About Checking if a Model Field Exists
You can dynamically check if an instance has an attribute with hasattr(instance, attr_name). To be more specific and check if a Django model or instance has a field, use this utility function:
from django.core.exceptions import FieldDoesNotExist
def has_field(model, field_name):
try:
model._meta.get_field(field_name)
return True
except FieldDoesNotExist:
return False
Then use it as follows:
if has_field(instance, "views_count"):
instance.views_count += 1
instance.save(update_fields=["views_count"])
Tips and Tricks Programming Django 6.x Django 5.2 Django 4.2 Python 3
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