[英]How can I run a Rails controller action manually (“offline”)?
I need a way to run controller actions manually "offline" and store the result output. 我需要一种手动“离线”运行控制器操作并存储结果输出的方法。
Looking into controller initialization, it seems nothing interesting happens there. 查看控制器初始化,似乎没有什么有趣的事情发生。
Looking into send_action
, it seems by the time this is called, the controller instance already knows much about the action! 查看
send_action
,似乎在调用此方法时,控制器实例已经对该动作了如指掌! (eg @_action_name
, @_env
, etv... are already set!). (如
@_action_name
, @_env
,ETV ...已经设置!)。
I need to understand where that happened so I can do in manually to a controller instance. 我需要了解发生的位置,以便可以手动对控制器实例进行操作。 I have never quite figured out how to navigate code as dynamic as Rails, and cannot seem to find out where this set up occurs.
我从来没有想过如何像Rails一样动态地导航代码,而且似乎也找不到这种设置的发生位置。 I've used
caller
in a few places to understand how actions get called but haven't found the code I'm looking for. 我在一些地方使用了
caller
,以了解如何调用操作,但没有找到我要查找的代码。
Any help is appreciated. 任何帮助表示赞赏。
I suppose by running offline you mean, run it via code in the rails console, or some sort of lib or model. 我想通过脱机运行是指通过Rails控制台中的代码或某种类型的lib或模型运行它。
You can access a controller information using the following command: 您可以使用以下命令访问控制器信息:
ActionDispatch::Integration::Session.new(Rails.application)
This will create a new session (similar to integration tests session), where you can perform requests to the rails application. 这将创建一个新会话(类似于集成测试会话),您可以在其中执行对Rails应用程序的请求。
You perform a request to your action/controller in the following manner: 您可以通过以下方式向操作/控制器执行请求:
session.get(path)
To capture the ouput, you can use the value store in session.response
and if you want to get the body, you can use: session.response.body
要捕获输出,可以在
session.response
使用值存储,如果要获取正文,可以使用: session.response.body
Example: 例:
Let's say you have the following controller: 假设您有以下控制器:
# app/controllers/tests_controller.rb
class TestsController < ApplicationController
layout false
def index
@name = 'Test'
end
end
and the following view: 和以下视图:
# app/views/tests/index.html.erb
Hi <%= @name %>
the following routes: 以下路线:
# config/routes.rb
...
resources :tests, only: :index
...
you can create the following file: 您可以创建以下文件:
# run.rb
session = ActionDispatch::Integration::Session.new(Rails.application)
path = Rails.application.routes.url_helpers.tests_path
session.get(path)
puts session.response.body
and run it via: rails runner run.rb
, you should get 'Test' 并通过以下方式运行它:
rails runner run.rb
,您应该获得“测试”
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