Question

我有两类对象...... Magician has_many Rabbits和Rabbit belongs_to Magician。

查看魔术师（show.html）时，我想列出所有相关的兔子，然后有一些空白字段和提交按钮以添加新的兔子。为此，我在魔术师的show方法（下方）中构建一只新兔子（与当前魔术师相关联）。

编辑2：找到方法让它运作但不确定它是否是＆＃34; Rails方式＆＃34;？

查看评论内联（下方）：如果我使用魔术师的show方法构建兔子，那么当show呈现为空（并且无效）时，兔子会在显示新的兔子表单字段之前结束列表。

如果我在视图中构建它，那么一切正常并且正确渲染。我被引导相信我们应该不在视图中做这种类型的东西......如果是这样，什么是解决这个问题的正确方法？

#/app/controllers/magicians_controller.rb
class MagiciansController < ApplicationController
  respond_to :html, :json

  def show
    @magician = Magician.find(params[:id])
    @rabbit = @magician.rabbits.build  # <=== build here and empty rabbit gets 
       # included in @magician.rabbits when they're rendered...
       # but is NOT included in @magician.rabbits.count for some reason?!?!?
    respond_with(@magician)
  end
...
end

#view/magicians/show.html.haml
%p
  %b Name:
  = @magician.name

%h2 Rabbits
= "There are #{pluralize(@magician.rabbits.count, "rabbit")}"
= render @magician.rabbits, :target => @magician

%h2 Add a rabbit:
- @rabbit = @clown.rabbits.build -# <=== build here and everything SEEMS to work
= render :partial =>"rabbits/form", :locals => { :parent => @magician, :foreign_key => :magician_id, :flash => flash }

编辑1：根据请求从部分添加生成的html：

  <p>
    <b>Rabbit:</b>

    <b>Color:</b>

    |
    <b>ID:</b>

    <a href="/magicians/2/rabbits" data-confirm="Sure? A bunny will die" data-method="delete" rel="nofollow">Kill Rabbit</a>
  </p>

我想你可能想看到产生这个的部分：

%p
  %b Rabbit:
  = rabbit.name

  %b Color: 
  = rabbit.color
  |
  %b ID:
  = rabbit.id
  = link_to("Kill Rabbit", [target, rabbit], :method => :delete, :confirm => "Sure? A bunny will die")

Rails：将新的子对象占位符（构建）传递给父视图

0 个答案: