动态获取关联两个Django模型的字段名

from django.contrib.contenttypes.fields import GenericForeignKey
from django.contrib.contenttypes.models import ContentType
from django.db import models

class ModelA(models.Model):
    model_b_type = models.ForeignKey(ContentType, on_delete=models.CASCADE)
    model_b_id = models.PositiveIntegerField()
    model_b = GenericForeignKey('model_b_type', 'model_b_id')

    # 其他字段

class ModelB(models.Model):
    # 字段定义

def get_related_fields(model_a, model_b):
    related_fields = []
    for field in model_a._meta.fields:
        if isinstance(field, GenericForeignKey) and field.ct_field == 'model_b_type':
            related_fields.append(field.name)
    return related_fields

related_fields = get_related_fields(ModelA, ModelB)
print(related_fields)