explicitly define what to do when there is a deletion. use the "on_delete" parameter of ForeignKey/OneToOneField
on django <=1.11, on_delete is optional, and its default value is CASCADE. after django >- 2.0, it is mandatory to set "on_delete" https://docs.djangoproject.com/en/1.11/ref/models/fields/#django.db.models.ForeignKey.on_delete https://medium.com/@ajrbyers/django-fk-on-delete-defaults-to-cascade-1c1506aae7c7 2017-10-03 13:28 GMT-03:00 Fellipe Henrique <[email protected]>: > There is any way to prevent cascade delete on FK field, without using > signal? > > I need to block the Delete process, not to set NULL on field.. > > Regards! > > > T.·.F.·.A.·. S+F > *Fellipe Henrique P. Soares* > > e-mail: > echo "lkrrovknFmsgor4ius" | perl -pe \ > 's/(.)/chr(ord($1)-2*3)/ge' > *Fedora Ambassador: https://fedoraproject.org/wiki/User:Fellipeh > <https://fedoraproject.org/wiki/User:Fellipeh>* > *Blog: *http:www.fellipeh.eti.br > *GitHub: https://github.com/fellipeh <https://github.com/fellipeh>* > *Twitter: @fh_bash* > > -- > You received this message because you are subscribed to the Google Groups > "Django users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/django-users. > To view this discussion on the web visit https://groups.google.com/d/ > msgid/django-users/CAF1jwZH4s%3DSnCaS3hqCiZPQd% > 3D4vvZPYU1EH7oEp1ixpNrg5ERw%40mail.gmail.com > <https://groups.google.com/d/msgid/django-users/CAF1jwZH4s%3DSnCaS3hqCiZPQd%3D4vvZPYU1EH7oEp1ixpNrg5ERw%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- Fábio C. Barrionuevo da Luz Palmas - Tocantins - Brasil - América do Sul http://pythonclub.com.br/ Blog colaborativo sobre Python e tecnologias Relacionadas, mantido totalmente no https://github.com/pythonclub/pythonclub.github.io . Todos são livres para publicar. É só fazer fork, escrever sua postagem e mandar o pull-request. Leia mais sobre como publicar em README.md e contributing.md. Regra básica de postagem: "Você" acha interessante? É útil para "você"? Pode ser utilizado com Python ou é útil para quem usa Python? Está esperando o que? Publica logo, que estou louco para ler... -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/django-users. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/CAPVjvMbA6Y%3DP8jKQr_MNRNBSXNXo8hoyxtrC%3DdXF3hMziDPhDg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
