Google App Engine Helper for Django を使おうとしてみた

1. Google App Engine Helper for Django を使う
http://mars.shehas.net/~tmatsuo/misc/appengine_helper_for_django-ja.html
を参考に
http://code.google.com/p/google-app-engine-django/
から　appengine_helper_for_django-r30.zip　を download

2. これをテスト用の helloworld フォルダ以下に展開しようかとも、思ったが、そういうことはしてはいけない。( app.yaml ファイルなどもある）

C:\google\appengine_helper_for_django　に展開


3. UNIX の場合 ln -s /path/to/google_appengine .google_appengine

appengine_helper_for_django　は GAE の SDK にアクセスする。
Windows でも ln -s 　できたはずなのでやり方を確認したが　fsutil はファイル単位だけのサポートでフォルダには対応していないので、ろいろツールは作成されているようですが、
どうも Windows　のシンボリックリンクのようなものは信用できない。
結局、物理的に C:\Program Files\Google\google_appengine を copy。

4. 起動　( 拡張子 .py が c:python25\python.exe に関連づけされている）

C:\google\appengine_helper_for_django>manage.py runserver
WARNING:root:Loading the SDK from the 'google_appengine' subdirectory is now deprecated!
WARNING:root:Please move the SDK to a subdirectory named '.google_appengine' instead.
WARNING:root:See README for further details.
WARNING:root:Could not read datastore data from c:\docume~1\xxx\locals~1\temp\django_google-app-engine-django.datastore
WARNING:root:Could not read datastore data from c:\docume~1\xxx\locals~1\temp\django_google-app-engine-django.datastore.history
WARNING:root:Could not initialize images API; you are likely missing the Python "PIL" module. ImportError: No module named PIL
INFO:root:Server: appengine.google.com
INFO:root:Checking for updates to the SDK.
INFO:root:The SDK is up to date.
WARNING:root:Could not read datastore data from c:\docume~1\xxx\locals~1\temp\django_google-app-engine-django.datastore
WARNING:root:Could not read datastore data from c:\docume~1\xxx\locals~1\temp\django_google-app-engine-django.datastore.history
WARNING:root:Could not initialize images API; you are likely missing the Python "PIL" module. ImportError: No module named PIL
INFO:root:Running application google-app-engine-django on port 8080: http://localhost:8080

5. 起動されたようなのでアクセスしてみる　http://localhost:8080/
Welcome to Django
It worked!
Congratulations on your first Django-powered page.

Of course, you haven't actually done any work yet. Here's what to do next:

* If you plan to use a database, edit the DATABASE_* settings in settings/settings.py.
* Start your first app by running python settings/manage.py startapp [appname].

You're seeing this message because you have DEBUG = True in your Django settings file and you haven't configured any URLs. Get to work!





6. manage.py startapp polls を実行、コンソールにあいかわらず警告がでるが、以下が作成される。
C:\google\appengine_helper_for_django\polls
polls/
__init__.py
models.py
views.py

7. モデルの作成
polls/models.py

from django.db import models

# Create your models here.
from appengine_django.models import BaseModel
from google.appengine.ext import db

class Poll(BaseModel):
question = db.StringProperty()
pub_date = db.DateTimeProperty('date published')

class Choice(BaseModel):
poll = db.ReferenceProperty(Poll)
choice = db.StringProperty()
votes = db.IntegerProperty()

8. settings.py の INSTALLED_APPS にpolls を追加

INSTALLED_APPS = (
'appengine_django',
'django.contrib.auth',
'polls',
#    'django.contrib.contenttypes',
#    'django.contrib.sessions',
#    'django.contrib.sites',
)

9. manage.py shell

＞＞＞ class Poll(BaseModel):
...    question = db.StringProperty()
...    pub_date = db.DateTimeProperty('date published')
...
Traceback (most recent call last):
File "", line 1, in 
File "C:\google\appengine_helper_for_django\appengine_django\models.py", line　109,in __new__
new_class._meta = ModelOptions(new_class)
File "C:\google\appengine_helper_for_django\appengine_django\models.py", line 49, in __init__
model_module = sys.modules[cls.__module__]
KeyError: '__console__'
＞＞＞

Django をみてみないと。 テンプレート機能だけしか使っていない。
以前、 An example of using Django on top of App Engine　はみたのだけれども。