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Editorial Team
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Asked: 2026-06-17T06:38:25+00:00

I have a simple model that tracks work leave requests: class LeaveRequest(models.Model): employee =

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I have a simple model that tracks work leave requests:

class LeaveRequest(models.Model):
    employee = models.ForeignKey(UserProfile)
    supervisor = models.ForeignKey(UserProfile, related_name='+', blank=False, null=False)
    submit_date = models.DateField(("Date"), default=datetime.date.today)
    leave_type = models.CharField(max_length=64, choices=TYPE_CHOICES)
    start_date = models.DateField(("Date"))
    return_date = models.DateField(("Date"))
    total_days = models.IntegerField()
    notes = models.TextField(max_length=1000)

    def __unicode__ (self):
        return u'%s %s' % (self.employee, self.submit_date)

        class Admin: 
                pass

        class Meta:
                ordering = ['-submit_date']

In the view I need a function to calculate the number of days requested. Secondarily, I’ll need a method to count only weekdays, but for now I’ve got the following:

def leave_screen(request, id):
    records = LeaveRequest.objects.filter(employee=id)
    total_days = LeaveRequest.return_date - LeaveRequest.start_date
    tpl = 'vacation/leave_request.html'
    return render_to_response(tpl, {'records': records })

which produces a attribute error

type object 'LeaveRequest' has no attribute 'return_date

any suggestions?

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1 Answer

  1. Editorial Team

    I wouldn’t have ‘total_days’ as a field in the LeaveRequest class, but rather as a property.

    class LeaveRequest(models.Model):
    (other fields)

    @property
    def total_days(self):
        oneday = datetime.timedelta(days=1)
        dt = self.start_date
        total_days = 0
        while(dt <= self.return_date):
            if not dt.isoweekday() in (6, 7):
                total_days += 1
            dt += oneday
        return totaldays

# view function
def leave_screen(request, id):
    # get leave request by id
    leavereq = LeaveRequest.objects.get(id=id)
    return render_to_response("vacation/leave_request.html", {"leavereq": leavereq})

# template code
...
<body>
    {{ leavereq.total_days }}
</body>
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