Hello,
class Section(models.Model):
name = models.CharField(blank=True, unique=True, maxlength=100)
students = models.ManyToManyField
(Student,filter_interface=models.HORIZONTAL)
I want detect students-field's changes and when a Student is remove
or add to relation, I want call function student_is_removed() or
student_is_added().
I tried do this with overriding save(), but I have no idea, how can I
get old value to check how many student go in/out relation.
Have you any ideas?
best regards
Krzysztof Kaczmarek
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