[Fixed]-How to perfom_create when the objet is created in the admin site. Django RestFramework

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Signals are a useful tool for this job (docs)

Using the post_save signal you can run a function every time an instance of a model is saved, no matter where it is saved from. The post_save signal provides the created argument so you only run the function when the object is created

from django.db.models.signals import post_save
from django.dispatch import receiver
from myapp.models import DocumentDetailSample


@receiver(post_save, sender=DocumentDetailSample)
def my_handler(sender, **kwargs):
    if kwargs['created']:
        query_set = User.objects.all()
        ids = query_set.values_list('id', flat=True)
        for i in ids:
            doc_detail = DocumentDetail()
            doc_detail.details_sample = kwargs['instance']
            doc_detail.user_id_id = str(i)
            doc_detail.save()
👤Iain Shelvington

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