Python Django ORM基本增删改查

工程下的urls.py中增加如下：
from cmdb import views as cmdb #要把你要操作的项目import进来
urlpatterns = [
    url(r'orm', cmdb.orm) #增加这行
]

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项目下的views.py中增加：
from cmdb import models # 先将项目里的models加载进来

def orm(request):
# create
    # 1 way   best use.
    #models.UserInfo.objects.create(username='xiaojianzheng',password='123')

    # 2 way
    '''
    dict = {'username':'ciki','password':'123'}
    models.UserInfo.objects.create(**dict)
    '''

    # 3 way
    '''
    obj = models.UserInfo(username='lss',password='123')
    obj.save()
    '''
# select
    # select all data use all()
    '''
    result = models.UserInfo.objects.all()
    for x in result:
        print(x.id,x.username,x.password)

    #result, QuerySet => Django => []
    #< QuerySet[ < UserInfo: UserInfo object >, < UserInfo: UserInfo object >, < UserInfo: UserInfo object >
    '''
# delete
    #models.UserInfo.objects.filter(id=3).delete()

# update
    #models.UserInfo.objects.filter(id=5).update(username='lss',password='456')

    result = models.UserInfo.objects.all()
    for x in result:
        print(x.id, x.username, x.password)
    return HttpResponse('ORM opration success.')