id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
26652	Model instance no longer has a _default_manager attribute	Raffaele Salmaso	nobody	"Given a model

{{{#!python
from django.db import models

class Question(models.Model):
    question_text = models.CharField(max_length=200)
    pub_date = models.DateTimeField('date published')
}}}

In django < 1.10
{{{#!python
In [1]: from polls.models import Question

In [2]: q = Question.objects.last()

In [3]: Question._default_manager
Out[3]: <django.db.models.manager.Manager at 0x7ff799637f28>

In [4]: q._default_manager
Out[4]: <django.db.models.manager.Manager at 0x7ff799637f28>
}}}

In django >= 1.10
{{{#!python
In [1]: from polls.models import Question

In [2]: q = Question.objects.last()

In [3]: Question._default_manager
Out[3]: <django.db.models.manager.Manager at 0x7f5e0721d4a8>

In [4]: q._default_manager
---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-4-2c5c6f28a506> in <module>()
----> 1 q._default_manager

AttributeError: 'Question' object has no attribute '_default_manager'

In [5]: q._meta.default_manager
Out[5]: <django.db.models.manager.Manager at 0x7f5e0721d4a8>
}}}

It's an intenden behaviour?
If so, it lacks a notice in releases note and/or manager docs.

I found it testing my project with django-paypal (https://github.com/spookylukey/django-paypal/blob/79b22278b658b2fc618771ca7c471ea398455147/paypal/standard/helpers.py#L24)"	Cleanup/optimization	closed	Documentation	1.10	Normal	fixed		Loic Bistuer	Accepted	1	0	0	0	1	0