我正在尝试在Django中编写一个自定义模板加载器,该加载器提供s3存储桶中存在的index.html。以下是我的加载器文件
from django.conf import settings
from django.template import Origin, Engine
from django.template.loader import TemplateDoesNotExist
from django.template.loaders.base import Loader
from boto3.session import Session
ACCESS_KEY_NAME = getattr(settings, 'AWS_TEMPLATE_LOADING_ACCESS_KEY_ID', getattr(settings, 'AWS_TEMPLATE_LOADING_ACCESS_KEY_ID', None))
SECRET_KEY_NAME = getattr(settings, 'AWS_TEMPLATE_LOADING_SECRET_ACCESS_KEY', getattr(settings, 'AWS_TEMPLATE_LOADING_SECRET_ACCESS_KEY', None))
TEMPLATE_BUCKET = getattr(settings, 'AWS_TEMPLATE_BUCKET_NAME')
class Loader(Loader):
is_usable = True
def __init__(self, *args, **kwargs):
params = args[0]
options = params.pop('OPTIONS').copy()
options.setdefault('autoescape', True)
options.setdefault('debug', settings.DEBUG)
options.setdefault('file_charset', settings.FILE_CHARSET)
libraries = options.get('libraries', {})
session = Session(aws_access_key_id=ACCESS_KEY_NAME,
aws_secret_access_key=SECRET_KEY_NAME)
s3 = session.resource('s3')
self.bucket = s3.Bucket(TEMPLATE_BUCKET)
super(Loader, self).__init__(*args, **kwargs)
self.engine = Engine(dirs=params['DIRS'], context_processors=options, loaders=Loader)
def getKeys(self):
keys_objects = []
for obj in self.bucket.objects.all():
key = obj.key
keys_objects.append({
'key': key,
'object': obj
})
return keys_objects
def get_contents(self, origin):
try:
keys_objects = self.getKeys()
for key_object in keys_objects:
if key_object['key'] == origin:
return key_object['object'].get()['Body'].read()
except FileNotFoundError:
raise TemplateDoesNotExist(origin)
def get_template_sources(self, template_name, template_dirs=None):
tried = []
yield Origin(
name=template_name,
template_name=template_name,
loader=self,
)
tried.append('/index.html')
if tried:
error_msg = "Tried Keys %s" % tried
else:
error_msg = "Your TEMPLATE_DIRS setting is empty. Change it to point to at least one template directory."
raise TemplateDoesNotExist(error_msg)
get_template_sources.is_usable = True
,在我的设置中,我已经按照以下方式设置了模板设置。
TEMPLATES = [
{
'BACKEND': 'app.s3template_loader.Loader',
'DIRS': [
'index.html'
],
'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',
],
},
}
]
以下是我的观点
from django.shortcuts import render
from django.views.generic import TemplateView
# Create your views here.
class AngularAppView(TemplateView):
template_name = 'index.html'
但是当我尝试进入终点时,我会得到
内部服务器错误:/追溯(最近一次呼叫最近):文件 “ /usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py”, 第41行,在内部 response = get_response(request)文件“ /usr/local/lib/python3.6/site-packages/django/core/handlers/base.py”, _get_response中的第217行 响应= self.process_exception_by_middleware(e,request)文件“ /usr/local/lib/python3.6/site-packages/django/core/handlers/base.py”, _get_response中的第215行 response = response.render()文件“ /usr/local/lib/python3.6/site-packages/django/template/response.py”, 第107行,在渲染中 self.content = self.rendered_content文件“ /usr/local/lib/python3.6/site-packages/django/template/response.py”, 第84行,在render_content中 content = template.render(context,self._request)TypeError:render()接受2个位置参数,但给出了3个
我找不到我做错的事情。任何帮助表示赞赏。
答案 0 :(得分:0)
您构建了一个加载程序,但是您将其用作后端/引擎。试试这个配置:
TEMPLATES = [
{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [
'index.html'
],
'APP_DIRS': True,
'OPTIONS': {
'loaders': ['app.s3template_loader.Loader'],
'context_processors': [
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
}
]
请注意,设置OPTIONS['loaders']
将禁用缓存。请参阅cached.Loader
上的文档。