我有这个控制器
class PeopleController < ApplicationController
def new
@person = Person.new
@person.phones.new
end
# this is the action that gets called by the form
def create
render text: person_params.inspect
# @person = Person.new(person_params)
# @person.save
# redirect_to people_path
end
def index
@person = Person.all
end
private
def person_params
params.require(:person).permit(:name, phones_attributes: [ :id, :phone_number ])
end
end
和这个视图
<%= form_for :person, url: people_path do |f| %>
<p>
<%= f.label :name %><br />
<%= f.text_field :name %>
</p>
<%= f.fields_for :phones do |f_phone| %>
<div class="field">
<p>
<%= f_phone.label :phone_number %><br />
<%= f_phone.text_field :phone_number %>
</p>
</div>
<% end %>
<p>
<%= f.submit %>
</p>
<% end %>
当我填写两个表单字段并点击"Save Person"时,我只得到{"name"=>"foo"}
——电话号码似乎消失了。
然而,当我将phones_attributes
更改为phones
时,我得到了{"name"=>"foo", "phones"=>{"phone_number"=>"123"}}
(但是这会导致创建函数出现问题。
这里怎么了?
请注意,这个问题与以下问题密切相关:accepts_nested_attributes_for:我做错了什么以及这篇帖子:https://groups.google.com/forum/#!topic/rubyonrails talk/4RF_CFChua0
您没有在控制器中定义@phones:
def new
@person = Person.new
@phones = @person.phones.new
end
终于发现了问题。在视图中应该有
<%= form_for @person, url: people_path do |f| %>
代替
<%= form_for :person, url: people_path do |f| %>
@phron已经说过了:accepts_nested_attributes_for:我做错了什么