Rails belongs_to has_many关系，主应用程序和引擎

Question

我正在使用名为Monologue的Rails博客引擎。我希望其中一个引擎的模型与我的主要应用模型拥有belongs_to和has_many关系。用户（作者）可以有许多帖子，帖子属于作者（用户模型）。我尝试在class_name中命名模型，但它仍然在引擎中搜索模型。

错误

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 

架构

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修复类名MyApp::User

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