生成的文件里面是 respond_with，模板是带提示的重定向，个人喜欢模板这样有 notice 提示的

redirect_to @<%= singular_table_name %>, notice: <%= "'#{human_name} was successfully created.'" %>

google 可能没找对关键字，无果，有谁有过相关方面经验的能指点一下吗？谢谢！

用 scaffold 生成的文件如下：

class Admin::CategoriesController < ApplicationController
  before_action :set_admin_category, only: [:show, :edit, :update, :destroy]

  respond_to :html

  def index
    @admin_categories = Admin::Category.all
    respond_with(@admin_categories)
  end

  def show
    respond_with(@admin_category)
  end

  def new
    @admin_category = Admin::Category.new
    respond_with(@admin_category)
  end

  def edit
  end

  def create
    @admin_category = Admin::Category.new(admin_category_params)
    @admin_category.save
    respond_with(@admin_category)
  end

  def update
    @admin_category.update(admin_category_params)
    respond_with(@admin_category)
  end

  def destroy
    @admin_category.destroy
    respond_with(@admin_category)
  end

  private
    def set_admin_category
      @admin_category = Admin::Category.find(params[:id])
    end

    def admin_category_params
      params.require(:admin_category).permit(:category, :sort_order)
    end
end

模板如下： https://github.com/rails/rails/blob/4ba0e2fc22614cb15a7a22fe75697f367c3bcaa8/railties/lib/rails/generators/rails/scaffold_controller/templates/controller.rb

<% if namespaced? -%>
require_dependency "<%= namespaced_file_path %>/application_controller"

<% end -%>
<% module_namespacing do -%>
class <%= controller_class_name %>Controller < ApplicationController
  before_action :set_<%= singular_table_name %>, only: [:show, :edit, :update, :destroy]

  # GET <%= route_url %>
  def index
    @<%= plural_table_name %> = <%= orm_class.all(class_name) %>
  end

  # GET <%= route_url %>/1
  def show
  end

  # GET <%= route_url %>/new
  def new
    @<%= singular_table_name %> = <%= orm_class.build(class_name) %>
  end

  # GET <%= route_url %>/1/edit
  def edit
  end

  # POST <%= route_url %>
  def create
    @<%= singular_table_name %> = <%= orm_class.build(class_name, "#{singular_table_name}_params") %>

    if @<%= orm_instance.save %>
      redirect_to @<%= singular_table_name %>, notice: <%= "'#{human_name} was successfully created.'" %>
    else
      render :new
    end
  end

  # PATCH/PUT <%= route_url %>/1
  def update
    if @<%= orm_instance.update("#{singular_table_name}_params") %>
      redirect_to @<%= singular_table_name %>, notice: <%= "'#{human_name} was successfully updated.'" %>
    else
      render :edit
    end
  end

  # DELETE <%= route_url %>/1
  def destroy
    @<%= orm_instance.destroy %>
    redirect_to <%= index_helper %>_url, notice: <%= "'#{human_name} was successfully destroyed.'" %>
  end

  private
    # Use callbacks to share common setup or constraints between actions.
    def set_<%= singular_table_name %>
      @<%= singular_table_name %> = <%= orm_class.find(class_name, "params[:id]") %>
    end

    # Only allow a trusted parameter "white list" through.
    def <%= "#{singular_table_name}_params" %>
      <%- if attributes_names.empty? -%>
      params[:<%= singular_table_name %>]
      <%- else -%>
      params.require(:<%= singular_table_name %>).permit(<%= attributes_names.map { |name| ":#{name}" }.join(', ') %>)
      <%- end -%>
    end
end
<% end -%>