RE: abstract base class and overwriting save()
The "save def save(self, *args, **kwargs):" should not have the leading save. Also, if you are making a car system then this structure seems more appropriate: class CarMake(models.Model): ... class Car(models.Model): make = models.ForeignKey(CarMaker) ... def save(self, *args, **kwargs): do_something() super(Car, self).save(*args, **kwargs) From: django-users@googlegroups.com [mailto:django-users@googlegroups.com] On Behalf Of Daniel Roseman Sent: 28 January 2011 11:36 To: django-users@googlegroups.com Subject: Re: abstract base class and overwriting save() On Friday, January 28, 2011 9:21:48 AM UTC, Jaroslav Dobrek wrote: Hi, if I have got several models that have identical code, except for their save method, how can I use an abstract base class for them? Will I have to overwrite save() for each model? Or is there a generic way to define save(), i.e. a way that I have to use only once -- in the abstract base class? class BMW(models.Model): ... save def save(self, *args, **kwargs): do_something() super(BMW, self).save(*args, **kwargs) class Fiat(models.Model): ... save def save(self, *args, **kwargs): do_something() super(Fiat, self).save(*args, **kwargs) Jaroslav The whole point of subclassing is that subclasses inherit models from the superclass. That's how the model save() method is definted in the first place, if you don't override it. What exactly are you having problems with? -- DR. -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en. -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
Re: abstract base class and overwriting save()
> The whole point of subclassing is that subclasses inherit models from the > superclass. That's how the model save() method is definted in the first > place, if you don't override it. What exactly are you having problems with? It seems that my problems were due to another mistake of mine. I was thinking in a too complicated way. You are right: nothing has to be done, just inherit. Thank you. -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
Re: abstract base class and overwriting save()
On Friday, January 28, 2011 9:21:48 AM UTC, Jaroslav Dobrek wrote: > > Hi, > > if I have got several models that have identical code, except for > their save method, how can I use an abstract base class for them? Will > I have to overwrite save() for each model? Or is there a generic way > to define save(), i.e. a way that I have to use only once -- in the > abstract base class? > > class BMW(models.Model): >... > save def save(self, *args, **kwargs): > do_something() > super(BMW, self).save(*args, **kwargs) > > class Fiat(models.Model): >... > save def save(self, *args, **kwargs): > do_something() > super(Fiat, self).save(*args, **kwargs) > > Jaroslav The whole point of subclassing is that subclasses inherit models from the superclass. That's how the model save() method is definted in the first place, if you don't override it. What exactly are you having problems with? -- DR. -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
