pythondjangodjango-modelsmany-to-manydjango-errors

How to empty a many to many field in django

I would like to empty all things within the following many to many field(weekday_with_class):

 all_existing_class.weekday_with_class = None

Here is the models.py:

   weekday_with_class = models.ManyToManyField('Weekday', blank=True, related_name='weekday_with_class')

However, if I execute the above code, I get this error:

Direct assignment to the forward side of a many-to-many set is prohibited. Use weekday_with_class.set() instead.

How is it possible to basically make my weekday_with_class empty for an instance? Thank you, and please leave a comment if you need any more information.

Solution 
  • all_existing_class.weekday_with_class.clear()