====== Django-shop ======
Working dir: 

/home/dang/data/workspace/75_django_shop/maxoshop_project

Trying to combine django-shop with 2 scoops tutorial.

====== Dev env preparation ======


===== Errors =====
==== sites ====
<code>
  File "/mnt/extdata/workspace/75_django_shop/djangoshop_env/lib/python2.7/site-packages/django/db/backends/utils.py", line 64, in execute
    return self.cursor.execute(sql, params)
django.db.utils.ProgrammingError: relation "django_site" does not exist
LINE 1: ..."django_site"."domain", "django_site"."name" FROM "django_si...
</code>

Solution: 
  * delete all .pyc: 
    find . -name "*.pyc" -exec rm -- {} +
  * Disable other apps:
<code>
Disable all external apps in your INSTALLED_APPS, except your own apps, like so:

INSTALLED_APPS = (
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'django.contrib.sites',
    'django.contrib.flatpages',
    'main', # This is my own app.

    # 'compressor',
    # 'ckeditor',
    # 'imagekit',
    # 'debug_toolbar',
    # 'rest_framework',
    # 'allauth',
    # 'allauth.account',
    # 'allauth.socialaccount',

    # 'allauth.socialaccount.providers.google',
    # 'allauth.socialaccount.providers.facebook',
)

Run

python manage.py makemigrations
python manage.py migrate

Then, uncomment all the other apps, then repeat makemigrations and migrate above.

That works all the time for me
http://stackoverflow.com/questions/17891490/django-databaseerror-relation-django-site
</code>    
  * disable debug-toolbar then makemigrations, migrate then enable and rerun all migrations.



==== Make migrations / migrantion ====

  * disable debug-toolbar
    python manage.py makemigrations sites
    python manage.py migrate sites

If we do migration new there will be error with the auth_xxx:
    Creating table maxoshop_smartphone
    Running deferred SQL...
    ...
    django.db.utils.ProgrammingError: relation "auth_user" does not exist

maxoshop is using auth_user and has error. Migrate maxhoshop first:
     python manage.py makemigrations maxoshop
     
New migrate everything:
    python manage.py migrate
====== Import django-shop example to project ======
https://django-shop.readthedocs.org/en/latest/tutorial/intro.html

Copy django-shop example 
    cp -rp $example/myshop /home/dang/data/workspace/75_django_shop/maxoshop_project/maxoshop_project/
    
===== Merge myshop.settings with maxoshop settings. =====
===== Django app registration: myshop.apps =====
    ImportError: No module named myshop.apps

Problem is we place myshop under $pjs_root/maxoshop_project. Some paths need to be fixed.
   
Fix myshop/__init__.py
    default_app_config = 'maxoshop_project.myshop.apps.MyShopConfig'
    
Fix myshop/apps.py:

<code>
from django.apps import AppConfig
from django.utils.translation import ugettext_lazy as _

class ArticlesConfig(AppConfig):
    name = 'maxoshop_project.myshop'      <---------- this is it
    verbose_name = _(u'Ma Shop')
</code>

Further paths fix for import are required.

    from myshop.models.properties import Manufacturer, ProductPage, ProductImage
    ImportError: No module named myshop.models.properties
    
Change to
    from maxoshop_project.myshop.models.properties import Manufacturer, ProductPage, ProductImage
    #or
    from ...models.properties import Manufacturer, ProductPage, ProductImage

Note: we remove myshop and navigate from this module (file)
===== Data base =====
==== Migration ====
What is working?
    python manage.py migrate --fake myshop 0002
    python manage.py migrate --fake-initial myshop
    python manage.py migrate myshop
    
<code>


Finally got it to work, although I don't know why and I hope it will work in the future.
After doing numerous trials and going through Django's dev site (link).
Here are the steps (for whoever runs into this problem):

    Empty the django_migrations table: delete from django_migrations;
    For every app, delete its migrations folder: rm -rf <app>/migrations/
    Reset the migrations for the "built-in" apps: python manage.py migrate --fake
    For each app run: python manage.py makemigrations <app>. Take care of dependencies (models with ForeignKey's should run after their parent model).
    Finally: python manage.py migrate --fake-initial

After that I ran the last command without the --fake-initial flag, just to make sure.

Now everything works and I can use the migrations system normally.

I'm sure I'm not the only one who encounters this issue. It must be documented better and even simplified.

-----------------------------

 I'm getting RuntimeError: Error creating new content types. Please make sure contenttypes is migrated before trying to migrate apps individually. at the final step for Django 1.8.3 though. Do you know why? – eric Sep 21 '15 at 3:45
   	upvote
  	flag
	
@eric try running python manage.py migrate contenttypes before the final step. – azalea Oct 14 '15 at 19:33 
</code>
===== Headline =====