StackOverflow2013

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PODate, substraction, conditions and rendering
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copied!<p>I'm currently trying to create a method that will substract two dates. Here's what it looks like : (maturity is a futur time) </p> <pre><code> def time_remaining # If validated, return time between now and number of days from validation. if self.is_validated? return (self.maturity > Time.now) ? (self.maturity - Time.now) : 0 # If not validated, return number of days converted in time else return self.nb_days.nil? ? 0 : self.nb_days.days end end </code></pre> <p>And in my View my doing this :</p> <pre><code>distance_of_time_in_words(project.time_remaining) </code></pre> <p>This works but it isn't what I'm really trying to do, what I want is to retrieve a number of hours if the result of the substraction equals less than a day, to retrieve a number of minutes if the result of the substraction equals less than an hour and to retrieve a number of days if the result equals more than a day.</p> <p>maturity is under this format : <code>Wed, 27 Nov 2013 12:42:09 UTC +00:00</code>. Can you please tell me at least a hint about how can I do that ?</p> <p><strong>EDIT :</strong> </p> <p>I've tried something like this but it's really messy :</p> <pre><code>def time_remaining # If validated, return time between now and number of days from validation. if self.is_validated? if (self.maturity > Time.now) if ((self.maturity - Time.now)/1.day < 1) return (self.maturity - Time.now)/1.day. elsif ((self.maturity - Time.now) < 1.hour) return (self.maturity - Time.now)/1.min else return (self.maturity - Time.now) end else 0 end # If not validated, return number of days converted in time else return self.nb_days.nil? ? 0 : self.nb_days.days end end </code></pre> <p>The point is to remove the <code>distance_of_time_in_words</code> here.</p> <p><strong>Solution :</strong> Thanks to @Rafał Cieślak and the gem time_diff. Here's what I've done :</p> <pre><code> def remaining_time (project) if project.is_validated? if ((project.maturity - Time.now)/1.day >= 1) result = Time.diff(project.maturity, Time.now, '%d') return result[:diff] elsif ((project.maturity - Time.now)/1.hour > 1 && (project.maturity - Time.now)/1.hour < 24) result = Time.diff(project.maturity, Time.now, '%H') return result[:diff] elsif ((project.maturity - Time.now)/1.hour < 1) result = Time.diff(project.maturity, Time.now, '%N') return result[:diff] end else return project.nb_days.nil? ? 0 : project.nb_days.days end end </code></pre>

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