CODEWITHSUNDEEP
djangomongodbdjango-modelsdjongo
Harish hari 53
Harish hari 53

Reputation: 91

Django: Abstract models cannot be instantiated for models for retrieving data

I am working on a project which has one abstract model and one main model for Djongo. When I try to insert a value, it is getting inserted without errors. But when I try to retrieve the data I get " Abstract models cannot be instantiated".

Here is my model:

class Exam_questions(models.Model):
    question=models.CharField(max_length=200,null=True)
    options=ArrayField(models.CharField(max_length=50))
    answer=models.CharField(max_length=50,null=True)
    types=models.CharField(max_length=50,null=True)
    
    class Meta:
        abstract=True


    

class ExamDetails(models.Model):
    _id=ObjectIdField()
    exam_id=models.IntegerField(null=False,default=0)
    questions=models.EmbeddedField(model_container=Exam_questions)
    objects = models.DjongoManager()

here is my code for querying:

def exams_questions(request,exam_id):
        get_exams=ExamDetails.objects.filter(exam_id=3)
        print(get_exams)
        return HttpResponse("hello") # have given this response only for testing

When I try to iterate or get values in the variable get_exams I am getting "Abstract models cannot be instantiated" error. Please help!

Thanks

EDIT: I fixed it . I did pip install djongo which downgraded the version of django from 3.2 to 3.0.5 which fixed the issue.

Upvotes: 9

Views: 6028

Answers (2)

azhar
azhar

Reputation: 380

it will be by Downgrading your django version to 3.1.12 pip install django==3.1.12

Upvotes: 7

Sourav Sharma
Sourav Sharma

Reputation: 1

Remove the Class Meta: abstract=True From Exam_questions class. And see

Upvotes: -2

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