Question

在索引页面中，我只是通过projects_lkp_id过滤结果。

def index
  @filter = params[:projects_lkps_id] || ProjectsLkp.premitted_homes(current_user).first.id
  @stock = Stock.where("projects_lkp_id = ?", @filter)
end

其中projects_lkps_id has_many stock

现在我的疑问是，当我创建新股票时如何将这个ID形成？

现在我在控制器中的创建方法是

def create

  @stock = Stock.new(stock_params)

  respond_to do |format|

    if @stock.save
      format.html{ redirect_to stocks_path(id: @stock.id), notice: "Item added to gallery" }
    else
      @stock = Stock.where(item: @stock.item).all
      format.html { render 'index' }
     end
  end
end

stock_params是

 params.require(:stocks).permit(:item,:unit,:projects_lkp_id)

Answer 1

如果您有嵌套路线，例如

resources :projects do 
  resources :stocks
end

生成的路线就像 -

project_stocks GET    /projects/:project_id/stocks(.:format)                                                stocks#index
                                           POST   /projects/:project_id/stocks(.:format)                                                stocks#create
new_project_stock GET    /projects/:project_id/stocks/new(.:format)                                            stocks#new
edit_project_stock GET    /projects/:project_id/stocks/:id/edit(.:format)                                       stocks#edit
project_stock GET    /projects/:project_id/stocks/:id(.:format)                                            stocks#show
                                           PATCH  /projects/:project_id/stocks/:id(.:format)                                            stocks#update
                                           PUT    /projects/:project_id/stocks/:id(.:format)                                            stocks#update
                                           DELETE /projects/:project_id/stocks/:id(.:format)                                            stocks#destroy

然后你必须在路线中拥有project_id，你将能够在控制器中拥有project_id，而不必拥有形式。控制器代码如下所示

def create
  @project = Project.find(params[:projects_id])
  @stock = @project.stocks.new(stock_params) 
  respond_to do |format|
    if @stock.save
     format.html{ redirect_to projects_stocks_path(@project), notice: "Item added to gallery" }
    else
      @stock = Stock.where(item: @stock.item).all
      format.html { render 'index' }
     end
    end
  end

和stock_params将是 -

params.require(:stocks).permit(:item,:unit)

如何将belongs_to表id带到表单？

1 个答案: