后端准备home接口

后端准备home接口

一 创建home-app

创建app

Yanapi\Yanapi\apps>  python ../../manage.py startapp home

注册app

INSTALLED_APPS = [
	...
    'apps.home',
]

二 准备数据库

utils/model.py

from django.db import models
class BaseModel(models.Model):
    orders = models.IntegerField(verbose_name='显示顺序')
    created_time = models.DateTimeField(verbose_name="创建时间",auto_now_add=True,blank=True)
    updated_time = models.DateTimeField(verbose_name="更新时间",auto_now=True,blank=True)
    is_show = models.BooleanField(verbose_name="是否上架",default=False)
    is_delete = models.BooleanField(verbose_name="逻辑删除",default=False)
    class Meta:
        abstract = True

home/model.py

from django.db import models
from utils.model import BaseModel


class Banner(BaseModel):
    name = models.CharField(verbose_name='标题', max_length=16)
    note = models.CharField(verbose_name='标题', max_length=150)
    #       存的时候 取得时候会自己进行很多处理
    image = models.ImageField(verbose_name='图片', upload_to='banner')
    link = models.CharField(verbose_name='跳转连接', max_length=64)

    class Meta:
        db_table = 'yanapi_banner'
        verbose_name = '轮播图表'
        verbose_name_plural = verbose_name

    def __str__(self):
        return self.name

迁移数据库

project\Yanapi> python manage.py makemigrations
project\Yanapi> python manage.py migrate

三 准备接口

主urls

from django.contrib import admin
from django.urls import path,re_path,include

# from django.conf import settings
from settings import dev
from django.views.static import serve

urlpatterns = [
    # path('/',)
    path('admin/', admin.site.urls),
    # 这个只负责访问
    re_path(r'media/(?P<path>.*)',serve, {'document_root':dev.MEDIA_ROOT}),

    # 路由分发
    path(r'home/',include('apps.home.urls'))
]

home/urls

from django.urls import path
from . import views

urlpatterns = [
    path('banners/', views.BannerListAPIView.as_view()),

]

home/serializers.py

from rest_framework.serializers import ModelSerializer

from . import models


class BannerModelSerializer(ModelSerializer):
    class Meta:
        model = models.Banner
        fields = ('image', 'link')

home/views.py

from django.shortcuts import render
from rest_framework.generics import ListAPIView

from . import models, serializers


class BannerListAPIView(ListAPIView):
    queryset = models.Banner.objects.filter(is_show=True, is_delete=False).order_by('-orders')
    serializer_class = serializers.BannerModelSerializer