bruce-shi

from collections import defaultdict
from django.db.models.signals import *


class DisableSignals(object):
    def __init__(self, disabled_signals=None):
        self.stashed_signals = defaultdict(list)
        self.disabled_signals = disabled_signals or [
            pre_init, post_init,
            pre_save, post_save,

raprasad

Scenario

• Django 1.9 application with two databases:
  • Legacy database with readonly access via unmanaged models. Both Django models (models.py) and related migrations have "managed" set to False
    • 'managed': False
  • Default database holding django specific tables (e.g. auth_user, django_content_type, etc)

Testing Woes

• For testing I want to re-create the legacy database tables. In other words, during python manage.py test, tell Django to set "managed" to True
  • There are several excellent blog posts on how to set "managed" to True during tests:
• http://blog.birdhouse.org/2015/03/25/django-unit-tests-against-unmanaged-databases/

ekinertac

Fields	null=True	blank=True
CharField, TextField, SlugField, EmailField, CommaSeparatedIntegerField	DON'T Django's convention is to store empty values as the empty string, and to always retrieve NULL or empty values as the empty string for consistency.	OK Do this if you want the corresponding form widget to accept empty values. If you set this, empty values get stored as empty strings in the database.
BooleanField	DON'T Use NullBooleanField instead.	DON'T
IntegerField, FloatField, DecimalField	OK If you wabt to be able to set the value to NULL in the database	OK if you want the corresponding form widget to accept empty values. if so out will also want to set null=True
DateTimeField, DateField, TimeField	OK if you want to be able to set the value to NULL in the database.	OK If you want the corresponding form widget to accept empty values, or if you are using auto now or auto now add. If so, you will al

millermedeiros

Setup Mac OS X

I've done the same process every couple years since 2013 (Mountain Lion, Mavericks, High Sierra, Catalina) and I updated the Gist each time I've done it.

I kinda regret for not using something like Boxen (or anything similar) to automate the process, but TBH I only actually needed to these steps once every couple years...