1

routes.rb如果文件仅指定：rails 如何知道如何映射到控制器中的每个函数：

resources :users

但在UsersController你里面

class UsersController < ApplicationController
  # GET /users
  # GET /users.json
  def index
    @users = User.all

    respond_to do |format|
      format.html # index.html.erb
      format.json { render :json => @users }
    end
  end

  # GET /users/1
  # GET /users/1.json
  def show
    @user = User.find(params[:id])

    respond_to do |format|
      format.html # show.html.erb
      format.json { render :json => @user }
    end
  end

  # GET /users/new
  # GET /users/new.json
  def new
    @user = User.new

    respond_to do |format|
      format.html # new.html.erb
      format.json { render :json => @user }
    end
  end

  # GET /users/1/edit
  def edit
    @user = User.find(params[:id])
  end

  # POST /users
  # POST /users.json
  def create
    @user = User.new(params[:user])

    respond_to do |format|
      if @user.save
        format.html { redirect_to @user, :notice => 'User was successfully created.' }
        format.json { render :json => @user, :status => :created, :location => @user }
      else
        format.html { render :action => "new" }
        format.json { render :json => @user.errors, :status => :unprocessable_entity }
      end
    end
  end

  # PUT /users/1
  # PUT /users/1.json
  def update
    @user = User.find(params[:id])

    respond_to do |format|
      if @user.update_attributes(params[:user])
        format.html { redirect_to @user, :notice => 'User was successfully updated.' }
        format.json { head :no_content }
      else
        format.html { render :action => "edit" }
        format.json { render :json => @user.errors, :status => :unprocessable_entity }
      end
    end
  end

  # DELETE /users/1
  # DELETE /users/1.json
  def destroy
    @user = User.find(params[:id])
    @user.destroy

    respond_to do |format|
      format.html { redirect_to users_url }
      format.json { head :no_content }
    end
  end
end

rails 如何确定例如index function mapstoGET/users而create functionmap to POST/users？

怎么resources :users知道映射到的UsersController？

4

2 回答 2

4

Rails 基于“约定优于配置”范式。

因此，“resources :users”行表明所有标准 CRUD 方法都由相应的 UsersController < 支持 - 'Users' 前缀与控制器、模型等匹配。

于 2013-02-10T23:42:25.807 回答
1

请查看 rails 路线指南： http: //guides.rubyonrails.org/routing.html

并在实践中查看路由声明在您的项目目录中发出此命令：

耙路线

同样如前所述，坚持约定并记住 Rails 是一个非常固执己见的软件。

于 2013-05-09T10:40:32.513 回答