Typeerror: Manyrelatedmanager Object Is Not Iterable
I Am Not Able to Resolve the Error Named Many Related Manager Is Not Iterable. I Have Models Named a and B as Shown Below: Class B(Models. Model): Indicator =...
I am not able to resolve the error named Many Related Manager is not iterable. I have Models named A and B as shown below:
class B(models.Model):
indicator = models.CharField(max_length=255, null=True)
tags = models.CharField(max_length=255, null=True, blank=True)
class A(models.Model):
definitions = models.ManyToManyField(B)
user = models.ForeignKey('userauth.ABCUSER', null=True, blank=True)
project = models.ForeignKey('userauth.ProjectList', null=True, blank=True)
I want to retrieve definitions attribute of Model A which includes attributes of Class B. I have tried to retrieve it as shown below, But It gives me an error:
TypeError: ManyRelatedManager object is not iterable
if tbl_scope == 'Generic':
checked_objects = A.objects.get(user=user, project=project)
for checked_object in checked_objects.definitions:
print(checked_object.indicator)
1 Answer
An m2m field is returned as a related manager object so its not iterable. You need to use all to convert it to a queryset to make it iterable.
if tbl_scope == 'Generic':
checked_objects = A.objects.get(user=user, project=project)
for checked_object in checked_objects.definitions.all():
print(checked_object.indicator)
You can read more about m2m field.
James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.
