[Django]-Passing Editable Fields as validated_data method of Django-Rest-Framework Serializer

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Just loop over instance.phonenumber_set.all() at your update() method and you will have complete access to those related objects.

for ex:

def update(self, instance, validated_data):
    for phonenumber in instance.phonenumber_set.all():
        # do what you want with phonenumber, like phonenumber.id

instance is the current object that is being updated at your serializer and it is being passed as an argument to update() as you can see, so you can access and do anything with it as you normally do.

Tip:

It’s better to add related_name to related_contact to make it better readability, also change related_contact to contacts. related_name is used for selecting reverse relations as we did just like now.

I think it’s better to do so:

contacts = models.ForeignKey(to='ContactModel', on_delete=models.CASCADE, related_name='phonenumbers')

so instead of using phonenumber_set it will be phonenumbers for better readability but the name with _map still valid too, see this answer for more info about related_name

👤Mahmoud Adel

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