CODEWITHSUNDEEP
pythondjango
beasyx
beasyx

Reputation: 152

How to get total time from a start and finish time using django TimeField?

So lets say I have to TimeField's in my model. One for start and one for finish. How would I get a total time from that? Basically I have this:

class Job(models.Model):
name = models.CharField(max_length=30)
date = models.DateField()
time_started = models.DateTimeField(blank=True, null=True)
time_finished = models.DateTimeField(blank=True, null=True)

def __str__(self):
    return self.name

I want to do something like a model method or a view function maybe like this:

 def get_total_time(self):
        return time_finished - time_started

But this isn't working.

Upvotes: 1

Views: 676

Answers (1)

willeM_ Van Onsem
willeM_ Van Onsem

Reputation: 477676

You can add a property that calculates the duration, so the difference between time_finished and time_started. However, you should check if both are not None. If one (or both) are None, you can for example return None:

class Job(models.Model):
    name = models.CharField(max_length=30)
    date = models.DateField()
    time_started = models.DateTimeField(blank=True, null=True)
    time_finished = models.DateTimeField(blank=True, null=True)

    @property
    def duration(self):
        if self.time_finished is not None and self.time_started is not None:
            return self.time_finished - self.time_started

    def __str__(self):
        return self.name

Upvotes: 2

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