ruby-on-rails – 多个记录提交而不嵌套

:resources users do 
    :resources predictions
end

当我访问users / 1 / predictions / new时,我需要创建6条预测记录,并立即将它们提交给数据库.

在我的Predictions控制器中：

before_filter :load_user

def new
  3.times { @user.predictions.build }
end

def create
  @prediction = @user.predictions.new(params[:prediction])
  if @prediction.save
    redirect_to @user,:notice => 'Prediction added'
  else
    redirect_to @user,:notice => 'Unable to add'
  end
end

def destroy
  @prediction = @user.prediction.find(params[:id])
  @prediction.destroy
  redirect_to @user,:notice => "Prediction deleted"
end

private

def load_user
  @user = current_user
end

在我的预测new.html.erb中：

<%= form_for ([@user,@user.predictions.new]) do |f| %>
<div class="fields">
    <%= f.label :position %>
    <%= f.text_field :position %>
</div>
<div class="fields">
    <%= f.label :athlete_id,'Athlete'%>
    <%= f.collection_select(:athlete_id,Athlete.all,:id,:name,:prompt => 'Select an athlete' )%>
</div>
<div class="fields">
    <%= f.label :race_id,'Race'%>
    <%= f.collection_select(:race_id,Race.upcoming,:prompt => 'Select a race' )%>
</div>
<div class="actions"><%= f.submit %></div>
<% end %>

这显示并仅提交一条记录而不是3.我想我可能必须使用：accepts_nested_attributes_for,但是我不需要同时创建和更新用户模型.现有用户将为多场比赛一次创建预测3条记录,因为这是一款奇幻体育应用.