无法使用 Django 设置 Jinja2
Unable to set up Jinja2 with Django
我已经安装了 Django 1.9.7,Pythons 3.4.3 和 2.7.10 在 Ubuntu。
这些是我遵循的步骤:
- 用
django-admin startproject testproject
创建了一个新项目
cd testproject/testproject
- 在
django-admin startapp testapp
的项目中制作了一个应用程序
- 使用
mkdir testapp/templates
在该应用程序中创建了一个模板目录,并在其中添加了一个非常基本的 index.html
模板
通过编辑默认设置文件的第 57 行编辑 settings.py
将模板后端更改为 django.template.backends.jinja2.Jinja2
,并将 testproject.testapp
添加到 [=22] =]; TEMPLATES
部分因此是这样的:
TEMPLATES = [
{
'BACKEND': 'django.template.backends.jinja2.Jinja2',
'DIRS': [],
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
},
]
编辑了 urls.py
,添加了 from testproject.testapp import views
和 URL 模式 url(r'^$', views.index),
编辑testapp/views.py
添加
def index(request):
return render(request, 'index.html')
cd ..
- 运行 与
python3 manage.py runserver
或 python manage.py runserver
的服务器 -- 非常相似的效果
- 使用浏览器
http://localhost:3000
我收到一个错误。在命令行上我得到这个:
Internal Server Error: /
Traceback (most recent call last):
File "/usr/local/lib/python3.4/dist-packages/django/template/utils.py", line 86, in __getitem__
return self._engines[alias]
KeyError: 'jinja2'
接着是另一个导致"during handling of the above exception"的异常,这与我在浏览器中看到的异常相匹配:
Environment:
Request Method: GET
Request URL: http://localhost:3000/
Django Version: 1.9.7
Python Version: 3.4.3
Installed Applications:
['django.contrib.staticfiles', 'testproject.testapp', 'webpack_loader']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware']
Traceback:
File "/usr/local/lib/python3.4/dist-packages/django/template/utils.py" in __getitem__
86. return self._engines[alias]
During handling of the above exception ('jinja2'), another exception occurred:
File "/usr/local/lib/python3.4/dist-packages/django/core/handlers/base.py" in get_response
174. response = self.process_exception_by_middleware(e, request)
File "/usr/local/lib/python3.4/dist-packages/django/core/handlers/base.py" in get_response
172. response = response.render()
File "/usr/local/lib/python3.4/dist-packages/django/template/response.py" in render
160. self.content = self.rendered_content
File "/usr/local/lib/python3.4/dist-packages/django/template/response.py" in rendered_content
135. template = self._resolve_template(self.template_name)
File "/usr/local/lib/python3.4/dist-packages/django/template/response.py" in _resolve_template
90. new_template = self.resolve_template(template)
File "/usr/local/lib/python3.4/dist-packages/django/template/response.py" in resolve_template
80. return select_template(template, using=self.using)
File "/usr/local/lib/python3.4/dist-packages/django/template/loader.py" in select_template
55. engines = _engine_list(using)
File "/usr/local/lib/python3.4/dist-packages/django/template/loader.py" in _engine_list
143. return engines.all() if using is None else [engines[using]]
File "/usr/local/lib/python3.4/dist-packages/django/template/utils.py" in all
110. return [self[alias] for alias in self]
File "/usr/local/lib/python3.4/dist-packages/django/template/utils.py" in <listcomp>
110. return [self[alias] for alias in self]
File "/usr/local/lib/python3.4/dist-packages/django/template/utils.py" in __getitem__
101. engine = engine_cls(params)
File "/usr/local/lib/python3.4/dist-packages/django/template/backends/jinja2.py" in __init__
35. self.env = environment_cls(**options)
Exception Type: TypeError at /
Exception Value: __init__() got an unexpected keyword argument 'context_processors'
我得到的痕迹与 Python 2.
非常相似
我发现 which has a similar error message (KeyError: 'jinja2'
) but seems to be a separate problem, and this bug report又出现了同样的错误,其解决方法是安装jinja2,但是jinja2确实安装了。至少,我可以 运行 python
或 python3
然后 import jinja2
。 pip
说 jinja2 是最新的。
我一定遗漏了一些重要的东西——有什么想法吗?
有关 context_processors
的错误是因为 Jinja2 后端不支持该参数。
您应该在 TEMPLATES
设置中添加一个额外的后端,而不是将现有后端从 django 替换为 jinja2
。有关详细信息,请参阅 this answer。如果替换现有后端,则需要 Django 模板的应用程序将无法运行,包括管理员。
最后,jinja2 后端将在 testapp/jinja2
中查找模板,而不是 testapp/templates
。
我已经安装了 Django 1.9.7,Pythons 3.4.3 和 2.7.10 在 Ubuntu。
这些是我遵循的步骤:
- 用
django-admin startproject testproject
创建了一个新项目
cd testproject/testproject
- 在
django-admin startapp testapp
的项目中制作了一个应用程序
- 使用
mkdir testapp/templates
在该应用程序中创建了一个模板目录,并在其中添加了一个非常基本的index.html
模板 通过编辑默认设置文件的第 57 行编辑
settings.py
将模板后端更改为django.template.backends.jinja2.Jinja2
,并将testproject.testapp
添加到 [=22] =];TEMPLATES
部分因此是这样的:TEMPLATES = [ { 'BACKEND': 'django.template.backends.jinja2.Jinja2', 'DIRS': [], 'APP_DIRS': True, 'OPTIONS': { 'context_processors': [ 'django.template.context_processors.debug', 'django.template.context_processors.request', 'django.contrib.auth.context_processors.auth', 'django.contrib.messages.context_processors.messages', ], }, }, ]
编辑了
urls.py
,添加了from testproject.testapp import views
和 URL 模式url(r'^$', views.index),
编辑
testapp/views.py
添加def index(request): return render(request, 'index.html')
cd ..
- 运行 与
python3 manage.py runserver
或python manage.py runserver
的服务器 -- 非常相似的效果 - 使用浏览器
http://localhost:3000
我收到一个错误。在命令行上我得到这个:
Internal Server Error: /
Traceback (most recent call last):
File "/usr/local/lib/python3.4/dist-packages/django/template/utils.py", line 86, in __getitem__
return self._engines[alias]
KeyError: 'jinja2'
接着是另一个导致"during handling of the above exception"的异常,这与我在浏览器中看到的异常相匹配:
Environment:
Request Method: GET
Request URL: http://localhost:3000/
Django Version: 1.9.7
Python Version: 3.4.3
Installed Applications:
['django.contrib.staticfiles', 'testproject.testapp', 'webpack_loader']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware']
Traceback:
File "/usr/local/lib/python3.4/dist-packages/django/template/utils.py" in __getitem__
86. return self._engines[alias]
During handling of the above exception ('jinja2'), another exception occurred:
File "/usr/local/lib/python3.4/dist-packages/django/core/handlers/base.py" in get_response
174. response = self.process_exception_by_middleware(e, request)
File "/usr/local/lib/python3.4/dist-packages/django/core/handlers/base.py" in get_response
172. response = response.render()
File "/usr/local/lib/python3.4/dist-packages/django/template/response.py" in render
160. self.content = self.rendered_content
File "/usr/local/lib/python3.4/dist-packages/django/template/response.py" in rendered_content
135. template = self._resolve_template(self.template_name)
File "/usr/local/lib/python3.4/dist-packages/django/template/response.py" in _resolve_template
90. new_template = self.resolve_template(template)
File "/usr/local/lib/python3.4/dist-packages/django/template/response.py" in resolve_template
80. return select_template(template, using=self.using)
File "/usr/local/lib/python3.4/dist-packages/django/template/loader.py" in select_template
55. engines = _engine_list(using)
File "/usr/local/lib/python3.4/dist-packages/django/template/loader.py" in _engine_list
143. return engines.all() if using is None else [engines[using]]
File "/usr/local/lib/python3.4/dist-packages/django/template/utils.py" in all
110. return [self[alias] for alias in self]
File "/usr/local/lib/python3.4/dist-packages/django/template/utils.py" in <listcomp>
110. return [self[alias] for alias in self]
File "/usr/local/lib/python3.4/dist-packages/django/template/utils.py" in __getitem__
101. engine = engine_cls(params)
File "/usr/local/lib/python3.4/dist-packages/django/template/backends/jinja2.py" in __init__
35. self.env = environment_cls(**options)
Exception Type: TypeError at /
Exception Value: __init__() got an unexpected keyword argument 'context_processors'
我得到的痕迹与 Python 2.
非常相似我发现KeyError: 'jinja2'
) but seems to be a separate problem, and this bug report又出现了同样的错误,其解决方法是安装jinja2,但是jinja2确实安装了。至少,我可以 运行 python
或 python3
然后 import jinja2
。 pip
说 jinja2 是最新的。
我一定遗漏了一些重要的东西——有什么想法吗?
有关 context_processors
的错误是因为 Jinja2 后端不支持该参数。
您应该在 TEMPLATES
设置中添加一个额外的后端,而不是将现有后端从 django 替换为 jinja2
。有关详细信息,请参阅 this answer。如果替换现有后端,则需要 Django 模板的应用程序将无法运行,包括管理员。
最后,jinja2 后端将在 testapp/jinja2
中查找模板,而不是 testapp/templates
。