在rails中进行dup或克隆操作

时间:2019-02-25 02:23:27

标签: ruby-on-rails controller clone dup

好吧,我要澄清一下

class DuplicatesController < ApplicationController
  before_action :set_venue, only: [:new]

  def new
  end

  def create
    if @venue.duplicate(venue_params)
      flash[:success] = t('controller.create.success',
                          resource: Venue.model_name.human)
      redirect_to admin_venue_url @venue
    else
      flash[:warning] = @venue.errors.full_messages.to_sentence
      render :new
    end
  end

  private
  def set_venue
    @venue = Venue.friendly.find params[:venue_id]
  end
end

def venue_params
  params.require(:venue).permit(:name,
                                :address,
                                :address_complement,
                                :city,
                                :phone)
end

结束

重复重复

(名称,                 地址,                 address_complement,                 市,                 电话)

new_venue = self.dup
new_venue.update_attributes(description: self.description,
                            logo: self.logo,
                            opening_time: self.opening_time,
                            closing_time: self.closing_time,
                            ally_id: self.ally_id)
new_venue.save

结束

如何在我的重复控制器中调用这些参数,谢谢 在创建dup之后,我需要设置属性,因为我想保存包含新信息的新记录,但是我不知道该用我的方法来做,有人可以向我解释 谢谢。

1 个答案:

答案 0 :(得分:0)

可能最好的方法是仅传递原始模型的id / slug。

然后您的重复项controller.rb看起来类似于:

class DuplicatesController < ApplicationController
  def create
    old_venue = Venue.friendly.find(params[:id])
    venue = old_venue.dup
    venue.attributes = venue_params
    if venue.save
      # success render
    else
      # error render
    end
  end

  private 

  def venue_params
    params.require(:venue).permit(:permitted_attributes) # id should not be there
  end
end

您当然可以重构它,但是我认为在这种情况下不需要它。

或者我最喜欢的是将VenueController#create更改为类似这样,以允许从另一个实例创建:

if copy_from_id = params[:copy_from_id]
  @copy_source = Venue.find_by(id: copy_from_id)
  @venue = @copy_source.dup
  @venue.attributes = venue_params
else
  @venue = Venue.new
end

if @resource.save
  ...
else
  ...
end