Filtered Nested Relationships Django Rest Framework

Question

I have two models which look like the following:

class Subject(models.Model):

   subject_code = models.CharField(max_length=12, unique=True)
   name = model         


        

Answer 1

This is the solution that worked for me to this question:

class FilteredAssessmentsSerializer(serializers.ListSerializer):
    def to_representation(self,data):
       qry_year = self.context['request'].GET.get('year')
       data = data.filter(year=qry_year)
       return super(FilteredAssessmentsSerializer,  self).to_representation(data)

class AssessmentsSerializer(serializers.ModelSerializer):
   class Meta:
      model = Subject_assessment
      list_serializer_class = FilteredAssessmentsSerializer
      fields = '__all__'

class SubjectSerializer(serializers.ModelSerializer):
   sub_assessments = AssessmentsSerializer(many=True)
   class Meta:
       model = Subject
       fields = (
          "subject_code", "name", "dept_code",
          "faculty_code", "university_code", "description",
          "sub_assessments"
       )

Reference: I combined the following solutions to come up with one that suits me.

How can I apply a filter to a nested resource in Django REST framework?

https://stackoverflow.com/a/28354281/7210105