我正在寻找解决以下情况的最佳做法:
我有一个“添加”模型,它应该是与其他一些模型相关的多对多模型.
例子:
# Meal-Model
has_and_belongs_to_many :additives
# Offer-Model
has_and_belongs_to_many :additives
# Additive-Model
has_and_belongs_to_many :meals
has_and_belongs_to_many :meals
路由以下列方式嵌套:
resources :offers do
resources :additives
end
resources :meals do
resources :additives
end
所以我得到这样的网址:
/offers/123/additives
/meals/567/additives
两条路线都导致相同的控制器动作,即添加剂#index.在AdditivesController中,我检查params是否可用于选择要获取的数据:
class AdditivesController < ApplicationController
before_filter :offermealswitch
# GET /restaurants/1/meals/123/additives
# GET /restaurants/1/offers/123/additives
def index
@additives = @additivemeal.additives
end
def offermealswitch
if params.has_key?(:meal_id)
@additivemeal = Meal.find(params[:meal_id])
@type = "Meal"
elsif params.has_key?(:offer_id)
@additivemeal = Offer.find(params[:offer_id])
@type = "Offer"
end
end
end
这是处理这个问题的正确方法吗?它工作得很好,但我不是shure这是轨道方式……
谢谢你的回答!
最佳答案 叹息切换到应答空间所以我至少可以添加回车并使代码不笨.
我同意fl00r的答案,但会补充说你需要实例化对象:
@type = params[:type]
@obj = @type.constantize.find(params["#{type}_id"])
@additives = @obj.additives