计算城市大使

dashi.rb

a = ["哈尔滨","广州", "拉萨", "天津", "成都", "郑州", "沈阳", "宁波"]
b = []
cities = City.where(:name_chn.in => a).each do |c|
  hash = {}
  user = User.within_circle('location.loc' => c.to_a).desc(:referring_count).first
  if user.nil?
    hash[:error] = nil
    b << hash
    return
  end
  count = 0
  user.referring.each do |r|
    if r.created_at >= '2013-11-30 00:00:00'
      count += 1
    end
  end
  hash[:city] = c.name_chn
  hash[:nickname] = user.nickname
  hash[:count] = count
  b << hash
end