I have a model 'Test' ,in which i have 2 foreignkey

models.py

class Test(models.Model):
    id =models.Autofield(primary_key=True)
    name=models.ForeignKey(model2)
    login=models.ForeignKey(model1)
    status=models.CharField(max_length=200)



class model1(models.Model):
   id=models.CharField(primary_key=True)
   .
   .

   is_active=models.IntergerField()


 class model2(model.Model):
    id=models.ForeignKey(model1)
     .

     .
     status=model.CharField(max_length=200)

      

When i add object in model 'Test' , if i select certain login then开发者_运维问答 only the objects related to that objects(model2) should be shown in field 'name'.How can i achieve this.THis will be runtime as if i change the login field value the objects in name should also change.

Overwrite the save method of class Test. So you could set name to everithing you want based on login.

class Test(models.Model):
    .
    .
    def save(self, force_insert=False, force_update=False):
        self.name = self.login.model_set()[0] # or what ever you want
        super(Test, self).save(force_insert, force_update)