It may be a challenging question if you didn't get rightly. Here I have three models in which department model should be created by taking its place name from Place model which is related to the staff model. The Staff Model is in a OneToOneField relationship with User, so when a user creates a department the place name should be passed like HiddenField in HTML . This place name is related to place model with the user with GenericForeignKey. i have created a serializer which is not working as expected, it is returning the place name , .
In shortly I want to create a department while place should be selected from current user ID
class Staff(BaseModel):
ROLES = [
('ADMIN', 'Admin'),
('TEACHER', 'Teacher')
]
auth_user = models.OneToOneField(User, on_delete=models.CASCADE)
name = models.CharField(max_length=50)
school_content_type = models.ForeignKey(ContentType, on_delete=models.CASCADE)
school_id = models.PositiveIntegerField()
school = GenericForeignKey('school_content_type', 'school_id')
role = models.CharField(null=True, blank=True, choices=ROLES, max_length=20)
class Places(BaseModel):
name = models.CharField(max_length=50)
code = models.CharField(max_length=12, unique=True)
class Department(BaseModel):
TYPES = [
('ONLINE', 'Online'),
('OFFLINE', 'OfFline')
]
department_type = models.CharField(max_length=15, choices=TYPES)
service_no = models.CharField(max_length=50)
instructions = models.TextField(null=True, blank=True)
place = models.ForeignKey(Places, to_field='code', db_column='place_code', on_delete=models.PROTECT)
SERIALIZERS
class DepartmentCreateSerializer(serializers.ModelSerializer):
place_code=serializers.CharField(read_only=True)
class Meta:
model=Department
fields = ('department_type','service_no','instructions')
def get_place(self, request):
user_id=self.context['request'].user.id
school_id=Staff.objects.get(auth_user_id= user_id).school_id
places_code_name=Places.objects.get(id= school_id).name
class PlacesSerializer(serializers.ModelSerializer):
class Meta:
model = Places
fields = ('id', 'code', 'name')
from places.serializers import PlacesSerializer
class DepartmentCreateSerializer(serializers.ModelSerializer):
place= PlacesSerializer(read_only=True)
class Meta:
model=Department
fields = ('place','service_no','instructions')
def validate(self, attrs):
palce_obj = self.context['request'].user.staff.place()
attrs.update({'place': place_obj})
attrs = super().validate(attrs)
if not attrs.get('place', None):
raise serializers.ValidationError({'place': ["Place required"]})
return attrs