In Django, one way to add data to a child table after the creation of the corresponding parent record is to use signals.
Define a signal receiver function that handles the post-save signal of the parent model. This function will receive the parent instance as an argument.
In the receiver function, create the child instances using the parent instance and any other required data.
Save the child instances.
Here is an example:
from django.db.models.signals import post_save
from django.dispatch import receiver
from myapp.models import ParentModel, ChildModel
@receiver(post_save, sender=ParentModel)
def create_child_records(sender, instance, created, **kwargs):
if created:
for i in range(3):
ChildModel.objects.create(
parent=instance,
field1='value1',
field2='value2'
)
In this example, the create_child_records
function will be called every time a new ParentModel
instance is saved. It creates three ChildModel
instances with the parent
field set to the parent instance and the field1
and field2
values set to 'value1'
and 'value2'
, respectively.
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Asked: 2022-06-01 11:00:00 +0000
Seen: 8 times
Last updated: Apr 15 '22
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