如何通过关系访问 has_many 中的属性？
我如何在这里访问商店名称？@deal 实例可以完美访问商品名称，但是当我尝试访问商店名称时，它给了我
no method error 'stores'
如何获取商店实例来访问商店名称？这是代码。提前谢谢您
控制器
def show
unless session[:city_id].nil? || session[:city_id].blank?
@city = City.find(session[:city_id])
@[email protected]
@[email protected]
end
视图/展示
<% @deal.each do |deal| %>
<%=deal.item_name %>
<%end%>
<%[email protected]_name %>
模型
class Store < ActiveRecord::Base
has_many :deals ,:through =>:store_deals
has_many :store_deals
end
class Deal < ActiveRecord::Base
has_many :stores ,:through =>:store_deals
has_many :store_deals
end
class StoreDeal < ActiveRecord::Base
belongs_to :store
belongs_to :deal
end
How do i access store name here?@deal instance can access perfectly item name,but when i try to access store name it gives me
no method error 'stores'
How do i get store instance to access store name?Here is the code.Thank you in advance
controller
def show
unless session[:city_id].nil? || session[:city_id].blank?
@city = City.find(session[:city_id])
@[email protected]
@[email protected]
end
view/show
<% @deal.each do |deal| %>
<%=deal.item_name %>
<%end%>
<%[email protected]_name %>
models
class Store < ActiveRecord::Base
has_many :deals ,:through =>:store_deals
has_many :store_deals
end
class Deal < ActiveRecord::Base
has_many :stores ,:through =>:store_deals
has_many :store_deals
end
class StoreDeal < ActiveRecord::Base
belongs_to :store
belongs_to :deal
end
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@deal 很可能是一系列交易。 @city.deals 意味着您可以在每个城市有多个交易。 时，这会导致问题：
当您尝试执行以下操作
@deal is most likely an array of deals. @city.deals implies you could have multiple deals per city. This wil cause a problem when you try to do
try something like: