不同的路线，但对Rails中的模型子类使用相同的控制器 [英] Different routes but using the same controller for model subclasses in Rails

问题描述

我有一个Model属性，其中包含使用STI的子类，

I have a Model Property which has subclasses using STI,

，我希望所有人都使用同一个控制器，但仅根据子类使用不同的视图部分。

and which I would like all to use the same controller with only different view partials depending on the subclass.

Property
Restaurant < Property
Landmark < Property

工作正常，但我不确定如何识别控制器内的子类以呈现正确的看法。就是/ restaurants工作并转到属性控制器，但是我不能说他们想要Restaurant子类吗？

It works find except I'm not sure how to discern the subclass inside the controller to render the correct view. Ie. /restaurants works and goes to the properties controller but I can't tell that they want the Restaurant subclass?

map.resources :restaurant, :controller => :properties
map.resources :properties

推荐答案

解决该问题的一种简单方法是创建一个子控制器：

A simple way to fi the problem would be to create a Sub-Controller:

class RestaurantsController < PropertiesController
end

在路线中，您可以将餐厅映射到餐厅控制器。

In the routes you would map restaurants to the restaurants controller.

更新：或者，您也可以在 routes.rb 中尝试类似的操作：

Update: Alternatively you could try something like this in your routes.rb:

map.resources :restaurants, :controller => :properties, :requirements => {:what => :Restaurant}
map.resources :properties, :requirements => {:what => :Property}

然后，您可以使用before过滤器检查params [：what]并相应地更改行为

Then you can use a before filter to check params[:what] and change behaviour accordingly.

示例：

class PropertiesController < ApplicationController
  before_filter select_model

  def select_model
    @model = params[:what].constantize
  end

  def show
    @model.find(params[:id])
    ...
  end

  ...
end

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