_app
  @response_format = response_format
  @interceptors    = interceptors
end

register_interceptor(object = nil, &block)

来源： 显示 | 在GitHub上

# File actionpack/lib/action_dispatch/middleware/debug_exceptions.rb, line 18
def self.register_interceptor(object = nil, &block)
  interceptor = object || block
  interceptors << interceptor
end

实例公共方法

call(env)

来源： 显示 | 在GitHub上

# File actionpack/lib/action_dispatch/middleware/debug_exceptions.rb, line 30
def call(env)
  _, headers, body = response = @app.call(env)

  if headers[Constants::X_CASCADE] == "pass"
    body.close if body.respond_to?(:close)
    raise ActionController::RoutingError, "No route matches [#{env['REQUEST_METHOD']}] #{env['PATH_INFO'].inspect}"
  end

  response
rescue Exception => exception
  request = ActionDispatch::Request.new env
  backtrace_cleaner = request.get_header("action_dispatch.backtrace_cleaner")
  wrapper = ExceptionWrapper.new(backtrace_cleaner, exception)

  invoke_interceptors(request, exception, wrapper)
  raise exception unless wrapper.show?(request)
  render_exception(request, exception, wrapper)
end