Django-1.3的helloworld5 view

haoningabc

admin的模板在Python26\Lib\site-packages\django\contrib\admin\templates
G:.│  latestbooks.cgi│  └─mysite    │  manage.py    │  settings.py    │  urls.py    │  __init__.py    │      └─polls            admin.py            models.py            tests.py            views.py            __init__.py
setting.py 配置文件都配置在这里：数据库，url等

urls.py映射规则
models.py里是数据库映射object
views.py类似servlet，可以加载模板
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mysite\polls\views.py：
# Create your views here.from polls.models import Pollfrom django.http import HttpResponsedef index(request):#    return HttpResponse("Hello, world. You're at the poll index.")    latest_poll_list = Poll.objects.all().order_by('-pub_date')[:5]    output = ', '.join([p.question for p in latest_poll_list])    return HttpResponse(output)def detail(request, poll_id):    return HttpResponse("You're looking at poll %s." % poll_id)def results(request, poll_id):    return HttpResponse("You're looking at the results of poll %s." % poll_id)def vote(request, poll_id):    return HttpResponse("You're voting on poll %s." % poll_id)
在settings.py里面

TEMPLATE_DIRS设置模板的路径

ROOT_URLCONF = 'mysite.urls'
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#注意是绝对路径，相对不可以TEMPLATE_DIRS = (    "G:/java/python/templates")
如果这里不配置，会去app下的templates文件夹找，如果两个地方都有，以配置文件中定义的为准。
在G:/java/python/templates下
建立目录polls/index.html
{% if latest_poll_list %}    <ul>    {% for poll in latest_poll_list %}        <li><a href="/polls/{{ poll.id }}/">{{ poll.question }}</a></li>    {% endfor %}    </ul>{% else %}    <p>No polls are available.</p>{% endif %}

修改views.py
from django.template import Context, loaderfrom polls.models import Pollfrom django.http import HttpResponsedef index(request):    latest_poll_list = Poll.objects.all().order_by('-pub_date')[:5]    t = loader.get_template('polls/index.html')    c = Context({        'latest_poll_list': latest_poll_list,    })    return HttpResponse(t.render(c))
或
from django.shortcuts import render_to_responsefrom polls.models import Polldef index(request):    latest_poll_list = Poll.objects.all().order_by('-pub_date')[:5]    return render_to_response('polls/index.html', {'latest_poll_list': latest_poll_list})
注意import不同
----------------处理404-----------------
from django.http import Http404def detail(request, poll_id):    try:        p = Poll.objects.get(pk=poll_id)    except Poll.DoesNotExist:        raise Http404    return render_to_response('polls/detail.html', {'poll': p})
或
from django.shortcuts import render_to_response, get_object_or_404# ...def detail(request, poll_id):    p = get_object_or_404(Poll, pk=poll_id)    return render_to_response('polls/detail.html', {'poll': p})