[Answered ]-Django-filter: How to get the choices from related model?

by

1👍

Use ChoiceFilter field instead of ModelChoiceFilter

class PeriodFilter(django_filters.rest_framework.FilterSet):
  type = django_filters.ChoiceFilter(choices=Period.PeriodType.choices, field_name='period__type', label='Type')
👤Tomas Jacobsen

0👍

After reading the docs it seems ModelChoiceFilter is used if you want to filter from a choice of another model. So in your case you would use regular ChoiceFilter

from .models import Period

class ContainerFilter(FilterSet):
    type_of_period = ChoiceFilter(choices=Period.PeriodType)

    class Meta:
        model = models.Container
        fields = ['type_of_period',]

In the docs however, they are defining the choices like so:

STATUS_CHOICES = (
    (0, 'Regular'),
    (1, 'Manager'),
    (2, 'Admin'),
)

And not,

class PeriodType(models.TextChoices):
    LONG = 'long', 'Long period'
    SHORT = 'short', 'Short period'

So if it doesn’t work maybe you have to replace PeriodType with:

PERIOD_CHOICES = (
    ('long', 'Long period'),
    ('short', 'Short period'),
)
👤Felix Eklöf

Leave a comment