Rails 的命名慣例

1, migration 的 tables名，複數

class CreatePostTable < ActiveRecord::Migration

  def change

    create_table :posts do |t|

    end

  end

end

2, controller名，複數

# app/controllers/posts_controller.rb

class PostsController < ApplicationController

end

3, models名，單數

# app/models/post.rb

class Post < ActiveRecord::Base

end

4, views名，資料夾是複數

# app/views/posts/index.html.erb