Django 自关联递归序列化模块 django-rest-frame-recursive模块

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