Rails RESTful API实战 #

rails new api --api --database=postgresql
cd api

# app/controllers/api/v1/articles_controller.rb
module Api
  module V1
    class ArticlesController < BaseController
      def index
        @articles = Article.all
        render json: @articles
      end
      
      def show
        @article = Article.find(params[:id])
        render json: @article
      end
      
      def create
        @article = Article.new(article_params)
        
        if @article.save
          render json: @article, status: :created
        else
          render json: { errors: @article.errors }, status: :unprocessable_entity
        end
      end
      
      private
      
      def article_params
        params.require(:article).permit(:title, :body)
      end
    end
  end
end