达贾西。无法调用未定义的方法“...”。再次
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【中文标题】达贾西。无法调用未定义的方法“...”。再次【英文标题】:Dajaxice. Cannot call method '...' of undefined. Again 【发布时间】:2012-11-14 09:37:00 【问题描述】:我一直在尝试使用 dajaxice 创建一个最简单的应用程序。 我在这里阅读了有关此问题的所有主题,不仅在这里,多次重写所有代码,但仍然看不到问题所在。 最有趣的是,这些例子(几乎所有)都有效: https://github.com/jorgebastida/django-dajaxice/downloadsdajaxice-examples.tar.gz
但在我的项目中,我有这个:
Uncaught TypeError: Cannot call method 'sayhello' of undefined
我的工具:
Windows 7 64 python-2.7.3 Django-1.4.2 django-dajaxice-0.2项目结构:
BlocalProject/
templates/
template_1.html
manage.py
BlocalProject/
ajapp/
__init__.py
ajview.py
__init__.py
settings.py
urls.py
views.py
wsgi.py
urls.py:
from django.conf.urls.defaults import *
import settings
from dajaxice.core import dajaxice_autodiscover
dajaxice_autodiscover()
urlpatterns = patterns('',
(r'^%s/' % (settings.DAJAXICE_MEDIA_PREFIX), include('dajaxice.urls')),
(r'^$', 'BlocalProject.views.start_page'),
)
views.py:
from django.shortcuts import render
def start_page(request):
return render(request,'template_1.html')
ajapp.py:
from django.utils import simplejson
from dajaxice.core import dajaxice_functions
def sayhello(request):
return simplejson.dumps('message': 'Trololo!')
dajaxice_functions.register(sayhello)
template_1.html:
% load dajaxice_templatetags %
<html>
% dajaxice_js_import %
<script>
function alertMessage(data)
alert(data.message);
return false;
</script>
<body>
Some text
<input type="button" value="Get!" onclick="Dajaxice.ajapp.sayhello(alertMessage);" />
</body>
</html>
settings.py:
# Django settings for BlocalProject project.
DEBUG = True
TEMPLATE_DEBUG = DEBUG
ADMINS = (
# ('Your Name', 'your_email@example.com'),
)
MANAGERS = ADMINS
DATABASE_ENGINE = '' # 'postgresql_psycopg2', 'postgresql', 'mysql', 'sqlite3' or 'oracle'.
DATABASE_NAME = '' # Or path to database file if using sqlite3.
DATABASE_USER = '' # Not used with sqlite3.
DATABASE_PASSWORD = '' # Not used with sqlite3.
DATABASE_HOST = '' # Set to empty string for localhost. Not used with sqlite3.
DATABASE_PORT = '' # Set to empty string for default. Not used with sqlite3.
# Local time zone for this installation. Choices can be found here:
# http://en.wikipedia.org/wiki/List_of_tz_zones_by_name
# although not all choices may be available on all operating systems.
# In a Windows environment this must be set to your system time zone.
TIME_ZONE = 'America/Chicago'
# Language code for this installation. All choices can be found here:
# http://www.i18nguy.com/unicode/language-identifiers.html
LANGUAGE_CODE = 'en-us'
SITE_ID = 1
# If you set this to False, Django will make some optimizations so as not
# to load the internationalization machinery.
USE_I18N = True
# Absolute filesystem path to the directory that will hold user-uploaded files.
# Example: "/home/media/media.lawrence.com/media/"
MEDIA_ROOT = ''
# URL that handles the media served from MEDIA_ROOT. Make sure to use a
# trailing slash.
# Examples: "http://media.lawrence.com/media/", "http://example.com/media/"
MEDIA_URL = ''
# URL prefix for admin media -- CSS, javascript and images. Make sure to use a
# trailing slash.
# Examples: "http://foo.com/media/", "/media/".
ADMIN_MEDIA_PREFIX = '/media/'
# URL prefix for static files.
# Example: "http://media.lawrence.com/static/"
STATIC_URL = '/'
# Make this unique, and don't share it with anybody.
SECRET_KEY = ')er9!%4v0=nmxd#2=j1*tlktmidq8aam2y)-%fjf6%^xp*5r)c'
# List of callables that know how to import templates from various sources.
TEMPLATE_LOADERS = (
'django.template.loaders.filesystem.Loader',
'django.template.loaders.app_directories.Loader',
#'django.template.loaders.eggs.load_template_source',
)
MIDDLEWARE_CLASSES = (
'django.middleware.common.CommonMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
)
ROOT_URLCONF = 'BlocalProject.urls'
# Python dotted path to the WSGI application used by Django's runserver.
#WSGI_APPLICATION = 'BlocalProject.wsgi.application'
TEMPLATE_DIRS = (
'D:/_/Site_test/Djpr/BlocalProject/templates',
# Put strings here, like "/home/html/django_templates" or "C:/www/django/templates".
# Always use forward slashes, even on Windows.
# Don't forget to use absolute paths, not relative paths.
)
TEMPLATE_CONTEXT_PROCESSORS = ("django.contrib.auth.context_processors.auth",
"django.core.context_processors.debug",
"django.core.context_processors.i18n",
"django.core.context_processors.media",
"django.core.context_processors.static",
"django.core.context_processors.request",
"django.contrib.messages.context_processors.messages",)
INSTALLED_APPS = (
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'dajaxice',
'BlocalProject.ajapp',
)
DAJAXICE_MEDIA_PREFIX = "dajaxice"
DAJAXICE_DEBUG = True
DAJAXICE_JS_DOCSTRINGS = True
#DAJAXICE_NOTIFY_EXCEPTIONS = True
import logging
logging.basicConfig(level=logging.DEBUG)
【问题讨论】:
您选择 djaxice 是否有原因,而您可以使用简单的 javascript 库来做到这一点? 我的编程知识,尤其是js,不高。这只是一种爱好。我现在的目标 - 学习如何在 Django 中使用 Ajax。在我看来,dajaxice 最简单。即使有一个更简单的,我想了解这个例子有什么问题,以便更深入地理解一般概念 现在我试试这个github.com/jorgebastida/django-dajaxice/tree/master/examples 同样的结果。未捕获的类型错误:无法调用未定义的方法“你好” 为什么不使用装饰器@dajaxice_register 来注册sayhello 视图? django-dajaxice.readthedocs.org/en/latest/quickstart.html 这是蝙蝠的国家,我们不能停在这里。我停在达贾西斯。 jQuery 真的更简单 【参考方案1】:这可能为时已晚,但是...
恕我直言,dajaxice_autodiscover()
实际上并没有得到你的方法。我记得另一个 ajax lib 也有类似的问题,我通过在models.py
(或views.py
)中添加一个导入解决了这个问题,该导入在应用程序启动时被导入。你提到的example 在 simple/views.py 中有一个导入:
# Create your views here.
from django.shortcuts import render
# THIS ONE!
from dajaxice.core import dajaxice_functions
# ---------
def index(request):
return render(request, 'simple/index.html')
这看起来像是在初始化东西。我的方法是:
在您的ajapp.py
中添加几条打印语句,看看它们是否被打印出来。
在BlocalProject.ajapp
中创建空的models.py
和views.py
(django 是否仍然使用models.py
来验证模块是否为django 应用程序?)
如果您的打印语句没有被触发,那么您需要找出原因。正如我所提到的,它可能就像在模型中导入你的 ajax 模块一样简单:)
【讨论】:
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