我想为2个不同的模型编写数据,这些模型彼此相关:
class Post < ActiveRecord::Base
has_many :roads
accepts_nested_attributes_for :roads, :allow_destroy => true
end
class Road < ActiveRecord::Base
belongs_to :post
end
当然de roads table有一个&#34; post_id列&#34;。我在后视图中的form_for看起来像这样
<%= form_for @post do |f| %>
<div class="form-group">
<%= f.label :Tu_Nombre %>
<%= f.text_field :creador, class: "form-control" %>
</div>
<div class="form-group">
<%= f.label :año %> (Cuando fue tu experiencia?)
<%= f.text_field :año, class: "form-control" %>
</div>
<div class="form-group">
<%= fields_for :roads do |r| %>
<%= r.label :principio %> (desde?)
<%= r.text_field :principio, class: "form-control" %>
<%= r.label :final %> (hasta?)
<%= r.text_field :final, class: "form-control" %>
<% end %>
</div>
<div class="form-group">
<%= f.label :historia %> (Cuentanos la historia de tu viaje!)
<%= f.text_area :historia, class: "form-control", size: "50x15" %>
</div>
<div>
<%= f.submit class: "btn btn-success" %>
</div>
<% end %>
最后我的posts_controller创建方法
def create
@post = Post.new(post_params)
if @post.save
redirect_to @post, notice: 'Post was successfully created.'
else
render :new
end
end
私人
def post_params
params.require(:post).permit(:historia, roads_attributes: [:pricipio, :final, :post_id])
end
提交帖子,如果我检查控制台,所有的帖子属性都已保存,但是道路的属性没有。我如何只为这两个模型使用一个表单两个make记录,并且post_id被注册,以便我可以关联表格?
非常感谢!!
答案 0 :(得分:0)
请阅读Rails指南的表单助手章节中的Nested Forms。您可以使用fields_for
为roads
构建嵌套属性表单,并允许嵌套属性(如示例)。以下是rails guide的示例,您可以尝试自己解决。
_form.html.erb
<%= form_for @person do |f| %>
Addresses:
<ul>
<%= f.fields_for :addresses do |addresses_form| %>
<li>
<%= addresses_form.label :kind %>
<%= addresses_form.text_field :kind %>
<%= addresses_form.label :street %>
<%= addresses_form.text_field :street %>
...
</li>
<% end %>
</ul>
<% end %>
允许在people_controller.rb中嵌套属性
def person_params
params.require(:person).permit(:name, addresses_attributes: [:id, :kind, :street])
end
答案 1 :(得分:0)
将您的fields_for附加到父表单构建器,如下所示:
<%= f.fields_for :roads do |r| %>
答案 2 :(得分:0)
更新您的posts_controller new
方法以包含.build
def new
@post = Post.new
@post.roads.build
end