Rails 4: 在 API 控制器中使用异常处理程序模块

Question

我正在尝试在我的控制器中使用异常处理程序，但它似乎没有做任何事情：

class API::PaymentsController < ApplicationController
    before_filter :set_client

    def index
        @foo = @client.foo
    end

    ...

    def set_client

      rescue ActiveRecord::RecordNotFound do |e|
        render json: e.message, status: :not_found
      end

      @client = Client.find(params[:client_id])
    end
end

当我转到 localhost:3000/clients/[invalid_id]/payments 时，我仍然看到错误：

ActiveRecord::RecordNotFound (Couldn't find Client with 'id'=1):
app/controllers/payments_controller.rb:58:in `set_client'

当我希望 RecordNotFound 处理程序处理此异常时。我错过了什么？

Answer 1

救援块在失败后出现。

def set_client
  @client = Client.find(params[:client_id])
rescue ActiveRecord::RecordNotFound => err
  render json: { message: err.message}, status: :not_found
end

Rails 4: 在 API 控制器中使用异常处理程序模块

Rails 4: Using an exception handler module in API controller

exception-handling

ruby-on-rails

ruby-on-rails-4