轮播图接口

一 后端轮播图接口

在home app下的models.py中写表模型

from django.db import models

# Create your models here.


# 编写一个BaseMosel表 继承了这张表就有了这张表的字段 相当于auth的AbstractUser
class BaseModel(models.Model):
    created_time = models.DateTimeField(auto_now_add=True, verbose_name='创建时间')
    updated_time = models.DateTimeField(auto_now=True, verbose_name='最后更新时间')
    is_delete = models.BooleanField(default=False, verbose_name='是否删除')  # 软删除，不真正的删除数据，而使用字段控制
    is_show = models.BooleanField(default=True, verbose_name='是否上架')
    orders = models.IntegerField(verbose_name='优先级')

    class Meta:
        # 如果表迁移，这个表就会生成，咱们不能再数据库生成这个表，就需要加这句
        abstract = True  # 虚拟表，只用来做继承，不在数据库生成



class SlideShow(BaseModel):
    # 图片地址，图片名，图片介绍，link地址
    title = models.CharField(max_length=16, unique=True, verbose_name='名称')
    image = models.ImageField(upload_to='banner', verbose_name='图片')
    link = models.CharField(max_length=64, verbose_name='跳转链接')  # /course/
    info = models.TextField(verbose_name='详情')  # 也可以用详情表

    class Meta:
        db_table = 'luffy_slide_show'
        verbose_name_plural = '轮播图表'

    def __str__(self):
        return self.title

数据库迁移

python manage.py makemigrations
python manage.py migrate

轮播图接口

from django.shortcuts import render

# Create your views here.


from rest_framework.viewsets import GenericViewSet
from utils.list_mixinView import ListMixinView
from .models import SlideShow
from .serializer import SlideShowSer


# 重写了ListModelMixin 为了返回的格式统一
class SlideShowView(GenericViewSet, ListMixinView):
    queryset = SlideShow.objects.all().filter(is_delete=False, is_show=True).order_by('orders')
    serializer_class = SlideShowSer

重写ListModelMixin

from rest_framework.mixins import ListModelMixin
from utils.response import APIResponse


class ListMixinView(ListModelMixin):
    def list(self, request, *args, **kwargs):
        res = super().list(request, *args, **kwargs)
        return APIResponse(code=1001, msg = 'ok', result=res.data)

序列化类

from rest_framework import serializers
from .models import SlideShow


class SlideShowSer(serializers.ModelSerializer):
    class Meta:
        model = SlideShow
        fields = ['title', 'image', 'link']

使用路由分发，在home app中新建urls.py，直接copy总路由的代码

总路由

from django.contrib import admin
from django.urls import path, include
from django.views.static import serve
from django.conf import settings
from apps import home



urlpatterns = [
    path('admin/', admin.site.urls),
    path('media/', serve,
         kwargs={'document_root': settings.MEDIA_ROOT}),

    # 路由分发
    path('api/v1/home/', include('home.urls'))
]

home/urls.py

from rest_framework.routers import SimpleRouter
from home import views

router = SimpleRouter()
router.register('slide_show', views.SlideShowView, 'slide_show')


urlpatterns = [

]

urlpatterns.extend(router.urls)

后台录入数据
安装django-simpleui

pip install django-simpleui

注册

INSTALLED_APPS = [
    'simpleui',
    'django.contrib.admin',
    'django.contrib.auth',
	...
]

创建超级用户

python manage.py createsuperuser

录入数据

二 自定义配置

存放公共的配置

在settins文件夹下新建common_settings.py文件

SLIDE_SHOW_COUNT = 3

在dev.py文件中导入

from .common_settings import SLIDE_SHOW_COUNT

使用时直接导配置文件的变量即可

from django.conf import settings

# 返回的轮播图个数
queryset = SlideShow.objects.all().filter(is_delete=False, is_show=True).order_by('orders')[:settings.SLIDE_SHOW_COUNT]