django-mptt serialization return children node as root node also

[Ajeet Kumar]

I am using django-mptt with django-rest-framework and for recursion i am using djangorestframework-recursive package 

from rest_framework import serializers

from rest_framework_recursive.fields import RecursiveField

from .models import Category

class CategorySerializer(serializers.ModelSerializer):

children = RecursiveField(many=True)

class Meta:

model = Category

fields = ('id','name','parent', 'children')

[   {

        "id": 1,
        "name": "Rock",
        "parent": null,
        "children": [
            {
                "id": 4,
                "name": "Corase Rock",
                "parent": 1,
                "children": []
            },
            {
                "id": 2,
                "name": "Hard Rock",
                "parent": 1,
                "children": []
            },
            {
                "id": 3,
                "name": "Soft Rock",
                "parent": 1,
                "children": []
            }
        ]
    },
    {
        "id": 4,
        "name": "Corase Rock",
        "parent": 1,
        "children": []
    },
    {
        "id": 2,
        "name": "Hard Rock",
        "parent": 1,
        "children": []
    },
    {
        "id": 3,
        "name": "Soft Rock",
        "parent": 1,
        "children": []
    }
]