Class: FayeUserOnlineTime

Inherits:
ActiveRecord::Base
  • Object
show all
Defined in:
app/models/faye_user_online_time.rb

Constant Summary collapse

TIME2013 = 
Time.parse("20130101")
TimeFormat = 
"%Y%m%d%H%M%S"

Instance Method Summary collapse

Instance Method Details

#data ⇒ Object 



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# File 'app/models/faye_user_online_time.rb', line 50

def data
  @data ||= (JSON.parse(online_time.online_times) rescue {})
end

#online_time ⇒ Object 



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# File 'app/models/faye_user_online_time.rb', line 57

def online_time; self end

#resave! ⇒ Object 



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# File 'app/models/faye_user_online_time.rb', line 53

def resave!
  online_time.update_attributes! :online_times => data.to_json
end

#spend_key ⇒ Object 



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# File 'app/models/faye_user_online_time.rb', line 25

def spend_key; "#{@channel_name}_spended"; end

#spend_time(channel_name) ⇒ Object 



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# File 'app/models/faye_user_online_time.rb', line 8

def spend_time channel_name; @channel_name = channel_name; data[spend_key] end

#spend_time_in_realtime(channel_name) ⇒ Object 



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# File 'app/models/faye_user_online_time.rb', line 27

def spend_time_in_realtime channel_name
  _old_spend_time = self.spend_time(channel_name).to_i

  # 计时为0。 用户打开多个浏览器，在完成课时时其他页面没有关掉，导致faye_online_time不能关闭计时，所以无法计算spend_time
  _new_spend_time = 0
  if _start_time = self.start_time(channel_name)
    # 兼容 没访问页面前  计时的start_time还没有开始
    _new_spend_time = _start_time.blank? ? 0 : (Time.now - Time.parse(_start_time))
  end

  (_old_spend_time + _new_spend_time).round(0)
end

#start(channel_name) ⇒ Object 



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# File 'app/models/faye_user_online_time.rb', line 19

def start channel_name
  @channel_name = channel_name
  data[start_key] = Time.now.strftime(TimeFormat)
  resave!
end

#start?(channel_name) ⇒ Boolean

只有两种状态，不管一个用户有多少个连接 1, 没开始: 设置started_at为当前值 2, 关闭所有连接: 去除started_at，更新spended 再添加一个连接: 在调用接口方实现

Returns:

  • (Boolean) 


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# File 'app/models/faye_user_online_time.rb', line 15

def start? channel_name
  @channel_name = channel_name
  !!data[start_key]
end

#start_key ⇒ Object 



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# File 'app/models/faye_user_online_time.rb', line 24

def start_key; "#{@channel_name}_started_at"; end

#start_time(channel_name) ⇒ Object 



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# File 'app/models/faye_user_online_time.rb', line 9

def start_time channel_name; @channel_name = channel_name; data[start_key] end

#stop(channel_name) ⇒ Object 



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# File 'app/models/faye_user_online_time.rb', line 40

def stop channel_name
  @channel_name = channel_name
  if data[start_key]
    data[spend_key] ||= 0
    data[spend_key] += (Time.now - Time.parse(data[start_key])).to_i
    data.delete start_key
    resave!
  end
end

#uid ⇒ Object 



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# File 'app/models/faye_user_online_time.rb', line 58

def uid; self.user_id; end