Python轮播图与导航栏功能的实现流程全讲解_python_

STATIC_URL = '/static/' # 设置django的静态文件目录 # STATICFILES_DIRS = [ # os.path.join(BASE_DIR,"static") # ] # 项目中存储上传文件的根目录[暂时配置]，注意，uploads目录需要手动创建否则上传文件时报错 MEDIA_ROOT = os.path.join(BASE_DIR, "uploads") # 访问上传文件的url地址前缀 MEDIA_URL = "/media/" 

from django.contrib import admin from django.urls import path, re_path, include from django.views.static import serve from django.conf import settings import xadmin xadmin.autodiscover() # version模块自动注册需要版本控制的 Model from xadmin.plugins import xversion xversion.register_models() urlpatterns = [ # path('admin/', admin.site.urls), path(r'xadmin/', xadmin.site.urls), re_path(r'media/(?P.*)', serve, {"document_root": settings.MEDIA_ROOT}), ]

# Build paths inside the project like this: os.path.join(BASE_DIR, ...) BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__))) # 新增一个系统导包路径 import sys #sys.path使我们可以直接import导入时使用到的路径，所以我们直接将我们的apps路径加到默认搜索路径里面去，那么django就能直接找到apps下面的应用了 sys.path.insert(0,os.path.join(BASE_DIR,"apps")) ... INSTALLED_APPS = [ # 注意，加上drf框架的注册 ... 'rest_framework', ... # 子应用 'home', ] 

from django.db import models # Create your models here. class Banner(models.Model): """轮播广告图模型""" # 模型字段 title = models.CharField(max_length=500, verbose_name="广告标题") link = models.CharField(max_length=500, verbose_name="广告链接") # upload_to 设置上传文件的保存子目录,将来上传来的文件会存到我们的media下面的banner文件夹下，这里存的是图片地址。 image_url = models.ImageField(upload_to="banner", null=True, blank=True, max_length=255, verbose_name="广告图片") remark = models.TextField(verbose_name="备注信息") is_show = models.BooleanField(default=False, verbose_name="是否显示") # 将来轮播图肯定会更新，到底显示哪些 orders = models.IntegerField(default=1, verbose_name="排序") # 轮播图优先显示，default数字越大越优先显示 is_deleted = models.BooleanField(default=False, verbose_name="是否删除") # 表信息声明 class Meta: db_table = "ly_banner" verbose_name = "轮播广告" verbose_name_plural = verbose_name # 自定义方法[自定义字段或者自定义工具方法] def __str__(self): return self.title

from rest_framework import serializers from . import models class BannerModelSeiralizer(serializers.ModelSerializer): class Meta: model = models.Banner fields = ['id', 'title', 'link', 'image_url'] 

from rest_framework.generics import ListAPIView from . import models from .serializer import BannerModelSeiralizer # 这个是把所有的常量参数放在一个文件内，谁用谁拿 from lyapi.settings import contains # Create your views here. class BannerView(ListAPIView): queryset = models.Banner.objects.filter(is_show=True, is_deleted=False).order_by('orders')[0:contains.BANNER_LENGTH] serializer_class = BannerModelSeiralizer 

from django.urls import path, re_path, include from django.views.static import serve from django.conf import settings import xadmin xadmin.autodiscover() # version模块自动注册需要版本控制的 Model from xadmin.plugins import xversion xversion.register_models() urlpatterns = [ path('admin/', admin.site.urls), re_path(r'media/(?P.*)', serve, {"document_root": settings.MEDIA_ROOT}), path(r'home/', include('home.urls')), ] 

from django.urls import path, re_path from django.conf import settings from . import views urlpatterns = [ path(r'banner/', views.BannerView.as_view()), ] 

INSTALLED_APPS = [ ... 'home', 'users', 'xadmin', 'crispy_forms', 'reversion', ] # LANGUAGE_CODE = 'en-us' # 原来配置文件中的两个原配置注掉，用我们的 # TIME_ZONE = 'UTC' # 修改使用中文界面 LANGUAGE_CODE = 'zh-Hans' # 修改时区 TIME_ZONE = 'Asia/Shanghai'

from django.urls import path, re_path, include from django.views.static import serve from django.conf import settings import xadmin xadmin.autodiscover() # version模块自动注册需要版本控制的 Model from xadmin.plugins import xversion xversion.register_models() urlpatterns = [ # path('admin/', admin.site.urls), path(r'xadmin/', xadmin.site.urls), ] 

import xadmin from xadmin import views class BaseSetting(object): """xadmin的基本配置""" enable_themes = True # 开启主题切换功能 use_bootswatch = True xadmin.site.register(views.BaseAdminView, BaseSetting) class GlobalSettings(object): """xadmin的全局配置""" site_title = "莽夫学城" # 设置站点标题 site_footer = "莽夫学城有限公司" # 设置站点的页脚 menu_style = "accordion" # 设置菜单折叠 xadmin.site.register(views.CommAdminView, GlobalSettings) 

class BannerXadmin(object): # 需要展示的字段用中文显示 list_display = ['id', 'title', 'link', 'image_url', 'is_show'] # 注册Xadmin xadmin.site.register(models.Banner, BannerXadmin) 

from django.apps import AppConfig class HomeConfig(AppConfig): name = 'home' verbose_name = '我的首页' 

default_app_config = "home.apps.HomeConfig"