Rails belongs_to has_many關係，主應用程序和引擎

Question

我正在使用名爲Monologue的Rails博客引擎。我希望其中一個引擎的模型與我的主要應用模型擁有belongs_to和has_many關係。用戶（作者）可以有許多帖子，帖子屬於作者（用戶模型）。我嘗試在class_name中命名模型，但它仍然在引擎中搜索模型。

錯誤

NameError: uninitialized constant Monologue::Post::MyApp::User 

post.rb

class Monologue::Post < ActiveRecord::Base 
    belongs_to :author, :class_name => "MyApp::User", :foreign_key => "author_id" 
end 

user.rb

class User < ActiveRecord::Base 
    has_many :posts, :class_name => "Monologue::Post", :foreign_key => "author_id" 
end 

架構

create_table "monologue_posts", force: true do |t| 
    t.integer "author_id" 
end 

我能走到今天使用：Creating a belongs_to relationship with a model from the main app from an engine model

Answer 1

NameError: uninitialized constant Monologue::Post::MyApp::User

您需要的user.rb修復類名MyApp::User

class MyApp::User < ActiveRecord::Base 
    has_many :posts, :class_name => "Monologue::Post", :foreign_key => "author_id" 
end