我一直在尝试金字塔，这个遍历的东西让我发疯了。我基本上是在为购物车制作一个控制面板，这是我想到的基本结构。
登录页面
localhost:6543/admin_login
登录成功后
localhost:6543/admin/home
查看所有现有产品
localhost:6543/admin/product
编辑产品 X
localhost:6543/admin/product/edit/1
所以我的文件夹结构是这样的（大写文件是模型）
- 我的车
- 资源.py
- 管理员.py
- 产品.py
- 静止的
- 模板
- 意见
- __init__.py
- 管理员.py
- 根.py
我的资源.py
from pyramid.security import Authenticated
from pyramid.security import Allow
from pyramid.response import Response
class Root(object):
__name__ = ''
__parent__ = None
def __init__(self, request):
pass
def __getitem__(self, key):
if key == 'admin_login':
return Admin()
elif key == 'admin':
return Admin()
raise KeyError
class Admin(object):
__name__ = ''
__parent__ = Root
__acl__ = [(Allow, Authenticated, 'admin')]
def __init__(self):
pass
在views/__init.py中，它只是一个空白文件。至于root.py，它只是一个httpexceptions.HTTPNOTFOUND，404代码
为了views/admin.py
from pyramid.view import view_config, render_view
import mycart.resources
from pyramid.httpexceptions import HTTPNotFound, HTTPFound
from mycart.views.root import strip_tags
from pyramid_mailer import get_mailer
from pyramid_mailer.message import Message
from pyramid.security import remember , forget , authenticated_userid
from pyramid.events import subscriber , BeforeRender
from mycart.Admin import Admin
from mycart.Product import Product
@view_config(context='mycart:resources.Admin', request_method='POST', renderer='admin/login.jinja2')
def login_post(context, request):
if 'btnLogin' in request.params:
token = request.session.get_csrf_token()
login = request.params['txtLogin']
password = request.params['txtPassword']
admin = Admin(login, request)
if admin.validate_user( password):
record = admin.find_user_by_login( login )
request.session['bs_admin_id'] = str(record['_id'])
request.session['bs_admin_name'] = record['usr']['fname'] + ' ' + record['usr']['lname'];
request.session['bs_admin_type'] = record['usr']['type']
headers = remember(request, login )
return HTTPFound('/admin/home', headers=headers)
message = 'Failed login'
return {'message': message, 'url': '/admin_login', 'page_title': 'Failed Login'}
@view_config(context='mycart:resources.Admin', name="home", renderer='admin/home.jinja2', permission='admin')
def home(context, request):
logged_in = authenticated_userid(request)
url = request.path_info
admin = Admin( logged_in, request )
rec = admin.find_user_by_objectid( request.session['bs_admin_id'] ) ;
return { 'firstname': rec['usr']['fname'] }
@view_config(context='mycart:resources.Admin', name="product", renderer='admin/product_listing.jinja2', permission='admin')
def product_list(context, request):
print ('yes, showing product listing requested by ', request.session['bs_admin_id'] )
登录后，我将 url 指向 localhost:6543/admin/product，我注意到它仍然呈现主页，而不是产品页面。
我知道我错过了一些东西，但我似乎无法找出原因。浏览http://docs.pylonsproject.org/projects/pyramid/en/1.3-branch/narr/traversal.html，我知道我在正确的轨道上，因为可能存在任意部分。
我尝试将 resources.py 修改为以下
.....
class Admin(object):
__name__ = ''
__parent__ = Root
__acl__ = [(Allow, Authenticated, 'admin')]
def __init__(self):
pass
def __getitem__(self, key):
if key == 'product':
print ("WOOT! Listing products")
## this is the part where I don't know what should I return or set or how should I hook it up with view_config
if key == 'home':
print ("yes, I'm home!")
## this is the part where I don't know what should I return or set or how should I hook it up with view_config
raise KeyError
对于这一部分，我取得了一些进展，它肯定会在控制台中打印相应的消息。但是，我不知道应该如何将它与 view_configs 连接起来，如果需要进行任何更改，view_configs 的参数应该是什么。
我不知道版本是否会影响任何东西，但无论如何，我使用的是 python 3.3
任何帮助将不胜感激。谢谢！
这是我在多年 java 之后第一次用 python 编码。所以可能有一些我对金字塔/python不熟悉的术语/概念。
好吧，我想我有点想解决这个遍历的事情了。通过http://docs.pylonsproject.org/projects/pyramid/en/1.4-branch/narr/traversal.html阅读，有两件事引起了我的注意。
例如，如果路径信息序列是 ['a', 'b', 'c']：
- Traversal starts by acquiring the root resource of the application by calling the root factory. The root factory can be configured to return whatever object is appropriate as the traversal root of your application.
- Next, the first element ('a') is popped from the path segment sequence and is used as a key to lookup the corresponding resource in the root. This invokes the root resource’s __getitem__ method using that value ('a') as an argument.
- If the root resource “contains” a resource with key 'a', its __getitem__ method will return it. The context temporarily becomes the “A” resource.
所以基于 localhost:6543/admin/products，view_config 的设置如下：
@view_config(context=Admin, name='products', .... )
因此，在对 resources.py 进行更改之后
## class Root(object):
....
class ProductName(object):
def __init__(self, _key):
pass
class Products(object):
__name__ = ''
__parent__ = Root
def __init__(self):
pass
def __getitem__(self, key):
print ('products: ', key)
if key == 'add':
return ProductName(key)
print ('Approaching KeyError')
raise KeyError
class Admin(object):
__name__ = ''
__parent__ = Root
__acl__ = [(Allow, Authenticated, 'admin')]
def __init__(self):
pass
def __getitem__(self, key):
if key == 'products':
print ('admin: ', key)
return Products()
raise KeyError
在views/admin.py
@view_config(context=Admin, name='products', renderer='admin/products.jinja2', permission = 'admin')
def product_add(context, request):
print 'hey products_add'
return { 'msg': ''}
不知何故，它不是呈现产品模板，而是呈现默认的 404。