Styjun

I want to change ManyToManyField Name. user_groups is manytomanyfield. I tried to use ManyToManyRelatedField and also PrimaryKeyRelatedField but it is giving error. How can i change or with data type should i give like for character field i am giving CharField

class EmployeeProfileSerializer(serializers.ModelSerializer):
 employee_id = serializers.CharField(source='user_employee_id')
 payroll_id = serializers.CharField(source='user_payroll_id')
 phone = serializers.CharField(source='user_phone')
 hire_date = serializers.DateField(source='user_hire_date')
 pay_rate = serializers.IntegerField(source='user_pay_rate')
 salaried = serializers.CharField(source='user_salaried')
 excempt = serializers.CharField(source='user_excempt')
 state = serializers.CharField(source='user_state')
 city = serializers.CharField(source='user_city')
 zipcode = serializers.IntegerField(source='user_zipcode')
 status = serializers.CharField(source='user_status')

 class Meta:
 model = UserProfile
 fields = [ 
 'employee_id',
 'phone', 
 'payroll_id',
 'hire_date',
 'pay_rate',
 'salaried',
 'excempt',
 'state',
 'city',
 'zipcode', 
 'status',
 'user_groups',

 ]

You can use SerializerMethodField:

class EmployeeProfileSerializer(serializers.ModelSerializer):
 ...
 your_custom_name = SerializerMethodField()

 class Meta:
 model = UserProfile
 fields = ['your_custom_name ', ...]

 def get_your_custom_name(self, obj):
 # Return ids:
 return list(obj.user_groups.all().values_list('pk', flat=True))
 # Or using a serializer:
 return MyUserGroupSerializer(obj.user_groups.all(), many=True).data

For create and update you have to override the create and update method to assign the new field:

class EmployeeProfileSerializer(serializers.ModelSerializer):
 ...
 your_custom_name = IntegerField()

 class Meta:
 model = UserProfile
 fields = ['your_custom_name', ...]

 # If you need validation
 def validate_your_custom_name(self, value):
 if value:
 if int(value) > 5:
 return value
 return None

 def create(self, validated_data):
 # Get the data for your new field
 my_costum_data = validated_data.get('your_custom_name')

 # Do something with it
 profile_obj = UserProfile.objects.create(...)
 if my_costum_data:
 user_group = UserGroupModel.objects.get(pk=int(my_costum_data))
 profile_obj.user_groups.add(user_group)

 def update(self, instance, validated_data):
 # Same as create()
 ...