سلام وقت بخیر لطفا عکس یا قطعه کد رو قرار بدین 

#models.py

from django.db import models

class Author(models.Model):

    firstName = models.CharField(max_length=50)

    lastName = models.CharField(max_length=50)

    age = models.IntegerField()

    def __str__(self):

        return f'{self.firstName} {self.lastName}'

class Post(models.Model):

    title = models.CharField(max_length=60)

    text = models.TextField()

    author = models.ForeignKey(Author, on_delete=models.CASCADE)

    def __str__(self):

        return f'{self.title}'

_____________________________________________________

# views.py

from django.shortcuts import render

from django.http import HttpResponse

from blog.models import Author

def postList(requests):

    posts = Author.objects.all()

    return HttpResponse("this is list")

# error: Unresolved attribute reference 'objects' for class 'Author' 
_______________________________________________________

#change models.py to fix an error

from django.db import models

class Author(models.Model):
    objects = models.Manager()

    firstName = models.CharField(max_length=50)
    lastName = models.CharField(max_length=50)
    age = models.IntegerField()

    def __str__(self):
        return f'{self.firstName} {self.lastName}'


class Post(models.Model):
    objects = models.Manager()

    title = models.CharField(max_length=60)
    text = models.TextField()
    author = models.ForeignKey(Author, on_delete=models.CASCADE)

    def __str__(self):
        return f'{self.title}'
 

#models.py

from django.db import models

class Author(models.Model):

    firstName = models.CharField(max_length=50)

    lastName = models.CharField(max_length=50)

    age = models.IntegerField()

    def __str__(self):

        return f'{self.firstName} {self.lastName}'

class Post(models.Model):

    title = models.CharField(max_length=60)

    text = models.TextField()

    author = models.ForeignKey(Author, on_delete=models.CASCADE)

    def __str__(self):

        return f'{self.title}'

_____________________________________________________

# views.py

from django.shortcuts import render

from django.http import HttpResponse

from blog.models import Author

def postList(requests):

    posts = Author.objects.all()

    return HttpResponse("this is list")

# error: Unresolved attribute reference 'objects' for class 'Author' 
_______________________________________________________

#change models.py to fix an error

from django.db import models

class Author(models.Model):
    objects = models.Manager()

    firstName = models.CharField(max_length=50)
    lastName = models.CharField(max_length=50)
    age = models.IntegerField()

    def __str__(self):
        return f'{self.firstName} {self.lastName}'


class Post(models.Model):
    objects = models.Manager()

    title = models.CharField(max_length=60)
    text = models.TextField()
    author = models.ForeignKey(Author, on_delete=models.CASCADE)

    def __str__(self):
        return f'{self.title}'