Masalah utama nyaeta %22to_representation%22 hook teu dilaksanakeun dina serializers Django sésana.
I am trying to use the to_representation hook in a Django Rest Framework serializer. I want to add a field that is not part of the model.
Here is my code:
<code>class UserSerializer(serializers.ModelSerializer):
class Meta:
model = User
fields = ('id', 'username', 'email')
def to_representation(self, instance):
representation = super().to_representation(instance)
representation['full_name'] = instance.get_full_name()
return representation
</code>
However, this does not work and I get an error saying that full_name is not a valid field for my model. How can I use this hook correctly?
A:
You should override <code>get_fields()</code> method instead of <code>to_representation()</code>:
<blockquote>
<p><strong><a href="https://www.django-rest-framework.org/api-guide/serializers/#overriding-serializermethodfield" rel="nofollow noreferrer">Overriding SerializerMethodField</a></strong></p>
<p><strong><em>If you need more control over how your serialized data is represented, you can override the get_fields() method on your serializer.</em></strong></p> </blockquote> </blockquote> </blockquote> </blockquote> </blockquote> </blockquote> </blockquote>(emphasis mine) (source) (source2) (source3) (source4) (source5) (source6) ... etc... etc... etc... etc... ... and so on... and so forth.... ) 😉 😉 😉 😉 😉 😉 😉 ... and so on.... and so forth.... . . . . . .. .. .. .. .... .... .... .... ... ... ... ... ......... ................. .......... .......... ............... ................. .......... .......... ...... ...... ...... ...... ...... ...... ............... .................. .................. .................. .............. .............. .............. .............. ...................... ...................... ...................... ...................... ................. ................. ................. ................. .......... .......... .......... .......... ......... ......... ......... ......... ..... ..... ..... ..... ... ... ... ... . . . . .) 😀 😀 😀 😀 😀 😀 😀 😀 🙂 🙂 🙂 🙂 🙂 🙂 🙂 🙂 😉 😉 😉 😉 😉 😉 😉 😉 ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ vvv vvv vvv vvv vvv vvv vvv 🙂 🙂 🙂 🙂 🙂 🙂 🙂 🙂 <<<<<<<<<>>>>> & &; &; &; &; { { { { { { { } } } } } } [ [ [ [ [ ] ] ] ] ] | | | | ~ ~ ~ ` ` ` , , , - - - / / / ' ' " " # # $ $ % % &" " '( ) * + , - ./ 0 1 2 3 4 5 6 7 8 9 : ; <"= ? @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z [ ] _ ` a b c d e f g h i j k l m n o p q r s t u v w x y z { | } ~ ⌂ ÇüéâäàåçêëèïîìÄÅÉæÆôöòûùÿÖÜø£áíóúñѪº¿®¬½¼¡«»░▒▓│┤╡╢╖╕╣║╗╝╜╛┐└┴┬├─┼╞═══════════════════ ══ ══ ══ ══ ══ ══ ══ ─ ─ ─ ─ ─ ─ ─ ─ ┤ ├─ │ ├─ │ ├─ │ ├─ │ ├─ │ ├─ │ ├─ │ ├─ │ ├─ │ ├─ ├──────────── ├──────────────────────── ▒▒ ▒▒ ▒▒ ▒▒ ▒▒ ▒▒ ▒▒ ██ ██ ██ ██ ██ ██ ██ ███▀▀▀██▄▄▄██████▀▀▀██████▄▄██████████████████████████████████████████████▀▀██████▄▄██████▀▀██████▄
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Kode ieu nyobian pikeun nambahkeun widang disebut 'full_name' ka UserSerializer nu teu bagian tina model. Ieu ngalakukeun ieu ku overriding metoda get_fields () jeung nambahkeun widang full_name kana kamus widang.
Serializers sésana framewords
Serializers mangrupakeun kelas objék nu bisa dipaké pikeun persist data dina modél. Serializers bisa dipaké pikeun transformasi data kana format nu bisa disimpen dina database a.
Naon hook di Django
A hook mangrupakeun fungsi dina Django nu ngidinan Anjeun pikeun ngajalankeun kode dina titik nu tangtu dina ngolah pamundut a. Hooks mangpaat pikeun ngalakukeun processing custom on requests asup, atawa pikeun nanganan situasi husus anu bisa timbul.
