【发布时间】：2012-03-15 06:45:34
【问题描述】：
我已经建立了一个基于 Google App Engine 的网站。它包括十个模型，根据用户输入进行一些简单的计算。以前，它是使用 Python 2.5 编码的，使用 djangoform.modelform 和 db.model 来处理数据。由于 Python 2.7 不支持 djangoform.modelform，我想改用 django modelform。但是，在迁移过程中，我遇到了一些问题（严重的内部错误）。当我试图通过 Django.forms.Modelform 添加表单时。我提供了旧代码和新代码（不起作用）。我的问题是：
如何使用 Django 库解决我的问题？
如果可能，我是否必须将我的网站设为一个项目，并为模型创建十个应用程序？
我是否必须修改我的 yaml 文件，并创建新的 url.py、setting.py 等？
非常感谢您提出任何意见和建议。我正在使用 Python 2.7、GAE 1.6.2 和 Django 1.2。
这是有问题的代码（代码 1）。
import webapp2 as webapp
import django
from google.appengine.ext.webapp.util import run_wsgi_app
from google.appengine.ext.webapp import template
import os
from django.db import models
from django.forms import ModelForm
class trexInp(models.Model):
chemical_name = models.CharField(max_length=255)
class trexInput(ModelForm):
class Meta:
model = trexInp
class trexInputPage(webapp.RequestHandler):
def get(self):
html = str(trexInput())
self.response.out.write(html)
app = webapp.WSGIApplication([('/.*', trexInputPage)], debug=True)
def main():
run_wsgi_app(app)
if __name__ == '__main__':
main()
为了比较，我附上了旧代码（代码 2）。
import webapp2 as webapp
from google.appengine.ext.webapp.util import run_wsgi_app
from google.appengine.ext import db
from google.appengine.ext.webapp import template
from google.appengine.ext.db import djangoforms
class trexInp(db.Model):
chemical_name = db.StringProperty()
class trexInput(djangoforms.ModelForm):
class Meta:
model = trexInp
class trexInputPage(webapp.RequestHandler):
def get(self):
html = str(trexInput())
self.response.out.write(html)
app = webapp.WSGIApplication([('/.*', trexInputPage)], debug=True)
def main():
run_wsgi_app(app)
if __name__ == '__main__':
main()
这是我的 app.yaml 文件
application: pypest1
version: 1
runtime: python27
api_version: 1
threadsafe: false
libraries:
- name: numpy
version: latest
- name: webapp2
version: latest
- name: django
version: "1.2"
handlers:
- url: /
script: main.py
- url: /index.html
script: main.py
#t-rex
- url: /trex_input.html
script: trex/trex_input.py
我的 main.py 文件 导入操作系统 os.environ['DJANGO_SETTINGS_MODULE']='global_settings' 将 webapp2 导入为 webapp
from google.appengine.ext.webapp.util import run_wsgi_app
from google.appengine.ext.webapp import template
from google.appengine.ext.db import djangoforms
class defaultPage(webapp.RequestHandler):
def get(self):
html = template.render('templates/01.html', {'title':'model'})
self.response.out.write(html)
app = webapp.WSGIApplication([('/.*', defaultPage)], debug=True)
def main():
run_wsgi_app(app)
if __name__ == '__main__':
main()
这是服务器日志：
2012-02-24 22:40:55 Running command: "['C:\\Python27\\pythonw.exe', 'C:\\Program Files (x86)\\Google\\google_appengine\\dev_appserver.py', '--admin_console_server=', '--port=8082', u'C:\\Users\\tao\\Dropbox\\AppPest1']"
WARNING 2012-02-25 03:40:57,216 rdbms_mysqldb.py:74] The rdbms API is not available because the MySQLdb library could not be loaded.
INFO 2012-02-25 03:40:57,486 dev_appserver_multiprocess.py:650] Running application dev~pypest1 on port 8082: http://localhost:8082
INFO 2012-02-25 03:40:57,486 dev_appserver_multiprocess.py:652] Admin console is available at: http://localhost:8082/_ah/admin
WARNING 2012-02-25 03:40:59,211 py_zipimport.py:139] Can't open zipfile C:\Python27\lib\site-packages\setuptools-0.6c11-py2.7.egg-info: IOError: [Errno 13] file not accessible: 'C:\\Python27\\lib\\site-packages\\setuptools-0.6c11-py2.7.egg-info'
INFO 2012-02-25 03:40:59,611 dev_appserver.py:2865] "GET / HTTP/1.1" 200 -
INFO 2012-02-25 03:40:59,671 dev_appserver.py:2865] "GET /stylesheets/style.css HTTP/1.1" 304 -
INFO 2012-02-25 03:40:59,720 dev_appserver.py:2865] "GET /images/valid-xhtml10-blue.png HTTP/1.1" 304 -
INFO 2012-02-25 03:40:59,767 dev_appserver.py:2865] "GET /images/valid-css-blue.png HTTP/1.1" 304 -
INFO 2012-02-25 03:40:59,816 dev_appserver.py:2865] "GET /stylesheets/images/bg.jpg HTTP/1.1" 304 -
INFO 2012-02-25 03:40:59,867 dev_appserver.py:2865] "GET /stylesheets/images/header.jpg HTTP/1.1" 304 -
INFO 2012-02-25 03:41:00,023 dev_appserver.py:2865] "GET /stylesheets/images/intro.jpg HTTP/1.1" 304 -
INFO 2012-02-25 03:41:00,381 dev_appserver.py:2865] "GET /favicon.ico HTTP/1.1" 404 -
INFO 2012-02-25 03:41:01,177 dev_appserver.py:2865] "GET /trex_description.html HTTP/1.1" 200 -
INFO 2012-02-25 03:41:01,538 dev_appserver.py:2865] "GET /stylesheets/style.css HTTP/1.1" 304 -
INFO 2012-02-25 03:41:01,585 dev_appserver.py:2865] "GET /images/valid-xhtml10-blue.png HTTP/1.1" 304 -
INFO 2012-02-25 03:41:01,632 dev_appserver.py:2865] "GET /images/valid-css-blue.png HTTP/1.1" 304 -
INFO 2012-02-25 03:41:01,783 dev_appserver.py:2865] "GET /stylesheets/images/bg.jpg HTTP/1.1" 304 -
INFO 2012-02-25 03:41:01,891 dev_appserver.py:2865] "GET /stylesheets/images/header.jpg HTTP/1.1" 304 -
INFO 2012-02-25 03:41:01,940 dev_appserver.py:2865] "GET /stylesheets/images/intro.jpg HTTP/1.1" 304 -
INFO 2012-02-25 03:41:01,996 dev_appserver.py:2865] "GET /favicon.ico HTTP/1.1" 404 -
WARNING 2012-02-25 03:41:03,632 py_zipimport.py:139] Can't open zipfile C:\Python27\lib\site-packages\setuptools-0.6c11-py2.7.egg-info: IOError: [Errno 13] file not accessible: 'C:\\Python27\\lib\\site-packages\\setuptools-0.6c11-py2.7.egg-info'
ERROR 2012-02-25 03:41:03,657 cgi.py:121] Traceback (most recent call last):
File "C:\Users\tao\Dropbox\AppPest1\trex\trex_input.py", line 33, in <module>
class trexInp(models.Model):
File "C:\Program Files (x86)\Google\google_appengine\lib\django_1_2\django\db\models\base.py", line 50, in __new__
kwargs = {"app_label": model_module.__name__.split('.')[-2]}
IndexError: list index out of range
INFO 2012-02-25 03:41:03,686 dev_appserver.py:2865] "GET /trex_input.html HTTP/1.1" 500 -
【问题讨论】：
-
您需要重新格式化您的代码 - 每行缩进 4 个空格
-
感谢您的建议。重新格式化。
-
你遇到了什么问题？
-
它说服务器内部错误。也许我的设置有问题？谢谢！
-
能否请您发布堆栈跟踪，以便我们为您提供帮助。您可以从 Google App Engine 仪表板的服务器日志中获取 stackstrace :)
标签： django google-app-engine django-forms