How to run function if model instance field is equal to inplay (Django)

Question

I have a model that's being updated by a background task every few seconds. I would like to execute a function when the instance of the attribute status changes to inplay

I have looked through documentation and examples but can a't find what I'm looking for. Would signals be the best option to call a function after model instance field changes to inplay'?

from django.db import models

class testModel(models.Model):     
    player1 = models.CharField(null=True, max_length=50)
    player2 = models.CharField(null=True, max_length=50)
    Player1_odds = models.FloatField(null=True)
    Player2_odds = models.FloatField(null=True)
    status = models.CharField(null=True, max_length=10)
    complete = models.CharField(null=True, max_length=10)

 from django.dispatch import receiver
 from django.db.models.signals import pre_save, pre_delete, post_save, 
 post_delete
 from django.dispatch import receiver


@receiver(post_save, sender=testModel)
def post_save(sender, instance, created, **kwargs):
    # if status is = inplay call  send
    #
    #
         pass
 def send()
   # run bet

Answer 1

You should choice overriding save method rather than signals because your changes are specific to testModel only. So this is how you would override save method:

class testModel(models.Model): 
     status = models.CharField(null=True, max_length=10)          
     # your other model fields
     def save(self):
         super(testModel, self).save() # this will save model
         if self.status == 'inplay':# this will check if the status is "inplay" after change
            send()