Rename response fields django rest framework serializer
<p>I'm calling a simple get API using djangorestframework. My Model is </p>

<pre><code>class Category(models.Model):
    category_id = models.AutoField(primary_key=True)
    category_name = models.CharField("Category Name", max_length = 30)
    category_created_date = models.DateField(auto_now = True, auto_now_add=False)
    category_updated_date = models.DateField(auto_now = True, auto_now_add=False)

    def __str__(self):
        return self.category_name
</code></pre>

<p>serializer.py</p>

<pre><code>class CategorySerializer(serializers.ModelSerializer) :
    class Meta:
        model = Category
        fields = ['category_id', 'category_name']

def category_list(request):
    if request.method == 'GET':
        categories = Category.objects.all()
        serializer = CategorySerializer(categories, many=True)
        return Response(serializer.data)
</code></pre>

<p>It's working fine when i hit request on the URL and returning following response.</p>

<pre><code>[
    {
        "category_id": 1,
        "category_name": "ABC"
    }
]
</code></pre>

<p>i want to change the response field names as it's for my DB only and don't want to disclose in response. If i change the name in serializer class than it's giving no field match error.</p>

<p>Also i want to customise other params like above response in response object with message and status like below.</p>

<pre><code>{
status : 200,
message : "Category List",
response : [
        {
            "id": 1,
            "name": "ABC"
        }
    ]
}
</code></pre>

<p>Need a proper guide and flow. Experts help.</p>

<p>You can override to_representation function in serializer.Check the following code you can update <code>data</code> dictionary as you want.</p>

<pre><code>class CategorySerializer(serializers.ModelSerializer) :
    class Meta:
        model = Category
        fields = ['category_id', 'category_name']
    def to_representation(self, instance):
        data = super(CategorySerializer, self).to_representation(instance)
        result_data={"status" : 200,"message" : "Category List"}
        result_data["response"]=data
        return result_data
</code></pre>

python django django-rest-framework jsonserializer