python Django模型 - 视图 - 控制器架构示例
Posted
tags:
篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了python Django模型 - 视图 - 控制器架构示例相关的知识，希望对你有一定的参考价值。
"""
jQuery templates use constructs like:
{{if condition}} print something{{/if}}
Or like:
{% if condition %} print {%=object.something %}{% endif %}
This, of course, completely screws up Django templates,
because Django thinks {{ and }} mean something.
Wrap {% verbatim %} and {% endverbatim %} around those
blocks of jQuery templates and this will try its best
to output the contents with no changes.
"""
from django import template
register = template.Library()
class VerbatimNode(template.Node):
def __init__(self, text):
self.text = text
def render(self, context):
return self.text
@register.tag
def verbatim(parser, token):
text = []
while 1:
token = parser.tokens.pop(0)
if token.contents == 'endverbatim':
break
if token.token_type == template.TOKEN_VAR:
text.append('{{ ')
elif token.token_type == template.TOKEN_BLOCK:
text.append('{%')
text.append(token.contents)
if token.token_type == template.TOKEN_VAR:
text.append(' }}')
elif token.token_type == template.TOKEN_BLOCK:
if not text[-1].startswith('='):
text[-1:-1] = [' ']
text.append(' %}')
return VerbatimNode(''.join(text))# -*- coding: utf-8 -*-
from django.contrib.auth.decorators import login_required
from django.utils.cache import patch_response_headers
from django.utils.decorators import method_decorator
from django.views.decorators.cache import cache_page, never_cache
from django.views.decorators.csrf import csrf_exempt
class NeverCacheMixin(object):
@method_decorator(never_cache)
def dispatch(self, *args, **kwargs):
return super(NeverCacheMixin, self).dispatch(*args, **kwargs)
class LoginRequiredMixin(object):
@method_decorator(login_required)
def dispatch(self, *args, **kwargs):
return super(LoginRequiredMixin, self).dispatch(*args, **kwargs)
class CSRFExemptMixin(object):
@method_decorator(csrf_exempt)
def dispatch(self, *args, **kwargs):
return super(CSRFExemptMixin, self).dispatch(*args, **kwargs)
class CacheMixin(object):
cache_timeout = 60
def get_cache_timeout(self):
return self.cache_timeout
def dispatch(self, *args, **kwargs):
return cache_page(self.get_cache_timeout())(super(CacheMixin, self).dispatch)(*args, **kwargs)
class CacheControlMixin(object):
cache_timeout = 60
def get_cache_timeout(self):
return self.cache_timeout
def dispatch(self, *args, **kwargs):
response = super(CacheControlMixin, self).dispatch(*args, **kwargs)
patch_response_headers(response, self.get_cache_timeout())
return response
class JitterCacheMixin(CacheControlMixin):
cache_range = [40, 80]
def get_cache_range(self):
return self.cache_range
def get_cache_timeout(self):
return random.randint(*self.get_cache_range())# models.py (the database tables)
from django.db import models
class Book(models.Model):
name = models.CharField(max_length=50)
pub_date = models.DateField()
# views.py (the business logic)
from django.shortcuts import render
from models import Book
def latest_books(request):
book_list = Book.objects.order_by('-pub_date')[:10]
return render(request, 'latest_books.html', {'book_list': book_list})
# urls.py (the URL configuration)
from django.conf.urls.defaults import *
import views
urlpatterns = patterns('',
(r'^latest/$', views.latest_books),
)
# latest_books.html (the template)
<html><head><title>Books</title></head>
<body>
<h1>Books</h1>
<ul>
{% for book in book_list %}
<li>{{ book.name }}</li>
{% endfor %}
</ul>
</body></html>以上是关于python Django模型 - 视图 - 控制器架构示例的主要内容，如果未能解决你的问题，请参考以下文章