Question

我想要在分页表中一起显示四种类型的Rawscores。

代码如下：

@facebook_scores_today = Rawscore.where(:channel_string => "Facebook", :project => @project, :created_at.gt => Time.now.beginning_of_day)

@youtube_scores_today = Rawscore.where(:channel_string => "Youtube", :project => @project, :created_at.gt => Time.now.beginning_of_day)

@twitter_scores_today = Rawscore.where(:channel_string => "Twitter", :project => @project, :created_at.gt => Time.now.beginning_of_day)

@influence_scores_today = Rawscore.where(:channel_string => "Influence", :project => @project, :created_at.gt => Time.now.beginning_of_day)

其中Rawscore具有多个值的哈希值作为表的属性，具体取决于:channel_string。

我应该怎么做？任何可以帮助“will_paginate”或“kaminari”的宝石？

更新（这是我的Rawscore模型）

class Rawscore
  include Mongoid::Document
  include Mongoid::Timestamps::Created #for created_at field

  belongs_to :channel
  belongs_to :project
  field :values, type: Hash
  validates :values, :presence => true

end

我想在Rawscore模型中显示：值Hash的键值。

Answer 1

Kaminari可以对数组进行分页，但效率不高，因为Active Record会实例化所有检索到的记录（即如果你有10000条记录并且只想显示100条，那么内存中将有10000个AR对象）

Kaminari.paginate_array(my_array_object).page(params[:page]).per(10)

相反，您可以考虑加入查询并使用查询分页

scores_today = Rawscore.where(
  :channel_string => ["Facebook", "Youtube", "Twitter", "Influence"], 
  :project => @project, :created_at.gt => Time.now.beginning_of_day
).page(params[:page])

Answer 2

问题的答案在于使用WillPaginate :: Collection创建自己的分页结构。

这是rubydoc链接：http://rubydoc.info/github/mislav/will_paginate/frames

使用来自多个数组的属性对模型进行分页

2 个答案: