Now, we will create a customized filter that we will apply to the Competition model. We will code the new CompetitionFilter class, specifically, a subclass of the rest_framework.filters.FilterSet class.
Open the restful01/drones/views.py file. Add the following code before the declaration of the CompetitionList class. The code file for the sample is included in the hillar_django_restful_07_03 folder in the restful01/drones/views.py file:
class CompetitionFilter(filters.FilterSet):
from_achievement_date = DateTimeFilter(
name='distance_achievement_date', lookup_expr='gte')
to_achievement_date = DateTimeFilter(
name='distance_achievement_date', lookup_expr='lte')
min_distance_in_feet = NumberFilter(
name='distance_in_feet', lookup_expr='gte')
max_distance_in_feet = NumberFilter(
name='distance_in_feet', lookup_expr='lte')
drone_name = AllValuesFilter(
name='drone__name')
...