Ruby on Rails - belongs_to添加关系

Question

这些是我的模型

class Apartment
belongs_to :house
end
class House
has_many :apartments
end

apartment_controller;

def index
    @apartments = Appartment.all
end

公寓索引视图

.span9
  #container
    - @appartments.each do |apartment|
      .item{:class => apartment.features_to_html_class }
        %article.info.t_xs
          .article-base
            %section
              .span3
                %h2 #{link_to apartment.name, appartment_path(apartment)}
                %p 
                  = raw truncate(apartment.property_description, :length => 375, :omission => '...')
                %footer
                  %ul.meta
                    %li.comments
                      #{apartment.count_ratings} 
                      = t('apartment.details.reviews')
                    %li.notes
                      #{apartment.guests}
                      = t('apartment.details.persons')
                    %li.notes
                      #{apartment.bedrooms}
                      = t('apartment.details.bedrooms')
                    %li.notes
                      #{apartment.bathrooms}
                      = t('apartment.details.bathrooms')
            %ul.thumbnails
              %li.span5
                = image_tag(apartment.attachments.last.file.url, :class => 'thumbnail')
              - apartment.attachments.limit(4).each do |a|
                %li.span1
                  %a{:href => "#"}
                  = image_tag(a.file.url(:thumb), :class => "thumbnail")
            .span8
              %footer
                #more
                  #{link_to t('apartments.summary.button'), appartment_path(apartment), :class => 'btn btn-primary'}

我从DB得到所有的公寓。但是现在我想在公寓摘要中添加一个指向房屋的链接（belongs_to）。我该怎么做...谢谢。。雷姆科

Answer 1

你试过吗 link_to "房子"，house_path（公寓.房子） ？

Answer 2

试试这个：

<%= link_to 'House', house_path(apartment.house) %> 

或

<%= link_to 'House', house_url(apartment.house) %>

问候！

Answer 3

你得到了数据库中的所有公寓。现在，运行 sql 以获取apartments对象。
然后迭代每个公寓，并通过关联将其链接到房屋。

这是按如下方式完成的：

def index
        @apartments = Appartment.all
    @apartments.each do |apartment|
       #this is giving you the link to house via association defined.
         apartment.house 
       #this is giving you the value of the field say `house_name` of house table that is linked to apartment.
         @house_name = apartment.house.house_name
      .
      .
      .
    end
end