如何从scaffold_controller模板中删除respond_to块

Question

如何自定义脚手架生成器＃was following this link

类IdeasController＆lt; ApplicationController的       before_action：set_idea，only：[：show，：edit，：update，：destroy]

  # GET /ideas
  # GET /ideas.json
  def index
    @ideas = Idea.all
  end

  # GET /ideas/1
  # GET /ideas/1.json
  def show
  end

  # GET /ideas/new
  def new
    @idea = Idea.new
  end

  # GET /ideas/1/edit
  def edit
  end

  # POST /ideas
  # POST /ideas.json
  def create
    @idea = Idea.new(idea_params)

    respond_to do |format|
      if @idea.save
        format.html { redirect_to @idea, notice: 'Idea was successfully created.' }
        format.json { render action: 'show', status: :created, location: @idea }
      else
        format.html { render action: 'new' }
        format.json { render json: @idea.errors, status: :unprocessable_entity }
      end
    end
  end

  # PATCH/PUT /ideas/1
  # PATCH/PUT /ideas/1.json
  def update
    respond_to do |format|
      if @idea.update(idea_params)
        format.html { redirect_to @idea, notice: 'Idea was successfully updated.' }
        format.json { head :no_content }
      else
        format.html { render action: 'edit' }
        format.json { render json: @idea.errors, status: :unprocessable_entity }
      end
    end
  end

  # DELETE /ideas/1
  # DELETE /ideas/1.json
  def destroy
    @idea.destroy
    respond_to do |format|
      format.html { redirect_to ideas_url }
      format.json { head :no_content }
    end
  end

  private
    # Use callbacks to share common setup or constraints between actions.
    def set_idea
      @idea = Idea.find(params[:id])
    end

    # Never trust parameters from the scary internet, only allow the white list through.
    def idea_params
      params.require(:idea).permit(:name, :description, :picture)
    end
end

如何删除所有的respond_to代码？

Answer 1

使用respond_with使控制器更清洁。 This apidoc和 this screencast会回答您所有相关问题。

您的控制器方法将如此干净：

def update
  @idea.update(idea_params)
  respond_with @idea, notice: 'Idea was successfully updated.'
end

要将其应用于默认脚手架控制器模板，只需从github复制模板内容并将其放入RAILS_ROOT/lib/templates/rails/scaffold_controller/controller.rb。然后在那里应用respond_with方法。

Answer 2

就这样做。

例如

respond_to do |format|
  if @idea.save
    format.html { redirect_to @idea, notice: 'Idea was successfully created.' }
    format.json { render action: 'show', status: :created, location: @idea }
  else
    format.html { render action: 'new' }
    format.json { render json: @idea.errors, status: :unprocessable_entity }
  end
end

可以替换为

if @idea.save
  redirect_to @idea, notice: 'Idea was successfully created.'
else
  render 'new
end