unsupported operand type(s) for -: 'NoneType' and 'datetime.datetime'
0
is giving this error, but before it was not, I do not know what happened
Model.py
class MovRotativo(models.Model):
checkin = models.DateTimeField(auto_now=False, null=False, blank=False)
checkout = models.DateTimeField(auto_now=False, null=True, blank=True)
valor_hora = models.DecimalField(max_digits=5, decimal_places=2)
veiculo = models.ForeignKey(Veiculo, on_delete=models.CASCADE)
pago = models.BooleanField(default=False)
def horas_total(self):
return math.ceil((self.checkout - self.checkin).total_seconds() / 3600)
def total(self):
return self.valor_hora * self.horas_total()
def __str__(self):
return self.veiculo.placa
views.py
@login_required
def movrotativos_novo(request):
form = MovRotativoForm(request.POST or None)
if form.is_valid():
form.save()
return redirect('core_lista_movrotativos')
python django
edited Nov 22 '18 at 15:11
Risadinha
9,30115562
asked Nov 22 '18 at 15:03
Mauricio KalfelzMauricio Kalfelz
288
add a comment |
0
is giving this error, but before it was not, I do not know what happened
Model.py
class MovRotativo(models.Model):
checkin = models.DateTimeField(auto_now=False, null=False, blank=False)
checkout = models.DateTimeField(auto_now=False, null=True, blank=True)
valor_hora = models.DecimalField(max_digits=5, decimal_places=2)
veiculo = models.ForeignKey(Veiculo, on_delete=models.CASCADE)
pago = models.BooleanField(default=False)
def horas_total(self):
return math.ceil((self.checkout - self.checkin).total_seconds() / 3600)
def total(self):
return self.valor_hora * self.horas_total()
def __str__(self):
return self.veiculo.placa
views.py
@login_required
def movrotativos_novo(request):
form = MovRotativoForm(request.POST or None)
if form.is_valid():
form.save()
return redirect('core_lista_movrotativos')
python django
edited Nov 22 '18 at 15:11
Risadinha
9,30115562
asked Nov 22 '18 at 15:03
Mauricio KalfelzMauricio Kalfelz
288
Post the full Traceback error so the specific line can be isolated.
– berkelem
Nov 22 '18 at 15:10
add a comment |
0
0
0
is giving this error, but before it was not, I do not know what happened
Model.py
class MovRotativo(models.Model):
checkin = models.DateTimeField(auto_now=False, null=False, blank=False)
checkout = models.DateTimeField(auto_now=False, null=True, blank=True)
valor_hora = models.DecimalField(max_digits=5, decimal_places=2)
veiculo = models.ForeignKey(Veiculo, on_delete=models.CASCADE)
pago = models.BooleanField(default=False)
def horas_total(self):
return math.ceil((self.checkout - self.checkin).total_seconds() / 3600)
def total(self):
return self.valor_hora * self.horas_total()
def __str__(self):
return self.veiculo.placa
views.py
@login_required
def movrotativos_novo(request):
form = MovRotativoForm(request.POST or None)
if form.is_valid():
form.save()
return redirect('core_lista_movrotativos')
python django
edited Nov 22 '18 at 15:11
Risadinha
9,30115562
asked Nov 22 '18 at 15:03
Mauricio KalfelzMauricio Kalfelz
288
is giving this error, but before it was not, I do not know what happened
Model.py
class MovRotativo(models.Model):
checkin = models.DateTimeField(auto_now=False, null=False, blank=False)
checkout = models.DateTimeField(auto_now=False, null=True, blank=True)
valor_hora = models.DecimalField(max_digits=5, decimal_places=2)
veiculo = models.ForeignKey(Veiculo, on_delete=models.CASCADE)
pago = models.BooleanField(default=False)
def horas_total(self):
return math.ceil((self.checkout - self.checkin).total_seconds() / 3600)
def total(self):
return self.valor_hora * self.horas_total()
def __str__(self):
return self.veiculo.placa
views.py
@login_required
def movrotativos_novo(request):
form = MovRotativoForm(request.POST or None)
if form.is_valid():
form.save()
return redirect('core_lista_movrotativos')
python django
python django
edited Nov 22 '18 at 15:11
Risadinha
9,30115562
asked Nov 22 '18 at 15:03
Mauricio KalfelzMauricio Kalfelz
288
edited Nov 22 '18 at 15:11
Risadinha
9,30115562
asked Nov 22 '18 at 15:03
Mauricio KalfelzMauricio Kalfelz
288
edited Nov 22 '18 at 15:11
Risadinha
9,30115562
edited Nov 22 '18 at 15:11
Risadinha
9,30115562
edited Nov 22 '18 at 15:11
Risadinha
9,30115562
9,30115562
asked Nov 22 '18 at 15:03
Mauricio KalfelzMauricio Kalfelz
288
asked Nov 22 '18 at 15:03
Mauricio KalfelzMauricio Kalfelz
288
asked Nov 22 '18 at 15:03
Mauricio KalfelzMauricio Kalfelz
288
288
Post the full Traceback error so the specific line can be isolated.
– berkelem
Nov 22 '18 at 15:10
add a comment |
Post the full Traceback error so the specific line can be isolated.
– berkelem
Nov 22 '18 at 15:10
Post the full Traceback error so the specific line can be isolated.
– berkelem
Nov 22 '18 at 15:10
Post the full Traceback error so the specific line can be isolated.
– berkelem
Nov 22 '18 at 15:10
add a comment |
1 Answer
1
active
oldest
votes
1
Note that the checkout field allows null values. I'm guessing the error is raised on the horas_total method for records with null in the checkout field.
The reason this error wasn't raised previously is probably that there weren't any records missing the checkout field.
Edit: As for a solution, you can enforce the checkout field to have a value. Alternatively you can check for None:
def horas_total(self):
if self.checkout is None:
# handle case where there's no value for checkout
return math.ceil((self.checkout - self.checkin).total_seconds() / 3600)
answered Nov 22 '18 at 15:05
andersourceandersource
51418
You could add the specific code to illustrate where to check for None.
– Risadinha
Nov 22 '18 at 15:13
def horas_total(self): if self.checkout is None: pass else: return math.ceil((self.checkout - self.checkin).total_seconds() / 3600).
– Mauricio Kalfelz
Nov 23 '18 at 15:34
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
1
Note that the checkout field allows null values. I'm guessing the error is raised on the horas_total method for records with null in the checkout field.
The reason this error wasn't raised previously is probably that there weren't any records missing the checkout field.
Edit: As for a solution, you can enforce the checkout field to have a value. Alternatively you can check for None:
def horas_total(self):
if self.checkout is None:
# handle case where there's no value for checkout
return math.ceil((self.checkout - self.checkin).total_seconds() / 3600)
answered Nov 22 '18 at 15:05
andersourceandersource
51418
You could add the specific code to illustrate where to check for None.
– Risadinha
Nov 22 '18 at 15:13
def horas_total(self): if self.checkout is None: pass else: return math.ceil((self.checkout - self.checkin).total_seconds() / 3600).
– Mauricio Kalfelz
Nov 23 '18 at 15:34
add a comment |
1
Note that the checkout field allows null values. I'm guessing the error is raised on the horas_total method for records with null in the checkout field.
The reason this error wasn't raised previously is probably that there weren't any records missing the checkout field.
Edit: As for a solution, you can enforce the checkout field to have a value. Alternatively you can check for None:
def horas_total(self):
if self.checkout is None:
# handle case where there's no value for checkout
return math.ceil((self.checkout - self.checkin).total_seconds() / 3600)
answered Nov 22 '18 at 15:05
andersourceandersource
51418
You could add the specific code to illustrate where to check for None.
– Risadinha
Nov 22 '18 at 15:13
def horas_total(self): if self.checkout is None: pass else: return math.ceil((self.checkout - self.checkin).total_seconds() / 3600).
– Mauricio Kalfelz
Nov 23 '18 at 15:34
add a comment |
1
1
1
Note that the checkout field allows null values. I'm guessing the error is raised on the horas_total method for records with null in the checkout field.
The reason this error wasn't raised previously is probably that there weren't any records missing the checkout field.
Edit: As for a solution, you can enforce the checkout field to have a value. Alternatively you can check for None:
def horas_total(self):
if self.checkout is None:
# handle case where there's no value for checkout
return math.ceil((self.checkout - self.checkin).total_seconds() / 3600)
answered Nov 22 '18 at 15:05
andersourceandersource
51418
Note that the checkout field allows null values. I'm guessing the error is raised on the horas_total method for records with null in the checkout field.
The reason this error wasn't raised previously is probably that there weren't any records missing the checkout field.
Edit: As for a solution, you can enforce the checkout field to have a value. Alternatively you can check for None:
def horas_total(self):
if self.checkout is None:
# handle case where there's no value for checkout
return math.ceil((self.checkout - self.checkin).total_seconds() / 3600)
answered Nov 22 '18 at 15:05
andersourceandersource
51418
edited Nov 22 '18 at 15:16
answered Nov 22 '18 at 15:05
andersourceandersource
51418
answered Nov 22 '18 at 15:05
andersourceandersource
51418
answered Nov 22 '18 at 15:05
andersourceandersource
51418
51418
You could add the specific code to illustrate where to check for None.
– Risadinha
Nov 22 '18 at 15:13
def horas_total(self): if self.checkout is None: pass else: return math.ceil((self.checkout - self.checkin).total_seconds() / 3600).
– Mauricio Kalfelz
Nov 23 '18 at 15:34
add a comment |
You could add the specific code to illustrate where to check for None.
– Risadinha
Nov 22 '18 at 15:13
def horas_total(self): if self.checkout is None: pass else: return math.ceil((self.checkout - self.checkin).total_seconds() / 3600).
– Mauricio Kalfelz
Nov 23 '18 at 15:34
You could add the specific code to illustrate where to check for None.
– Risadinha
Nov 22 '18 at 15:13
You could add the specific code to illustrate where to check for None.
– Risadinha
Nov 22 '18 at 15:13
def horas_total(self): if self.checkout is None: pass else: return math.ceil((self.checkout - self.checkin).total_seconds() / 3600).
– Mauricio Kalfelz
Nov 23 '18 at 15:34
def horas_total(self): if self.checkout is None: pass else: return math.ceil((self.checkout - self.checkin).total_seconds() / 3600).
– Mauricio Kalfelz
Nov 23 '18 at 15:34
add a comment |
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Post the full Traceback error so the specific line can be isolated.
– berkelem
Nov 22 '18 at 15:10