Create records in two models by Nested serializer with two foreign keys pointing same model in Django

Question

Make two records on the same table Department by foreingn key relation using nested serializer. ,this Department two records are creating at same time the People table created

class Department(BaseModel):
    name = models.CharField(max_length=50)
    age = models.PositiveIntegerField()


class People(BaseModel):
    teacher = models.ForeignKey(Department, on_delete=models.PROTECT,related_name='teacher')
    student = models.ForeignKey(Department, on_delete=models.PROTECT, related_name='student')
    available_seats = models.PositiveIntegerField(default=0)

class DepartmentSerializer(serializers.ModelSerializer):
    class Meta:
        model = Department
        fields = '__all__'

class PeopleSerializer(WritableNestedModelSerializer):
    teacher = DepartmentSerializer(many=True, write_only=True)
    student = DepartmentSerializer(many=True, write_only=True)
    available_seats = models.PositiveIntegerField()

    class Meta:
        model = People
        fields = '__all__'

Here I need to accept this input and create records in People and Department table

Input

{

    "available_seats":100,
    "teacher": [{
            "name": John,
            "age" : 37
        }],
    "student": [{
            "name": John,
            "age" : 37
        }]
}

But i am getting this error "Direct assignment to the reverse side of a related set is prohibited. Use student.set() instead."

thanks in advance

score 0 · Answer 1 · answered May 14 '20 at 15:33

0

Remove many_True

class PeopleSerializer(WritableNestedModelSerializer):
    teacher = DepartmentSerializer(write_only=True)
    student = DepartmentSerializer(write_only=True)

answered May 14 '20 at 15:33

Ayman

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Create records in two models by Nested serializer with two foreign keys pointing same model in Django

Input

1 Answers1