我一直在努力集思广益，研究如何计算用户响应率（对收到的消息的响应百分比）和时间（用户对消息的响应速度）。此信息将显示在用户个人资料中。我想不出一个适用于此的公式，并且没有看到任何关于它的其他帖子。
例如，用户A的回复率为85％，响应时间为3天。攻击它的正确方法是什么？
消息模型：
attr_accessible :subject, :body, :sender_id, :recipient_id, :read_at,:sender_deleted,:recipient_deleted
validates_presence_of :subject, :message => "Please enter message title"
has_many :notifications, as: :event
scope :unread, -> {where('read_at IS NULL')}
belongs_to :sender,
:class_name => 'User',
:foreign_key => 'sender_id'
belongs_to :recipient,
:class_name => 'User',
:foreign_key => 'recipient_id'
# Based on if a message has been read by it's recipient returns true or false.
def read?
self.read_at.nil? ? false : true
end
def self.received_by(user)
where(:recipient_id => user.id)
end
def self.not_recipient_deleted
where("recipient_deleted = ?", false)
end
def self.sent_by(user)
Message.where(:sender_id => user.id)
end
控制器：
before_filter :set_user
def index
@messages = Message.scoped
@message = Message.new
if params[:mailbox] == "sent"
@messages = @user.sent_messages.paginate :per_page => 10, :page => params[:page], :order => "created_at DESC"
elsif params[:mailbox] == "inbox"
@messages = @user.received_messages.paginate :per_page => 10, :page => params[:page], :order => "created_at DESC"
#elsif params[:mailbox] == "archived"
# @messages = @user.archived_messages
end
if params[:mailbox] == "unread"
@messages = @user.unread_messages.paginate :per_page => 10, :page => params[:page], :order => "created_at DESC"
end
if params[:mailbox] == "trash"
@messages = @user.deleted_messages.paginate :per_page => 10, :page => params[:page], :order => "created_at DESC"
end
end
def new
@message = Message.new
@message.conversation_id = params[:conversation_id]
end
def create
@message = Message.new(params[:message])
@message.sender_id = @user.id
if @message.save
flash[:notice] = "Message has been sent"
redirect_to user_messages_path(current_user, :mailbox=>:inbox)
else
render :action => :new
end
end
def show
@reply_message = Message.new
@message = Message.find(params[:id])
if @message.recipient == current_user
UserMessageWorker.perform_async(@message.id, current_user.id)
end
@message.readingmessage if @message.recipient == current_user
end
def reply
@reply_message = Message.new
@message = Message.new
@message.conversation_id = params[:conversation_id]
end
def destroy
@message = Message.find(params[:id])
@message.destroy
flash[:notice] = "Successfully deleted message."
redirect_to user_messages_path(@user, @messages)
end
def delete_multiple
if params[:delete]
params[:delete].each { |id|
@message = Message.find(id)
@message.mark_message_deleted(@message.id,@user.id) unless @message.nil?
}
flash[:notice] = "Messages deleted"
end
redirect_to user_messages_path(@user, @messages)
end
def update
@message = Message.new
if params[:reply_to]
@reply_to = User.find_by_id(params[:reply_to])
unless @reply_to.nil?
@message.recipient_id = @reply_to.id
end
end
end
private
def set_user
@user = current_user
end
end
日志：
2014-02-05T17:08:16Z 33906 TID-zt6cxk WARN: {"retry"=>true, "queue"=>"default", "class"=>"UserMessageWorker", "args"=>[159, 2], "jid"=>"f502221628588feaa5efa7d3", "enqueued_at"=>1391619720.3566332, "error_message"=>"undefined method `messages' for #<User:0x00000101edb0a0>", "error_class"=>"NoMethodError", "failed_at"=>"2014-02-05T17:02:00Z", "retry_count"=>4, "retried_at"=>2014-02-05 17:08:16 UTC}
2014-02-05T17:08:16Z 33906 TID-zt6cxk WARN: undefined method `messages' for #<User:0x00000101edb0a0>
2014-02-05T17:08:16Z 33906 TID-zt6cxk WARN: /Users/.rvm/gems/ruby-2.0.0-p353/gems/activemodel-4.0.0.rc1/lib/active_model/attribute_methods.rb:436:in `method_missing'
/Users/.rvm/gems/ruby-2.0.0-p353/gems/activerecord-4.0.0.rc1/lib/active_record/attribute_methods.rb:131:in `method_missing'
/Users/dating/app/workers/user_message_worker.rb:8:in `perform'
/Users/.rvm/gems/ruby-2.0.0-p353/gems/sidekiq-2.17.2/lib/sidekiq/processor.rb:49:in `block (3 levels) in process'
/Users/.rvm/gems/ruby-2.0.0-p353/gems/sidekiq-2.17.2/lib/sidekiq/middleware/chain.rb:122:in `call'
/Users/.rvm/gems/ruby-2.0.0-p353/gems/sidekiq-2.17.2/lib/sidekiq/middleware/chain.rb:122:in `block in invoke'
/Users/.rvm/gems/ruby-2.0.0-p353/gems/sidekiq-2.17.2/lib/sidekiq/middleware/server/active_record.rb:6:in `call'
/Users/.rvm/gems/ruby-2.0.0-p353/gems/sidekiq-2.17.2/lib/sidekiq/middleware/chain.rb:124:in `block in invoke'
/Users/.rvm/gems/ruby-2.0.0-p353/gems/sidekiq-2.17.2/lib/sidekiq/middleware/server/retry_jobs.rb:62:in `call'
/Users/.rvm/gems/ruby-2.0.0-p353/gems/sidekiq-2.17.2/lib/sidekiq/middleware/chain.rb:124:in `block in invoke'
/Users/.rvm/gems/ruby-2.0.0-p353/gems/sidekiq-2.17.2/lib/sidekiq/middleware/server/logging.rb:11:in `block in call'
/Users/.rvm/gems/ruby-2.0.0-p353/gems/sidekiq-2.17.2/lib/sidekiq/logging.rb:22:in `with_context'
/Users/.rvm/gems/ruby-2.0.0-p353/gems/sidekiq-2.17.2/lib/sidekiq/middleware/server/logging.rb:7:in `call'
/Users/.rvm/gems/ruby-2.0.0-p353/gems/sidekiq-2.17.2/lib/sidekiq/middleware/chain.rb:124:in `block in invoke'
/Users/.rvm/gems/ruby-2.0.0-p353/gems/sidekiq-2.17.2/lib/sidekiq/middleware/chain.rb:127:in `call'
/Users/.rvm/gems/ruby-2.0.0-p353/gems/sidekiq-2.17.2/lib/sidekiq/middleware/chain.rb:127:in `invoke'
/Users/.rvm/gems/ruby-2.0.0-p353/gems/sidekiq-2.17.2/lib/sidekiq/processor.rb:48:in `block (2 levels) in process'
/Users/.rvm/gems/ruby-2.0.0-p353/gems/sidekiq-2.17.2/lib/sidekiq/processor.rb:105:in `stats'
/Users/.rvm/gems/ruby-2.0.0-p353/gems/sidekiq-2.17.2/lib/sidekiq/processor.rb:47:in `block in process'
/Users/.rvm/gems/ruby-2.0.0-p353/gems/sidekiq-2.17.2/lib/sidekiq/processor.rb:86:in `do_defer'
/Users/.rvm/gems/ruby-2.0.0-p353/gems/sidekiq-2.17.2/lib/sidekiq/processor.rb:37:in `process'
/Users/.rvm/gems/ruby-2.0.0-p353/gems/celluloid-0.15.2/lib/celluloid/calls.rb:25:in `public_send'
/Users/.rvm/gems/ruby-2.0.0-p353/gems/celluloid-0.15.2/lib/celluloid/calls.rb:25:in `dispatch'
/Users/.rvm/gems/ruby-2.0.0-p353/gems/celluloid-0.15.2/lib/celluloid/calls.rb:122:in `dispatch'
/Users/.rvm/gems/ruby-2.0.0-p353/gems/celluloid-0.15.2/lib/celluloid/actor.rb:322:in `block in handle_message'
/Users/.rvm/gems/ruby-2.0.0-p353/gems/celluloid-0.15.2/lib/celluloid/actor.rb:416:in `block in task'
/Users/.rvm/gems/ruby-2.0.0-p353/gems/celluloid-0.15.2/lib/celluloid/tasks.rb:55:in `block in initialize'
/Users/.rvm/gems/ruby-2.0.0-p353/gems/celluloid-0.15.2/lib/celluloid/tasks/task_fiber.rb:13:in `block in create'
答案 0 :(得分：5)
我假设您要将这些值存储在User表中？我会将这些列称为average_response_time和response_rate。您还需要向User表添加一列，该列是发送消息和查看消息之间的所有时间的总和。我称之为response_total。
然后把它全部放在后台工作......或者不是，但我愿意。我喜欢Sidekiq，并且有很棒的关于它的转播here。
在消息控制器中
def show
@message = Message.find(params[:id])
if @message.recipient == current_user
UserMessageWorker.perform_async(@message.id, current_user.id)
end
end
然后在app / workers / user_message_worker.rb
中class UserMessageWorker
include Sidekiq::Worker
def perform(message_id, user_id)
message = Message.find(message_id)
user = User.find(user_id)
message.read_at = Time.now
old_msg_count = user.messages.count
if message.save
msg_response_time = message.read_at - message.created_at
response_rate = (user.messages.where("read_at IS NOT NULL").count)/(old_msg_count + 1)
response_time = ((user.average_response_time * old_msg_count)+msg_response_time)/(old_msg_count + 1)
user.update_attributes(:response_rate => response_rate, :average_response_time => average_response_time )
end
end
end
我很确定response_time的数学是正确的，但你应该仔细检查一下。此外，根据您的需要准确度，您可能希望以分钟或秒（或小时或天）存储response_total，因此数字不会很大。