如何在Django中访问一个模型的值并传递给另一个模型？

from django.db import models

class ModelA(models.Model):
    value = models.CharField(max_length=100)

class ModelB(models.Model):
    # 其他字段...

from django.db import models

class ModelB(models.Model):
    model_a = models.ForeignKey(ModelA, on_delete=models.CASCADE)
    # 其他字段...

model_b_instance = ModelB.objects.get(id=1)
value = model_b_instance.model_a.value