refactor: set user instead of id (in user-public serializer)

apps/accounts/serializers/user_serializer.py

@@ -182,18 +182,15 @@ class Meta:
 
 
 class UserPublicInfoSerializer(serializers.ModelSerializer):
-    truncated_username = serializers.SerializerMethodField()
+    user = serializers.SerializerMethodField()
 
-    def get_truncated_username(self, obj):
-        username = obj.username
-        if username and len(username) > 4:
-            return username[-4:]
-        return username
+    def get_user(self, obj):
+        return obj.id
 
     class Meta:
         model = User
-        fields = ['id', 'truncated_username', 'first_name',
-                  'last_name', 'bio', 'profile_image', 'gender']
+        fields = ['user', 'first_name', 'last_name',
+                  'bio', 'profile_image', 'gender']
         read_only_fields = fields