正在序列化其他模型中的特定字段

Question

我试图从policy模型中序列化policy_length，coverage_amount，并在使用Insure模型的序列化程序中使用它。

我正在使用保单和保险模型：

策略模型

class Policy(TimeStampedModel):
policy_length = models.FloatField(max_length=2, blank=True, null=True)
coverage_amount = models.FloatField(max_length=256, blank=True, null=True)

保险模型

class Insuree(TimeStampedModel):
user = models.OneToOneField(
'User', related_name='insuree', null=False, on_delete=models.CASCADE,
primary_key=True)
coverage_amount = models.ForeignKey(Policy, on_delete=models.CASCADE, max_length=256, blank=True, null=True)
policy_length = models.ForeignKey(Policy, on_delete=models.CASCADE, max_length=2, blank=True, null=True)

类PolicySelectionSerializer(serializers.ModelSerializer(:

class Meta:
model = Insuree
fields = ('age', 'gender', 'disposable_income') #Current fields
fields = ('age','gender',disposable_income', 'policy_length', 'coverage_amount') #The field I need and want to do

Answer 1

您可以使用嵌套序列化程序。

PolicySerializer(ModelSerializer)
class Meta:
model = Policy
fields = ( 'policy_length', 'coverage_amount')

InsureeSerializer(ModelSerializer)
class Meta:
policy = PolicySerializer(many = True)
model = Insuree
fields = ('age', 'gender', 'disposable_income', 'policy',)