How to save one field value from a model to another field of a linked model.

[Md. Ohiduzzaman]

I have designed a linked model named Shiftdate as:

class Shiftdate(models.Model):
    shift_date = models.DateField(blank=False,unique=True)
    sit_date = models.ForeignKey(Sitting,
                                on_delete=models.CASCADE)
Using this model I changed sit_date to shift_date which is like: 
Sitting Date     Shifting Date
2016-09-01       Sept. 15, 2016
2016-09-08       Sept. 19, 2016

Now I need to save this shifting date to the Sitting date as sit_date in Sitting model. My Sitting model is:
class Sitting(models.Model):
    sit_date = models.DateField(blank=False,unique=True)
    cut_off_date = models.DateField(null=True, blank=True)
    ballot_date = models.DateField(null=True, blank=True)
    sess_no = models.ForeignKey(Session,
                                 on_delete=models.CASCADE)
    genre = TreeForeignKey('Genre', null=True, blank=True, db_index=True)

I use 
def get_shift_date(self):
            return self.sit_date=self.shift_date 

[Fred Stluka]

Md. Ohiduzzaman,

Looks good so far.  What happens when you try it?

--Fred

---

Fred Stluka -- mailto:fr...@bristle.com -- http://bristle.com/~fred/
Bristle Software, Inc -- http://bristle.com -- Glad to be of service!
Open Source: Without walls and fences, we need no Windows or Gates.

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