title: ruby hours and minutes
body: <p>I need to store a time log for employees. We need to know that they spent, for example, 20 minutes working on project A and 1 hr 30 minutes working on project B.</p>
  
  <p>Before I run a migration, I'd like to understand what the best practice is for storing this sort of information. we don't need to know anything about date or time so I don't want to get into date / time calculations of duration. Just a user-entered hours and minutes. However, we will certainly have to do calculations at some point. So the employee mentioned above did a total of 1hr 50 minutes.</p>
  
  <p>I was going to create 2 integer fields. One for the hours and one for the minutes, and deal with the calculations later. Does that make sense, or am I making a mistake at the first hurdle?</p>
  
  <p>Thanks </p>