Question

我正在为一个大型移动应用程序开发一个RoR后端，目前正在使用管理面板。

我有两个模型：Activity和Deal，由HMT ActivitiesDeal加入。连接在rails控制台中以两种方式进行测试，并且像魅力一样。

活动是构建应用程序的模型，因此管理员需要能够以某种直观的方式从“编辑活动”表单向活动添加交易。我试过这个来创建activities_deal：

<%=select("deal", @deal_id, Deal.all.collect {|d| [d.title, d.id]}, {})%>
<%= link_to "Add", link_activity_deal_path(activity_id: @activity.id, deal_id: @deal_id), method:'post' %>

但它并没有像我想的那样奏效。有关如何将正确的deal_id发送到link_activity_deal_path的任何想法？这似乎是一个已经解决过很多次的问题，但我可以找到适合的任何东西。

ActivitiesDealsController：

class ActivitiesDealsController < ApplicationController

def create
    @activity = Activity.find(params[:activity_id])
    render file: 'public/404.html' and return unless @activity && Deal.find(params[:deal_id])
    @activity_deal = ActivitiesDeal.new
    @activity_deal.activity_id = params[:activity_id]
    @activity_deal.deal_id = params[:deal_id]
    if @activity_deal.save
        redirect_to proc {activity_url @activity}
    end
    render file: 'public/500.html'
end

def destroy
    p params
    @activity = Activity.find(params[:activity_id])
    render file: 'public/404.html' and return unless @activity
    @activity_deal = ActivitiesDeal.where("activity_id == ? AND deal_id == ?", params[:activity_id], params[:deal_id])
    render file: 'public/404.html' and return unless @activity_deal
    ActivitiesDeal.destroy(@activity_deal)
    redirect_to proc {activity_url @activity}
end
end

Answer 1

通过在编辑页面之外创建form_for来解决问题。

如果有人需要代码：

 <%= form_for @activity, as: :deal, :url => link_activity_deal_path(activity_id: @activity.id), method:'post' do |f|%>
<%= f.collection_select :id, @deals, :id, :title %>
<%= f.submit "Add Deal", class: "btn btn-primary" %>

在ruby变量中存储select中的id

1 个答案: