数据的增删改
增:book = BookInfo() book.save() 和BookInfo.objects.create()
book = BookInfo() book.save()
BookInfo.objects.create()
删:book.delete() 和BookInfo.objects.get().delete()
book.delete()
BookInfo.objects.get().delete()
改:book.name='xxx' book.save() 和 BookInfo.objects.get().update(name=xxx)
book.name='xxx' book.save()
BookInfo.objects.get().update(name=xxx)
数据的查询
基础查询
F对象和Q对象
关联查询
查询集QuerySet