How to track the time at which one user? With Ruby on Rails

Question

I have a Rails application that uses Devise to authenticate users, but I want to track time for users online on the platform. I would like to have a column in the user table that saves online time for this user (hours, minutes ..). For example, one user was online 2 hours in total, another user 15 minutes ...

Is there any gem or devise method for this function?

Thanks in advance.

Answer 1

Since it DEVICEstores last_sign_in_at, as soon as the user logs into the account and becomes online.

You can do something like this.

Add a table migrationto modify the user table and add a field,total_online_time

rails g migration add_total_online_time_to_users total_online_time:Float

Add a test call before the action of your application controller to verify user actions:

before_action :set_online_time, if: proc { user_signed_in? }

In this method I will get last_sign_in_at, and since I have the current time, I get the difference of these times and save in DBminutes and seconds.

Again, if he logs in, I will add this time in the old time.

I am currently saving minutes and seconds. Since I can not directly add twice.

EDIT:

, , , . .

def set_online_time

  start_time = current_user.last_sign_in_at.to_time;
  end_time = Time.now;

  if(start_time && end_time)_
      minutes = time_diff(start_time, end_time)
      if(current_user.total_online_time)
        minutes = current_user.total_online_time + minutes
      current_user.update_attribute(:total_online_time, minutes)
  end  

end

HEre - :

private


def time_diff(start_time, end_time)
    (start_time -  end_time) / 60
end

DB HH:MM:SS

,

Time.at(seconds).utc.strftime("%H:%M:%S")

, Time.at((current_user.total_online_time) * 60).utc.strftime("%H:%M:%S") .

:

time1 = Time.now   => 2017-01-27 18:01:42 +0530

time2= Time.now - 4.hours  => 2017-01-27 14:02:02 +0530

minutes = time_diff(time1,time2)  => 239.66325946553334

Time.at((minutes) * 60).utc.strftime("%H:%M:%S") => "03:59:39"

So, "03:59:39" is the online time.

:

1) - .

2) ,

minutes = time_diff(start_time, end_time)
current_user.update_attribute(:total_online_time, minutes)

-.

Answer 2

: last_login_time hours_logged. , , last_login_time. , , .

. QA .