DT
объект модели такого метода не имеет
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class Book(models.Model):
e_book = models.BooleanField()
If e_book:
file = models.FileField(upload_to='/somewhere')DT
M
class Book(models.Model):
e_book = models.BooleanField()
If e_book:
file = models.FileField(upload_to='/somewhere')M
class Book(models.Model):
e_book = models.BooleanField()
If e_book:
file = models.FileField(upload_to='/somewhere')Х
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M
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D
DT
Х
M