django ForeignKey (foreign key) setting allows to be empty
for example
class Writer(models.Model):
name=models.CharField(max_length=60,verbose_name="name")
class Books(models.Model):
writer=models.ForeignKey('Writer',blank = True)
Requirements: It is necessary to allow the writer_id field of Books to be empty. The current writing method does not allow the writer_id to be empty.
class Writer(models.Model):
name=models.CharField(max_length=60,verbose_name="name")
class Books(models.Model):
writer=models.ForeignKey('Writer',blank = True,null=True)