Django 如何在queryset上添加字段和值_Django_Orm_Django Queryset

Django 如何在queryset上添加字段和值

django orm

Django 如何在queryset上添加字段和值,django,orm,django-queryset,Django,Orm,Django Queryset,有一个模型 class Computer(models.Model): mouse = models.CharField(max_length=15, db_index=True) keyboard = models.CharField(max_length=15, db_index=True) Computer.objects.all().values() > [ {cpu: 'c1', keyboard: 'k1'}, {cpu: 'c2', keyb

有一个模型

class Computer(models.Model):
    mouse = models.CharField(max_length=15, db_index=True)
    keyboard = models.CharField(max_length=15, db_index=True)


Computer.objects.all().values()
> [ 
   {cpu: 'c1', keyboard: 'k1'},
   {cpu: 'c2', keyboard: 'k2'}
  ]

这是迪克特

cpuToMouse = {'c1': 'm1', 'c2': 'm2'}

我想添加字段和值

computer = Computer.objects.all()

for com in computer:
    com.mouse = cpuToMouse[com.cpu]

和过滤

computer.filter(mouse='m2')

但是。。不工作

我试着注释

computer.annotate(mouse=F(cpuToMouse[com.cpu])

但它也不起作用