# view文件

from django.shortcuts import render

from app.models import Menu

# Create your views here.

from django.http import JsonResponse

def index(request):

data = get_menu_tree()

return JsonResponse({"list":data})

# 从数据库获取菜单树

def get_menu_tree():

tree = []

menus = Menu.objects.filter(parent=None)

for menu in menus:

menu_data = {

"label":menu.name,

"children":[]

}

childs = Menu.objects.filter(parent=menu)

if childs:

menu_data["children"] = get_child_menu(childs)

tree.append(menu_data)

return tree

# 递归获取所有的子菜单

def get_child_menu(childs):

children = []

if childs:

for child in childs:

data = {

"label":child.name,

"children":[]

}

_childs = Menu.objects.filter(parent=child)

if _childs:

data["children"].append(get_child_menu(_childs))

children.append(data)

return children

# models.py

from django.db import models

class User(models.Model):

username = models.CharField(max_length=16) #创建一个字段，类型为字符串类型，最大长度为16

password = models.CharField(max_length=32) #创建一个字段，类型为字符串类型，最大长度为32

def __unicode__(self):

return self.username

class Menu(models.Model):

name = models.CharField(max_length=64, verbose_name="菜单名称") # 菜单名称

fullName = models.CharField(max_length=512, null=True, blank=True) # 菜单全称

path = models.CharField(max_length=64, null=True, blank=True) # 映射数据路径

parent = models.ForeignKey("Menu", on_delete=models.DO_NOTHING, null=True, blank=True) # 父节点

datum = models.CharField(max_length=64, null=True, blank=True) # 参考基准

type = models.CharField(max_length=64, null=True, blank=True) # 菜单类型

remark = models.CharField(max_length=64, null=True, blank=True) # 备注

def __unicode__(self):

return self.name

def __str__(self):

return self.name

class Meta():

verbose_name = "菜单"

verbose_name_plural = verbose_name