在Rails中从一个应用程序到另一个应用程序调用控制器操作

Question

I have two applications that interact with each other. I need to create a database instance of a model in the second application that is created in the first. The below code works only when I call the method in the second application after creating User instance and saving it.

app1_service.rb

def send_user_data
  json_data = {}
  user = User.last
  json_data[:app1_user_id] = user.id
  json_data[:user_name] = user.name
  render json_data
end 

app2_service.rb

def create_user
  response = App2Service.post( '/services/app1_service/send_user_data.json', query: { request: { authenticate: {auth_key: "#{APP_CONFIG[:auth_key]}"} } } )
    User.create(app1_user_id: response['app1_user_id'], user_name: response['user_name'])
end

What I want to do is to create the User instance in app2 database whenever that user is created in app1 . So I tried like this:

users_controller.rb

def create
  if @user.save

    Services::App1Controller.send_user_data(user)
end

app1_service.rb

def self.send_user_data(user)
  #Here I am not able to figure out how to call the action from the controller in the other application
end

What changes should I make so that it works as per the requirement?

Answer 1

This case you should call app2 API in order to create a User on app2 database, something like: /services/app2_service/send_user_data.json . You should also create this API on app2.

If you really need this data synchronized, it's recommended to use PostgreSQL Multi-Master Replication to keep both databases with the same data, or Kafka events.