Personnaliser la réponse JSON dans le cadre de repos django

Question

Étant donné ci-dessous est ma classe sérialiseur. J'ai tous les champs dans un modèle. Je voudrais changer la représentation des données de sérialiseur dans le format fait sur commande. Essayé to_representation méthode de sérialiseur, mais n'a pas réussi. Donc, à mon avis, la classe définie et la sortie correspondant à eux sont également mentionnées ici.

class MyListAPIView(ListAPIView): 
     def list(self,request): 
      queryset=MyModel.objects.all() 
      serializer=MyListSerilizer(queryset,many=True) 
      return Response({'Records':serializer.data}) 

sortie: ----------> Correspondant à voir est

"Records": [ 
    { 
     "Name": "abc", 
     "Address_ID": "6819319", 
     "Portal": "amksl", 
     "Address": "", 
     "City": "absjsls", 
     "DisplayOrderDateTime": null, 
     "Email": "abcd@gmail.com", 
     "Order_ID": "", 
     "Order_Code": "", 
     "Item_Code": "", 
     "DispatchedOn": "", 
     "Payment_Mode": "" 
    }, 
     { 
     "Name": "abc", 
     "Address_ID": "6819319", 
     "Portal": "amksl", 
     "Address": "", 
     "City": "absjsls", 
     "DisplayOrderDateTime": null, 
     "Email": "abcd@gmail.com", 
     "Order_ID": "", 
     "Order_Code": "", 
     "Item_Code": "", 
     "DispatchedOn": "", 
     "Payment_Mode": "" 
    }, 
     so on.... 

donc ma question est de savoir comment pourrais-je obtenir ce format JSON. Bref, comment puis-je personnaliser mon avis classe

 { 
     "identifiers":{ 
       "email":"abcd@gmai.com", 
       "phone":"123664" 
       }, 
"activity_type": "purchase", 
"timestamp": "UNIX TIMESTAMP",     
"products": [{ 
       "brandName": "abc", 
       "id": "1",         
       "sku": "abcd",         
       "name": "mnis",       
       "price": 12.9, 
       "discount": "", 
       "quantity": "", 
       "currency": "" 
       }] 
"cart_info":{ 
       "total":"", 
       "revenue":"", 
       "currency":"" 
      }, 
"Order_info":{ 
       "total":"2121", 
       . 
       . 
       . 
      } 
    }, 
    { 
     "identifiers":{ 
       "email":"abcd@gmai.com", 
       "phone":"123664" 
       }, 
"activity_type": "purchase", 
"timestamp": "UNIX TIMESTAMP",     
"products": [{ 
       "brandName": "abc", 
       "id": "1",         
       "sku": "abcd",         
       "name": "mnis",       
       "price": 12.9, 
       "discount": "", 
       "quantity": "", 
       "currency": "" 
       }] 
"cart_info":{ 
       "total":"", 
       "revenue":"",...so on 

Answer 1

Il y a la méthode appelée to_representation dans DRF. Référence: http://www.django-rest-framework.org/api-guide/fields/

Answer 2

override to_representation méthode dans la chaque fois que vous appelez serializer.data, ce dictionnaire de représentation classe sérialiseur

class MyListSerilizer(ModelSerializer): 

    class Meta: 
     model=MyModel 
     fields=['Name','Address_ID','Portal','Address','City','DisplayOrderDateTime','Email','Order_ID','Order_Code','Item_Code','DispatchedOn','Payment_Mode','Shipping_Charge','ShippingMethodCode','ShippingMethodCharges','CashOnDeliveryCharges','CurrencyCode','BillingAddress','GiftWrapCharges','SaleOrderItemCode','Shipping_ref','Cancellable','OnHold','Quantity','Invoice_No''Portal',........] 


    def to_representation(self, instance): 
     # instance is the model object. create the custom json format by accessing instance attributes normaly and return it 


     identifiers = dict() 
     identifiers['email'] = instance.Email 
     identifiers['phone'] = instance.phone 

     representation = { 
      'identifiers': identifiers, 
      'activity_type': instance.xxxx, 
      'timestamp': instance.xxxxx, 
      . 
      . 
      . -> your custom data 
     } 

    return representation 

sera retourné