Django 中的用户认证

from django.contrib.auth import authenticate
user = authenticate(username=username, password=password)
if user is not None:  # the password verified for the user
    if user.is_active:
        print (‘User is valid, active, and authenticates‘)
    else:
        print (‘The password is valid, but the account has been disabled!‘)
else:
    print (‘The username and password were incorrect.")

‘‘‘将内容按照用户是否登录区分‘‘‘
    articles = []
    if request.user.is_authenticated():
        articles = Article.objects.all()
    else:
        articles = Article.objects.filter(group__gt=1)
    return articles

{% if user.is_authenticated %}
    <i>欢迎你， <strong>{{ user.username }}</strong></i>
    <a href="/accounts/logout/" >退出</a>
{% else %}
     <a href="/accounts/login/" >登陆</a>   
{% endif %}

>>> from Blog.models import Article
>>> from django.contrib.auth.models import Group, Permission
>>> from django.contrib.contenttypes.models import ContentType
>>> # 创建许可
>>> permission = Permission.objects.create(codename=‘can_add_article‘, name=‘Can post on article‘, content_type=content_type)
>>> permission
<Permission: Blog | article | Can post on article>
>>> permission2 = Permission.objects.create(codename=‘can_modify_article‘, name=‘Can modify article‘, content_type=content_type)
>>> permission2
<Permission: Blog | article | Can modify article>
>>> permission3 = Permission.objects.create(codename=‘can_del_article‘, name=‘Can del article‘, content_type=content_type)
>>> permission3
<Permission: Blog | article | Can del article>
>>> # 创建分组
>>> group1 = Group.objects.create(name=‘can_publish‘)
>>> group1
<Group: can_publish>
>>>  # 在分组中添加许可
>>> group1.permissions.add(permission, permission2)
>>> # 创建用户
>>> from django.contrib.auth.models import User
>>> user = User.objects.create(username=‘Tom‘,password=‘password‘)
>>> user
<User: Tom>
>>> # 添加分组
>>> user.groups.add(group1)
>>> #  添加许可
>>> user.user_permissions.add(permission3)
>>> # 查看该用户的分组中的许可
>>> user.get_group_permissions()
set([u‘Blog.can_modify_article‘, u‘Blog.can_add_article‘])
>>> # 查看该用户的所有许可
>>> user.get_all_permissions()
set([u‘Blog.can_modify_article‘, u‘Blog.can_del_article‘, u‘Blog.can_add_article‘])
>>> # 验证该用户是否拥有某个许可
>>> user.has_perm(‘Blog.can_del_article‘)
True
>>> # 验证该用户石佛拥有某些许可
>>> user.has_perms([‘Blog.can_del_article‘,‘Blog.can_add_article‘, ‘Blog.can_modify_article‘])
True

# 使用装饰器 
from django.contrib.auth.decorators import permission_required
@permission_required(‘Blog.delete_article‘, login_url=‘/accounts/login/‘)
def article_delete(request, num=0):
    ‘‘‘删除日志‘‘‘
    if num:
        article = Article.objects.get(id=int(num))
    else:
        article = Article
    try:
        article.delete()
        return HttpResponseRedirect(‘/blog/article/‘)
    except Exception:
        return HttpResponseRedirect(‘/blog/article/page/‘)

# 没有使用装饰器
if request.user.has_perm(‘accounts.can_mark‘)：
    pass

{% 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 %}