Question

我有3个型号。首先，我有一个有很多选票的选民。投票是连接选民和参赛者的联接表。但是当我试图保存他们没有保存的选票时。我的模型看起来像这样：

class Vote < ActiveRecord::Base
  belongs_to :entry
  belongs_to :voter
  attr_accessible :entry, :voter, :voter_id

class Voter < ActiveRecord::Base
  attr_accessible :email_address, :verification_code, :verified, :votes_attributes, :votes
  has_many :votes, :class_name => "Vote"
  accepts_nested_attributes_for :votes

class Entry < ActiveRecord::Base
  attr_accessible :caption, :email_address, :filename
end

然后我的表格看起来像这样：

<%= f.fields_for :votes do |builder| %>  
    <fieldset>
    <%= builder.label :votes, "Vote" %>
    <%= collection_select(:votes, :entry_id, Entry.all, :id, :caption, :prompt => 'Please select an Entry') %>
    </fieldset>     
  <% end %>

但投票并没有保存在数据库中。响应如下：

参数：{“utf8”=＆gt;“✓”，“authenticity_token”=＆gt;“x5f85viIp / KHJKQF7DotaF3MhebARWcaLDKRbcZw / lM =”，“选民”=＆gt; {“email_address”=＆gt;“sadasfd”}，“投票“=＆gt; {”entry_id“=＆gt;”3“}，”提交“=＆gt;”创建选民“}

所以出了什么问题？

Answer 1

请尝试

class Voter < ActiveRecord::Base
  attr_accessible :email_address, :verification_code, :verified, :votes
  has_many :votes, :class_name => "Vote"
  attr_accessible :votes_attributes,
  accepts_nested_attributes_for :votes

Modify vote_params in VotesController

private
def vote_params
      params.require(:vote).permit(:id, :email_address, :verification_code, :verified, votes_attributes: [:id, :name])
end

嵌套表单不保存数据

1 个答案: