ruby-on-rails - 如何在具有嵌套模型的控制器中使用 respond_with

Question

我的报告模型 has_many 领域。

在我尝试将其切换为使用新的 respond_with 样式之前，area_controller.rb 工作正常。

切换后，创建和索引操作仍然可以正常工作，但编辑操作实际上并没有更新区域，尽管发送了 Flash 消息“区域已成功更新”。为什么？

area_controller.rb：

class AreasController < ApplicationController

  respond_to :html
  filter_resource_access
  layout "wide"

  def index
    @report = Report.find(params[:report_id])
    @areas = @report.areas
    respond_with(@report, @areas)
  end

  def show
    @report = Report.find(params[:report_id])
    @area = @report.areas.find(params[:id])
    respond_with(@report, @area)
  end

  def new
    @report = Report.find(params[:report_id])
    @area = @report.areas.build
    respond_with(@report, @area)
  end

  def create
    @report = Report.find(params[:report_id])
    @area = @report.areas.build(params[:area])
    flash[:notice] = "Area was successfully created." if @area.save
    respond_with(@report, @area)
  end

  def edit
    @report = Report.find(params[:report_id])
    @area = @report.areas.find(params[:id])
    respond_with(@report, @area)
    #also tried leaving that respond_with out
  end

  def update
    @report = Report.find(params[:report_id])
    @area = @report.areas.find(params[:id])
    flash[:notice] = "Area was successfully updated." if @area.save
    respond_with(@report, @area, :location => report_area_path(@report, @area))
    # also tried respond_with(@report, @area)
  end

  def destroy
    @report = Report.find(params[:report_id])
    @area = @report.areas.find(params[:id])
    @area.destroy
    respond_with(@report, @area)
  end

end

Answer 1

您需要更新模型上的属性：

def update
  @report = Report.find(params[:report_id])
  @area = @report.areas.find(params[:id])
  flash[:notice] = "Area was successfully updated." if @area.update_attributes(params[:area])
  respond_with(@report, @area, :location => report_area_path(@report, @area))
end