github 链接：https://github.com/heywbj/django-rest-framework-recursive
无限递归序列化（python默认最大递归层数998）可指定递归层数
serializer.py
from rest_framework_recursive.fields import RecursiveField
class DepartmentTreeSerializer(serializers.Serializer):
id = serializers.IntegerField()
departmentname = serializers.CharField(max_length=256)
parentdepartment = serializers.IntegerField(source='parentdepartment.id', allow_null=True)
sub = serializers.ListField(source='get_sub_departments', child=RecursiveField())
class Meta:
model = Department
models.py
class Department(BaseModel):
departmentname = models.CharField(max_length=128,
verbose_name="部门表名字",
null=True,
blank=True)
header = models.ForeignKey(to="Employees",
verbose_name="部门负责人(Employee)",
null=True,
blank=True,
on_delete=models.SET_NULL,
related_name="manage_departments")
parentdepartment = models.ForeignKey(to="self",
verbose_name="父部门",
on_delete=models.SET_NULL,
null=True,
blank=True,
related_name="sub")
create_people = models.ForeignKey(User,
verbose_name="部门创建者",
on_delete=models.SET_NULL,
null=True,
blank=True,
related_name="create_people")
is_root = models.BooleanField(default=False)
class Meta:
verbose_name = "部门表"
verbose_name_plural = verbose_name
def __str__(self):
return self.departmentname
def get_sub_departments(self):
return self.sub.filter(tags=0)
def get_employees_in_department(self):
return self.employees_in_department.filter(tags=0)
def has_employee(self, employee_id):
return self.get_employees_in_department().filter(id=employee_id).count() > 0
def is_header(self, employee_id):
if employee_id > 0 and getattr(self.header, 'id', -1) == employee_id:
return True
return False
data
{
"code": 0,
"error_msg": "",
"data": {
"count": 1,
"next": null,
"previous": null,
"results": [
{
"id": 6,
"departmentname": "f",
"parentdepartment": null,
"sub": [
{
"id": 1,
"departmentname": "a",
"parentdepartment": 6,
"sub": []
},
{
"id": 3,
"departmentname": "洗澡部",
"parentdepartment": 6,
"sub": []
},
{
"id": 4,
"departmentname": "d",
"parentdepartment": 6,
"sub": []
},
{
"id": 14,
"departmentname": "砸蛋部",
"parentdepartment": 6,
"sub": []
},
{
"id": 15,
"departmentname": "8",
"parentdepartment": 6,
"sub": []
},
{
"id": 11,
"departmentname": "dddd",
"parentdepartment": 6,
"sub": []
},
{
"id": 5,
"departmentname": "e",
"parentdepartment": 6,
"sub": []
},
{
"id": 10,
"departmentname": "l",
"parentdepartment": 6,
"sub": []
},
{
"id": 9,
"departmentname": "n",
"parentdepartment": 6,
"sub": [
{
"id": 18,
"departmentname": "会计部",
"parentdepartment": 9,
"sub": []
},
{
"id": 20,
"departmentname": "会计部2",
"parentdepartment": 9,
"sub": []
}
]
},
{
"id": 8,
"departmentname": "h",
"parentdepartment": 6,
"sub": [
{
"id": 19,
"departmentname": "会计部1",
"parentdepartment": 8,
"sub": []
}
]
},
{
"id": 7,
"departmentname": "g",
"parentdepartment": 6,
"sub": [
{
"id": 17,
"departmentname": "枫叶路",
"parentdepartment": 7,
"sub": []
},
{
"id": 21,
"departmentname": "eat部",
"parentdepartment": 7,
"sub": [
{
"id": 22,
"departmentname": "fffffffff",
"parentdepartment": 21,
"sub": []
}
]
}
]
},
{
"id": 16,
"departmentname": "小虎队",
"parentdepartment": 6,
"sub": []
}
]
}
]
}
}
example
from rest_framework import serializers
from rest_framework_recursive.fields import RecursiveField
class TreeSerializer(serializers.Serializer):
name = serializers.CharField()
children = serializers.ListField(child=RecursiveField())
Requirements
Python (Tested on 2.7, 3.4, 3.6) Django (Tested on 1.8, 1.9, 2.0) Django REST Framework (Tested on 3.3, 3.7)
Installation
pip install djangorestframework-recursive
来源：https://www.cnblogs.com/tangda/p/12190027.html