day89 接口及无限极分类

无限极分类

commentfunc

data = [
    {"cat_id": 1, "name": "上海", "parent_id": 0},
    {"cat_id": 3, "name": "青浦", "parent_id": 1},

    {"cat_、id": 4, "name": "浦东", "parent_id": 1},
    {"cat_id": 2, "name": "张江", "parent_id": 4},
    {"cat_id": 5, "name": "北京", "parent_id": 0},
    {"cat_id": 6, "name": "昌平", "parent_id": 5},
]


def get_tree(data):
    lists = []
    tree = {}
    for i in data:
        tree[i["cat_id"]] = i
    for item in data:
        if not item["parent_id"]:
            # lists.append(tree[item["cat_id"]])
            lists.append(item)
        else:
            if "children" not in tree[item["parent_id"]]:
                tree[item["parent_id"]]["children"] = []
            # tree[item["parent_id"]]["children"].append(tree[item["cat_id"]])
            tree[item["parent_id"]]["children"].append(item)
    return lists

res = []
def get_son(data, level=0, parent_id=0, is_clear=True):
    if is_clear:
        res.clear()
        #假设传来的分类为1 ，现在找索引分类id为1 的子孙，但是如果不加下面这一行代码，就会遗漏自己本身
        if parent_id:
            res1.append(parent_id)
    for item in data:
        if item['parent_id'] == parent_id:
            item['level'] = level
            res.append(item)
            get_son(data, level=level + 1, parent_id=item['cat_id'], is_clear=False)
    return res

res1=[]
def get_all_son(data,parent_id,is_clear=True):
    #如果第一次进来就清空
    if is_clear:
        res1.clear()
    for item in data:
        if item["parent_id"]==parent_id:
            res1.append(item["cat_id"])
            get_all_son(data,parent_id=item["cat_id"],is_clear=False)
    return res1

# 上海
#  -青浦
#  -浦东
#  --张江
# 北京
# -昌平

views

User

from rest_framework.views import APIView

from rest_framework.response import Response
from app01 import models
from app01.wx import WxLogin
import time, hashlib
from django.core.cache import cache


class Login(APIView):
    def post(self, request):
        param = request.data
        if param.get("code"):
            data = WxLogin.get_openid(param.get("code"))
            if data:
                val = data["openid"] + "&" + data["session_key"]
                key = str(int(time.time())) + data["session_key"]
                md5 = hashlib.md5()
                md5.update(key.encode("utf-8"))
                key = md5.hexdigest()
                cache.set(key, val)
                has_user = models.Wxuser.objects.filter(openid=data["openid"]).first()
                if not has_user:
                    models.Wxuser.objects.create(openid=data["openid"])
                return Response({"code": 200, "msg": "ok", "data": {"login_key": key}})
            else:
                return Response({"code": 201, "msg": "无效的code"})
        else:
            return Response({"code": 202, "msg": "缺少参数"})

Banner

from rest_framework.views import APIView

from rest_framework.response import Response
from app01 import models
from app01.my_ser import Banner_ser


class List(APIView):
    def post(self, request):
        data = models.Banner.objects.filter(is_show=True).order_by("-w_order")
        data = Banner_ser.Banner_ser(instance=data, many=True, context={"request": request}).data
        print("list",data)
        return Response({
            "code": 200,
            "msg": "ok",
            "data": data
        })

Goods

from rest_framework.views import APIView

from rest_framework.response import Response
from app01 import models
from app01.my_ser import Goods_ser, Category_ser
from app01.comment import func


class Hotlist(APIView):
    def post(self, request):
        data = models.Product.objects.filter(disabled=True).order_by("-buy_count", "-w_order")
        data = Goods_ser.Good_ser(instance=data, many=True, context={"request": request}).data
        print("hotgoods/list", data)
        return Response({"code": 200, "msg": "ok", "data": data})


class List(APIView):
    def post(self, request):
        param = request.data
        if param.get("category_id"):
            data = models.Category.objects.filter(is_show=True)
            data = Category_ser.Category_ser(instance=data, many=True, context={"request": request}).data
            all_id = func.get_all_son(data, param.get("category_id"))
            # 查出分类属于all_id的所有值
            data = models.Product.objects.filter(disabled=True, product_id__in=all_id).order_by("-w_order")
            data = Goods_ser.Good_ser(instance=data, many=True, context={"request": request}).data
            print("goods/list",data)
            return Response({"code": 200, "msg": "ok", "data": data})
        else:
            return Response({"code": 201, "msg": "缺少参数"})

Category

from rest_framework.views import APIView

from rest_framework.response import Response
from app01 import models
from app01.my_ser import Category_ser
class List(APIView):
    def post(self,request):
        data=models.Category.objects.filter(is_show=True)
        data=Category_ser.Category_ser(instance=data,many=True,context={"request":request}).data
        print("Category/list",data)
        return Response({"code":200,"msg":"ok","data":data})

my_ser

Banner_ser

from rest_framework import serializers
from app01 import models


class Banner_ser(serializers.ModelSerializer):
    product_id=serializers.IntegerField(source="product.product_id")
    image_url=serializers.ImageField(source="image.image_url")
    class Meta:
        model = models.Banner
        fields = "__all__"

Category_ser

from rest_framework import serializers
from app01 import models


class Category_ser(serializers.ModelSerializer):
    product_id = serializers.IntegerField(source="product.product_id")
    parent_id = serializers.SerializerMethodField()

    def get_parent_id(self, obj):
        if obj.parent_id is None:
            return 0
        else:
            return obj.parent_id

    class Meta:
        model = models.Category
        fields = "__all__"

Goods_ser

from rest_framework import serializers
from app01 import models


class Good_ser(serializers.ModelSerializer):
    image_url = serializers.ImageField(source="image.image_url")

    class Meta:
        model = models.Product
        fields = "__all__"