标签:shell name get manage datetime objects py Event Guest
1、进入shell模式
python3 manage.py shell
2、基本数据访问
from loginApp.models import Event,Guest #导入loginAPP应用下的models.py中的event和guest表 Event.objects.all() #获取event表中的所有对象 Guest.objects.all()
2、插入数据
>>> e1 = Event(id=2,name='aa的pro发布会',limit=10,status=True,address='山东泰山',start_time=datetime(2021,2,15,0,0,0)) >>> e1.save() /Users/bjhl/stone-web/lib/python3.6/site-packages/django/db/models/fields/__init__.py:1447: RuntimeWarning: DateTimeField Event.start_time received a naive datetime (2021-02-15 00:00:00) while time zone support is active. RuntimeWarning) UTC有兴趣可查,可以在USE_TZ = False 关闭
>>> quit()
再次进入shell模式查看,才能看到成功报错效果
>>> from datetime import datetime >>> Event.objects.create(id=3,name='bb的pro发布会',limit=30,status=True,address='Asia',start_time=datetime(2021,2,15,0,0,59)) #创建并保存 /Users/bjhl/stone-web/lib/python3.6/site-packages/django/db/models/fields/__init__.py:1447: RuntimeWarning: DateTimeField Event.start_time received a naive datetime (2021-02-15 00:00:59) while time zone support is active. RuntimeWarning) <Event: bb的pro发布会> >>> Guest.objects.create(realname="juju",phone=16812341234,email='andy@mail.com',sign=False,event_id=3) <Guest: juju> >>>
3、查询数据(table.objects.get精确匹配)
>>> Event.objects.get(name="aa的pro发布会") <Event: aa的pro发布会> >>> e1=Event.objects.get(name="aa的pro发布会") >>> e1.email Traceback (most recent call last): File "<console>", line 1, in <module> AttributeError: 'Event' object has no attribute 'email' >>> e1.address '山东泰山' >>> e1.start_time datetime.datetime(2021, 2, 15, 0, 0, tzinfo=<UTC>) >>> e1.limit 10
4、 模糊匹配
>>> Guest.objects.select_for_update().filter(phone='15088132356').update(realname='hjahah') 1 >>> Guest.objects.select_for_update().filter(phone='15088132356') <QuerySet [<Guest: hjahah>]>
>>> e2 =Event.objects.filter(name__contains="发布会") #name__contains是双下划线,匹配到就返回一个对象列表。匹配不到,直接返回[]
>>> e2 <QuerySet [<Event: 菲菲的新品发布会>, <Event: aa的pro发布会>, <Event: bb的pro发布会>]> >>>
5、删除数据
>>> Event.objects.get(name="bb的pro发布会") <Event: bb的pro发布会> >>> e3 =Event.objects.get(name="bb的pro发布会") >>> e3 <Event: bb的pro发布会> >>> e3.delete() (2, {'loginApp.Guest': 1, 'loginApp.Event': 1}) >>> e3 =Event.objects.get(name="bb的pro发布会") Traceback (most recent call last): File "<console>", line 1, in <module> File "/Users/bjhl/stone-web/lib/python3.6/site-packages/django/db/models/manager.py", line 85, in manager_method return getattr(self.get_queryset(), name)(*args, **kwargs) File "/Users/bjhl/stone-web/lib/python3.6/site-packages/django/db/models/query.py", line 379, in get self.model._meta.object_name loginApp.models.DoesNotExist: Event matching query does not exist. >>> e2 =Event.objects.filter(name__contains="发布会") >>> e2 <QuerySet [<Event: 菲菲的新品发布会>, <Event: aa的pro发布会>]>
6、更新数据
>>> Guest.objects.select_for_update().filter(phone='15088132356').update(realname='hjahah') 1 >>> Guest.objects.select_for_update().filter(phone='15088132356') <QuerySet [<Guest: hjahah>]>
标签:shell,name,get,manage,datetime,objects,py,Event,Guest 来源: https://www.cnblogs.com/feifei-cyj/p/14404240.html
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