Meta.fields contains a field that is not defined on this FilterSet: ****

Question

I am using the Django filter package.

I define my filter as follows in the view

class UnitFilter(django_filters.FilterSet):
    class Meta:
        model = Unit
        fields = [
            'floor', 'number', 'building','lease','leaseterm', 
            'lease__is_active','lease__is_terminated','lease__is_renewed',]

My object model, which I filter by, is as follows

class Unit(CommonInfo):
    version = IntegerVersionField( )
    number = models.CharField(max_length=30,null=True, blank=True)
    max_occupants = models.PositiveSmallIntegerField()
    floor = models.PositiveSmallIntegerField()
    rooms = models.PositiveSmallIntegerField()
    is_disabled_access = models.BooleanField(default=False)
    balcony_quantity = models.PositiveSmallIntegerField()
    building = models.ForeignKey(Building)
    recomended_price = models.DecimalField(max_digits=7, decimal_places=2)
    _lease = None
    _leaseterm = None
    #check = models.ManyToManyField(UnitCheck, through='UnitChecklist')

    def _get_total(self):

        from conditions.models import LeaseTerm
        from lease.models import Lease

        lease_dict = Lease.objects.filter(unit_id=self.id, is_active = True , is_terminated = False).aggregate(Max('id'))
        if lease_dict['id__max']:
            lease =  lease_dict['id__max'] 
        else:  
            lease =  0

        leaseterm_dict = LeaseTerm.objects.filter(lease_id=lease, is_active = True , is_terminated = False).aggregate(Max('id'))
        if leaseterm_dict['id__max']:
            leaseterm =  leaseterm_dict['id__max'] 
        else:  
            leaseterm =  0

        self._lease = lease
        self._leaseterm = leaseterm

    @property
    def lease(self):
        if self._lease is None:
            self._get_total()
        return self._lease

    @property
    def leaseterm(self):
        if self._leaseterm is None:
            self._get_total()
        return self._leaseterm

There are 2 calculated properties in this rental and rental model

renting a property has no problem when the tenant gives me this error

Meta.fields contains a field that is not defined in this FilterSet: leaseterm

What for? Is this a bug in the django filter?

Answer 1

See for a good explanation.

queryset.filter(field_name=field_value), Django SQL-. , Python, .

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