check() is called here: https://github.com/django/django/blob/d7b9aaa366dd54ecc3142c588162e3adc7c2f7ac/django/db/models/base.py#L1265 It can be used to implement configuration checks. https://docs.djangoproject.com/en/1.11/topics/checks/#field-model-manager-and-database-checks
creation_counter appears to be used to make sure the managers are always initialised in the same order as they were defined in the model (for models that use multiple managers). https://github.com/django/django/blob/a4092af3d33b2e7a5f05f6be3bdf8298d32d9ff8/django/db/migrations/state.py#L526 On Saturday, 14 October 2017 16:13:24 UTC+1, Naveen Yadav wrote: > > I have few questions about manager class > <https://github.com/django/django/blob/master/django/db/models/manager.py> > > *creation_counter* is used to keep track of Manager's instance being > created, what is the motivation behind this ? > and > what is the purpose of* check() *which returns empty list ? > > > Thanks. > > > > > -- You received this message because you are subscribed to the Google Groups "Django developers (Contributions to Django itself)" 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-developers. To view this discussion on the web visit https://groups.google.com/d/msgid/django-developers/19aa9e5d-e089-4e59-9385-2af67a8bc8a7%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
