部门Django讲座用的讲稿

10. toage @register.filter def toage( birthday): ‘’’ >>> toage( datetime(1982,3,23) ) 27 ‘’’ return (datetime.now()-birthday).days()/365

12. current_time @register.simple_tag def current_time(format_string): return datetime.now().strftime(format_string)

13. ORM 文章 图片 评论

16. 切换认证 AUTHENTICATION_BACKENDS=( 'sinard.ldapauth.LDAPBackend', #'django.contrib.auth.backends.ModelBackend', )

17. Auth {% if user.is_authenticated %} <p>Welcome, {{ user.username }}. Thanks for logging in.</p>{% else %} <p>Welcome, new user. Please log in.</p>{% endif %}

18. Permissions {% if perms.foo %} <p>You have permission to do something in the foo app.</p> {% if perms.foo.can_vote %} <p>You can vote!</p> {% endif %} {% if perms.foo.can_drive %} <p>You can drive!</p> {% endif %}{% else %} <p>You don't have permission to do anything in the foo app.</p>{% endif %}

19. in Views def my_view(request): if not (request.user.is_authenticated() and request.user.has_perm('polls.can_vote')): return HttpResponse(&quot;You can't vote in this poll.&quot;) # ...

20. @login_required from django.contrib.auth.decorators import login_required@login_requireddef my_view(request): # ...

21. Form >>> class CommentForm(forms.Form):... name = forms.CharField(initial='class')... url = forms.URLField()... comment = forms.CharField()>>> f = CommentForm(initial={'name': 'instance'}, auto_id=False)>>> print f<tr><th>Name:</th><td><input type=&quot;text&quot; name=&quot;name&quot; value=&quot;instance&quot; /></td></tr><tr><th>Url:</th><td><input type=&quot;text&quot; name=&quot;url&quot; /></td></tr><tr><th>Comment:</th><td><input type=&quot;text&quot; name=&quot;comment&quot; /></td></tr>

22. cleaned_data >>> data = {'subject': '',... 'message': 'Hi there',... 'sender': 'invalid e-mail address',... 'cc_myself': True}>>> f = ContactForm(data)>>> f.is_valid()False>>> f.cleaned_data...AttributeError: 'ContactForm' object has no attribute 'cleaned_data'

23. cleaned_data >>> data = {'subject': 'hello',... 'message': 'Hi there',... 'sender': ' [email_address] ',... 'cc_myself': True,... 'extra_field_1': 'foo',... 'extra_field_2': 'bar',... 'extra_field_3': 'baz'}>>> f = ContactForm(data)>>> f.is_valid()True>>> f.cleaned_data # Doesn't contain extra_field_1, etc.{'cc_myself': True, 'message': u'Hi there', 'sender': u' [email_address] ', 'subject': u 'hello'}

26. Django Admin http://docs.djangoproject.com/en/dev/ref/contrib/admin/# ref-contrib-admin

27. admin.py from django.contrib import adminfrom myproject.myapp.models import Authoradmin.site.register(Author)

32. Thanks