Hi,
Can I apply filter so that in Route Step, it shows only route steps related to the declared product ?
My models:
class Route(models.Model):
product = models.ForeignKey('inventory.Product', on_delete=models.RESTRICT)
description = models.TextField(null=True, blank=True)
class RouteStep(models.Model):
route = models.ForeignKey(Route, on_delete=models.CASCADE)
operation = models.ForeignKey(Operation, on_delete=models.RESTRICT)
sequence_number = models.IntegerField(default=1)
class BillOfMaterial(models.Model):
product = models.ForeignKey('inventory.Product', on_delete=models.RESTRICT, limit_choices_to={'is_active': True},)
quantity = models.DecimalField(max_digits=10, decimal_places=2, default=1)
class BillOfMaterialItem(models.Model):
bill_of_material = models.ForeignKey(BillOfMaterial, on_delete=models.CASCADE)
material = models.ForeignKey('inventory.Material', on_delete=models.RESTRICT)
quantity = models.DecimalField(max_digits=10, decimal_places=2, default=1)
route_step = models.ForeignKey(RouteStep, on_delete=models.RESTRICT)
Thank you!
Yes, this can be done. I’m not sure how far down the rabbit hole you’ll need to go.
<conjecture>
You’ll probably need to do something like creating a custom formset for the InlineModelAdmin class, so that it is defined to use a custom form. This custom form will need to define the Route Step field with a custom queryset, based upon the product field of the BillOfMaterial model assigned as the instance attribute of the formset.
</conjecture>
(This is an off-the-cuff idea that I hope points you in the right direction. Otherwise, you’re getting into areas where I don’t think it’s appropriate to be using the admin. You’re likely going to find it easier and cleaner to be doing this in your own view.)
I tried below code but it doesn’t work.
My expectation is that route step field shows only Assembling and QC which are included in the Laptop’s route.
Please help me if I made a mistake!
class BillOfMaterialItemFormset(BaseInlineFormSet):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
if self.forms:
instance = kwargs['instance']
if instance.pk:
product = instance.product
self.forms[0].base_fields['route_step'].queryset = RouteStep.objects.filter(
route__product=product
)
print(self.forms[0].base_fields['route_step'].queryset)
class BillOfMaterialItemInline(TabularInline):
model = BillOfMaterialItem
formset = BillOfMaterialItemFormset
extra = 0
Thank you!!
