URL dispatch 如何使用 Pyramid 服务静态图像文件? [英] How does URL dispatch work to serve static image files using Pyramid?
问题描述
我从快速教程页面创建了一个简单的 Pyramid 应用程序 在路由表的末尾，它会直接为静态资产提供服务，而无需使用模板.
from pyramid.static import static_viewstatic_view = static_view('/path/to/static/dir', use_subpath=True)# .. 所有其他的 add_route 声明都应该出现# 在这之前，默认情况下，它会捕获所有请求config.add_route('catchall_static', '/*subpath')config.add_view('myapp.static.static_view', route_name='catchall_static')如果需要，也可以配置多个静态路由.
请参阅静态资产的完整文档.
I created a simple Pyramid app from the quick tutorial page here that has the following files relevant to the question:
tutorial/__init__.py:
from pyramid.config import Configurator
def main(global_config, **settings):
config = Configurator(settings=settings)
config.include('pyramid_chameleon')
config.add_route('home', '/')
config.add_route('hello', '/howdy')
config.add_static_view(name='static', path='tutorial:static')
config.add_route('image', '/{filename}')
config.scan('.views')
return config.make_wsgi_app()
tutorial/views/views.py:
from pyramid.view import (
view_config,
view_defaults
)
@view_defaults(renderer='../templates/home.pt')
class TutorialViews:
def __init__(self, request):
self.request = request
@view_config(route_name='home')
def home(self):
return {'name': 'Home View'}
@view_config(route_name='hello')
def hello(self):
return {'name': 'Hello View'}
@view_config(route_name='image', renderer='../templates/image.pt')
def image(request):
filename = request.matchdict.get('filename')
return {'name': 'Hello View', 'filename': filename}
tutorial/templates/image.pt:
<!DOCTYPE html>
<html lang="en">
<head>
<title>Quick Tutorial: ${name}</title>
<link rel="stylesheet"
href="${request.static_url('tutorial:static/app.css') }"/>
</head>
<body>
<h1>Hi ${name}</h1>
<img src="../static/images/${filename}">
</body>
</html>
I have placed an image file at the path tutorial/static/images/test.jpeg. Now, here are the 3 cases I tried and the results when I started the server using pserve development.ini --reload:
- Route config in
tutorial/__init__.py:config.add_route('image', '/{filename}'). When I accesslocalhost:6543/test.jpeg, I can see the image and things work as expected. - Route config in
tutorial/__init__.py:config.add_route('image', '/foo/{filename}'). When I accesslocalhost:6543/foo/test.jpeg, I can see the image and things work as expected. - Route config in
tutorial/__init__.py:config.add_route('image', '/foo/bar/{filename}'). When I accesslocalhost:6543/foo/bar/test.jpeg, this is when I don't see the image.
In case 3) above, I tried a few things and I can see the image only when in the file tutorial/templates/image.pt, I change the line <img src="../static/images/${filename}"> to <img src="../../static/images/${filename}">. I cannot seem to understand why Pyramid is forcing me to add another directory layer in my template to see the image. Can anyone explain why?
It's not really clear to me why you would put static assets in three different places in this minimal example.
With the configuration you provided in example 3, you can modify your template as follows.
<img src="${request.static_path("tutorial:static/images/")}${filename}">
That should then generate the HTML to:
<img src="http://example.com/static/images/test.jpeg">
Another option is to create a "catch all" route at the end of your routing table, which would serve the static assets directly without using a template.
from pyramid.static import static_view
static_view = static_view('/path/to/static/dir', use_subpath=True)
# .. every other add_route declaration should come
# before this one, as it will, by default, catch all requests
config.add_route('catchall_static', '/*subpath')
config.add_view('myapp.static.static_view', route_name='catchall_static')
It is also OK to configure multiple static routes, if that is what you want.
See the full documentation of Static Assets.
这篇关于URL dispatch 如何使用 Pyramid 服务静态图像文件?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
