补充
1.celery自身不提供消息队列和结果存储，我们使用redis
1.跟redis没有必然联系
2.django的缓存，跟celery也没有关系
3.django缓存如果使用redis，默认放在0号库
4.celery的消息队列 放在1 号库
5.celery的结果存储放在2号库
双写一致性之定时更新
1.一旦加入缓存，就会出现数据不一致的请求
2.解决双写一致性问题
1.改数据，删缓存
2.改数据，改缓存
3.定时更新
3.首页轮播图存在双写一致性问题这个问题
1.以现在的技术水平（信号），做不到:改数据删缓存
2.能选择的就是定时更新
轮播图接口--->实时性要求没有那么高
celery的定时任务——定时更新轮播图
Home_task
@app.task
def update_banner():
# 查询数据库，拿到所有轮播图，序列化后，放到缓存中
banner_list = Banner.objects.all().filter(is_delete=False, is_show=True).order_by('orders')[:settings.BANNER_COUNT]
ser = BannerSerializer(instance=banner_list, many=True)
# 如果在视图类中，做序列化 ，因为视图类中有request对象，所以像图片这种，会自动加前面地址，
# 在这里没有request对象，需要手动拼
for item in ser.data:
item['image'] = settings.BACKEND_URL + item['image']
cache.set('home_banner_list', ser.data)
return True
celery.py
from celery import Celery
# 一、加载django配置环境
import os
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'luffy_api.settings.dev')
# 如果没有此时没有加载django配置环境，在terminal中启动cerely的时候，会报错，ps： from home.models import Banner ，ModuleNotFoundError: No module named 'home'
broker = 'redis://127.0.0.1:6379/1' # 消息中间件 redis
backend = 'redis://127.0.0.1:6379/2' # 结果存储 redis
app = Celery(__name__,broker=broker,backend=backend,include=["celery_task.course_task",'celery_task.home_task','celery_task.user_task'])
# 3 定时任务 1 每隔5s干一次 2 每天的几点几分几秒干一次
# 时区
app.conf.timezone='Asia/Shanghai'
# 是否使用UTC
app.conf.enable_utc = False
# 任务的定时配置
from datetime import timedelta
from celery.schedules import crontab
app.conf.beat_schedule = {
'update_banner': {
'task': 'celery_task.home_task.update_banner',
'schedule': timedelta(seconds=5), # 每个五秒
'args': (),
},
}
异步发送短信
视图函数
from celery_task.user_task import send_sms
class UserView(GenericViewSet,CreateModelMixin):
serializer_class = MulLoginSerializer
@action(methods=['GET'], detail=False)
def check_mobile(self, request, *args, **kwargs):
...
@action(methods=['POST'], detail=False)
def mul_login(self, request, *args, **kwargs):
...
@action(methods=['GET'], detail=False)
def send_sms(self,request, *args, **kwargs):
# 前端需要把要发送的手机号传入 在地址栏中
mobile = request.query_params.get('mobile',None)
# print(mobile)
code =get_code() # 把code存起来，放到缓存中
print(code)
cache.set('send_sms_code_%s'%mobile,code)
# 从缓存中取
# cache.get('send_sms_code_%s'%mobile)
if mobile:
# # 1.开启线程
# t=Thread(target=send_sms_by_mobile,args=(mobile,code))
# t.start()
# # send_sms_by_mobile(mobile,code)
# return APIResponse(msg='短信已经发送了')
# 2.异步发送短信
res = send_sms.delay(mobile,code)
return APIResponse(celery_id = str(res),msg='短信已经发送了')
raise APIException('没有手机号')
celery_task/user_task
from .celery import app
import time
from libs.send_tx_sms import send_sms_by_mobile
@app.task
def send_sms(mobile,code):
res =send_sms_by_mobile(mobile,code)
if res:
return True
return False
异步秒杀逻辑前后端
后端
视图类
from celery_task.celery import app
# celery的包下
from celery.result import AsyncResult
class SckillView(APIView):
def post(self,request,*args,**kwargs):
name = request.data.get('name')
if name:
# 提交任务
res = sckill_goods.delay(name)
return APIResponse(celery_id = str(res),msg='正在抢哦')
raise APIException('没有传东西哦')
def get(self,request,*args,**kwargs):
id =request.GET.get('celery_id')
if id:
a = AsyncResult(id=id, app=app)
if a.successful(): # 正常执行完成
result = a.get() # 任务返回的结果
if result:
return APIResponse(msg='抢到咯')
else:
return APIResponse(code=111,msg='不好意思，没有抢到')
elif a.status == 'PENDING':
print('任务等待中被执行')
return APIResponse(code=110,msg='正在排队中')
elif a.failed():
print('任务失败')
return APIResponse(code=111,msg='任务失败')
raise APIException('你没有传celery_id哦')
User_task
from .celery import app
import random
@app.task
def sckill_goods(name):
# 逻辑是：开启事务---》扣减库存---》生成订单
import time
time.sleep(6)
res = random.choice([100,111])
if res == 100 :
# 抢到了
print('%s被抢到了'%name)
return True
else:
# 秒杀失败了
print('%s抢失败了' % name)
return False
路由
from django.urls import path
from .views import UserView,RedisTest,SetPassword,SckillView
from rest_framework.routers import SimpleRouter
from rest_framework_jwt.views import obtain_jwt_token
router = SimpleRouter()
router.register('userinfo',UserView,'userinfo')
router.register('setpassword',SetPassword,'setpassword')
urlpatterns = [
# path('test/',RedisTest.as_view())
path('skill/',SckillView.as_view())
]
urlpatterns +=router.urls
前端
<template>
<div>
<h2>秒杀功能</h2>
<el-button type="danger" round @click="go_sckill">开始秒杀</el-button>
</div>
</template>
<script>
import el from "element-ui/src/locale/lang/el";
export default {
name: "Sckill.vue",
data(){
return {
loading: false,
t:null,
celery_id:'',
}
},
methods: {
go_sckill() {
this.$axios.post(`${this.$settings.BASE_URL}user/skill/`, {
name: 'go语言',
}).then(res => {
if (res.data.code == 100) {
//任务已经提交，返回了celery的任务id
// console.log(res.data)
this.celery_id=res.data.celery_id
this.loading=true
//开启定时器，每隔一秒去查询一次秒杀结果
this.t = setInterval(()=>{
this.$axios.get(`${this.$settings.BASE_URL}user/skill/?celery_id=${this.celery_id}`).then(res=>{
if (res.data.code==100){
//秒杀成功，关掉定时器，并提示秒杀成功
clearInterval(this.t)
this.t=null
this.$message({
message: res.data.msg,
type: 'success'
});
}else if (res.data.code == 110) {
//继续秒杀，正在秒杀中
console.log(res.data.msg)
}else{
//秒杀失败
clearInterval(this.t)
this.t=null
this.$message({
message: res.data.msg,
type: 'warning'
});
}
})
},1000)
}else {
//任务失败
this.$message({
message: res.data.msg,
type: 'warning'
});
}
})
}
}
}
</script>
<style scoped>
</style>
课程页面前端
1.新建三个组件
LightCourse.vue
FreeCourse.vue
ActualCourse.vue
2.配置路由
import FreeCourse from "@/views/FreeCourse";
import ActualCourse from "@/views/ActualCourse";
import LightCourse from "@/views/LightCourse";
{
path: '/free-course',
name: 'free-course',
component: FreeCourse
},
{
path: '/actual-course',
name: 'actual-course',
component: ActualCourse
},
{
path: '/light-course',
name: 'light-course',
component: LightCourse
}
3.复制页面-->FreeCourse.vue
FreeCourse.vue
<template>
<div class="course">
<Header></Header>
<div class="main">
<!-- 筛选条件 -->
<div class="condition">
<ul class="cate-list">
<li class="title">课程分类:</li>
<li class="this">全部</li>
<li>Python</li>
<li>Linux运维</li>
<li>Python进阶</li>
<li>开发工具</li>
<li>Go语言</li>
<li>机器学习</li>
<li>技术生涯</li>
</ul>
<div class="ordering">
<ul>
<li class="title">筛 选:</li>
<li class="default this">默认</li>
<li class="hot">人气</li>
<li class="price">价格</li>
</ul>
<p class="condition-result">共21个课程</p>
</div>
</div>
<!-- 课程列表 -->
<div class="course-list">
<div class="course-item">
<div class="course-image">
<img src="@/assets/img/course-cover.jpeg" alt="">
</div>
<div class="course-info">
<h3>Python开发21天入门 <span><img src="@/assets/img/avatar1.svg" alt="">100人已加入学习</span></h3>
<p class="teather-info">Alex 金角大王 老男孩Python教学总监 <span>共154课时/更新完成</span></p>
<ul class="lesson-list">
<li><span class="lesson-title">01 | 第1节：初识编码</span> <span class="free">免费</span></li>
<li><span class="lesson-title">01 | 第1节：初识编码初识编码</span> <span class="free">免费</span></li>
<li><span class="lesson-title">01 | 第1节：初识编码</span></li>
<li><span class="lesson-title">01 | 第1节：初识编码初识编码</span></li>
</ul>
<div class="pay-box">
<span class="discount-type">限时免费</span>
<span class="discount-price">￥6.00元</span>
<span class="original-price">原价：9.00元</span>
<span class="buy-now">立即购买</span>
</div>
</div>
</div>
<div class="course-item">
<div class="course-image">
<img src="@/assets/img/course-cover.jpeg" alt="">
</div>
<div class="course-info">
<h3>Python开发21天入门 <span><img src="@/assets/img/avatar1.svg" alt="">100人已加入学习</span></h3>
<p class="teather-info">Alex 金角大王 老男孩Python教学总监 <span>共154课时/更新完成</span></p>
<ul class="lesson-list">
<li><span class="lesson-title">01 | 第1节：初识编码</span> <span class="free">免费</span></li>
<li><span class="lesson-title">01 | 第1节：初识编码初识编码</span> <span class="free">免费</span></li>
<li><span class="lesson-title">01 | 第1节：初识编码</span></li>
<li><span class="lesson-title">01 | 第1节：初识编码初识编码</span></li>
</ul>
<div class="pay-box">
<span class="discount-type">限时免费</span>
<span class="discount-price">￥0.00元</span>
<span class="original-price">原价：9.00元</span>
<span class="buy-now">立即购买</span>
</div>
</div>
</div>
<div class="course-item">
<div class="course-image">
<img src="@/assets/img/course-cover.jpeg" alt="">
</div>
<div class="course-info">
<h3>Python开发21天入门 <span><img src="@/assets/img/avatar1.svg" alt="">100人已加入学习</span></h3>
<p class="teather-info">Alex 金角大王 老男孩Python教学总监 <span>共154课时/更新完成</span></p>
<ul class="lesson-list">
<li><span class="lesson-title">01 | 第1节：初识编码</span> <span class="free">免费</span></li>
<li><span class="lesson-title">01 | 第1节：初识编码初识编码</span> <span class="free">免费</span></li>
<li><span class="lesson-title">01 | 第1节：初识编码</span></li>
<li><span class="lesson-title">01 | 第1节：初识编码初识编码</span></li>
</ul>
<div class="pay-box">
<span class="discount-type">限时免费</span>
<span class="discount-price">￥0.00元</span>
<span class="original-price">原价：9.00元</span>
<span class="buy-now">立即购买</span>
</div>
</div>
</div>
<div class="course-item">
<div class="course-image">
<img src="@/assets/img/course-cover.jpeg" alt="">
</div>
<div class="course-info">
<h3>Python开发21天入门 <span><img src="@/assets/img/avatar1.svg" alt="">100人已加入学习</span></h3>
<p class="teather-info">Alex 金角大王 老男孩Python教学总监 <span>共154课时/更新完成</span></p>
<ul class="lesson-list">
<li><span class="lesson-title">01 | 第1节：初识编码</span> <span class="free">免费</span></li>
<li><span class="lesson-title">01 | 第1节：初识编码初识编码</span> <span class="free">免费</span></li>
<li><span class="lesson-title">01 | 第1节：初识编码</span></li>
<li><span class="lesson-title">01 | 第1节：初识编码初识编码</span></li>
</ul>
<div class="pay-box">
<span class="discount-type">限时免费</span>
<span class="discount-price">￥0.00元</span>
<span class="original-price">原价：9.00元</span>
<span class="buy-now">立即购买</span>
</div>
</div>
</div>
</div>
</div>
<Footer></Footer>
</div>
</template>
<script>
import Header from "@/components/Header"
import Footer from "@/components/Footer"
export default {
name: "Course",
data() {
return {
category: 0,
}
},
components: {
Header,
Footer,
}
}
</script>
<style scoped>
.course {
background: #f6f6f6;
}
.course .main {
width: 1100px;
margin: 35px auto 0;
}
.course .condition {
margin-bottom: 35px;
padding: 25px 30px 25px 20px;
background: #fff;
border-radius: 4px;
box-shadow: 0 2px 4px 0 #f0f0f0;
}
.course .cate-list {
border-bottom: 1px solid #333;
border-bottom-color: rgba(51, 51, 51, .05);
padding-bottom: 18px;
margin-bottom: 17px;
}
.course .cate-list::after {
content: "";
display: block;
clear: both;
}
.course .cate-list li {
float: left;
font-size: 16px;
padding: 6px 15px;
line-height: 16px;
margin-left: 14px;
position: relative;
transition: all .3s ease;
cursor: pointer;
color: #4a4a4a;
border: 1px solid transparent; /* transparent 透明 */
}
.course .cate-list .title {
color: #888;
margin-left: 0;
letter-spacing: .36px;
padding: 0;
line-height: 28px;
}
.course .cate-list .this {
color: #ffc210;
border: 1px solid #ffc210 !important;
border-radius: 30px;
}
.course .ordering::after {
content: "";
display: block;
clear: both;
}
.course .ordering ul {
float: left;
}
.course .ordering ul::after {
content: "";
display: block;
clear: both;
}
.course .ordering .condition-result {
float: right;
font-size: 14px;
color: #9b9b9b;
line-height: 28px;
}
.course .ordering ul li {
float: left;
padding: 6px 15px;
line-height: 16px;
margin-left: 14px;
position: relative;
transition: all .3s ease;
cursor: pointer;
color: #4a4a4a;
}
.course .ordering .title {
font-size: 16px;
color: #888;
letter-spacing: .36px;
margin-left: 0;
padding: 0;
line-height: 28px;
}
.course .ordering .this {
color: #ffc210;
}
.course .ordering .price {
position: relative;
}
.course .ordering .price::before,
.course .ordering .price::after {
cursor: pointer;
content: "";
display: block;
width: 0px;
height: 0px;
border: 5px solid transparent;
position: absolute;
right: 0;
}
.course .ordering .price::before {
border-bottom: 5px solid #aaa;
margin-bottom: 2px;
top: 2px;
}
.course .ordering .price::after {
border-top: 5px solid #aaa;
bottom: 2px;
}
.course .course-item:hover {
box-shadow: 4px 6px 16px rgba(0, 0, 0, .5);
}
.course .course-item {
width: 1100px;
background: #fff;
padding: 20px 30px 20px 20px;
margin-bottom: 35px;
border-radius: 2px;
cursor: pointer;
box-shadow: 2px 3px 16px rgba(0, 0, 0, .1);
/* css3.0 过渡动画 hover 事件操作 */
transition: all .2s ease;
}
.course .course-item::after {
content: "";
display: block;
clear: both;
}
/* 顶级元素 父级元素 当前元素{} */
.course .course-item .course-image {
float: left;
width: 423px;
height: 210px;
margin-right: 30px;
}
.course .course-item .course-image img {
width: 100%;
}
.course .course-item .course-info {
float: left;
width: 596px;
}
.course-item .course-info h3 {
font-size: 26px;
color: #333;
font-weight: normal;
margin-bottom: 8px;
}
.course-item .course-info h3 span {
font-size: 14px;
color: #9b9b9b;
float: right;
margin-top: 14px;
}
.course-item .course-info h3 span img {
width: 11px;
height: auto;
margin-right: 7px;
}
.course-item .course-info .teather-info {
font-size: 14px;
color: #9b9b9b;
margin-bottom: 14px;
padding-bottom: 14px;
border-bottom: 1px solid #333;
border-bottom-color: rgba(51, 51, 51, .05);
}
.course-item .course-info .teather-info span {
float: right;
}
.course-item .lesson-list::after {
content: "";
display: block;
clear: both;
}
.course-item .lesson-list li {
float: left;
width: 44%;
font-size: 14px;
color: #666;
padding-left: 22px;
/* background: url("路径") 是否平铺 x轴位置 y轴位置 */
background: url("/src/assets/img/play-icon-gray.svg") no-repeat left 4px;
margin-bottom: 15px;
}
.course-item .lesson-list li .lesson-title {
/* 以下3句，文本内容过多，会自动隐藏，并显示省略符号 */
text-overflow: ellipsis;
overflow: hidden;
white-space: nowrap;
display: inline-block;
max-width: 200px;
}
.course-item .lesson-list li:hover {
background-image: url("/src/assets/img/play-icon-yellow.svg");
color: #ffc210;
}
.course-item .lesson-list li .free {
width: 34px;
height: 20px;
color: #fd7b4d;
vertical-align: super;
margin-left: 10px;
border: 1px solid #fd7b4d;
border-radius: 2px;
text-align: center;
font-size: 13px;
white-space: nowrap;
}
.course-item .lesson-list li:hover .free {
color: #ffc210;
border-color: #ffc210;
}
.course-item .pay-box::after {
content: "";
display: block;
clear: both;
}
.course-item .pay-box .discount-type {
padding: 6px 10px;
font-size: 16px;
color: #fff;
text-align: center;
margin-right: 8px;
background: #fa6240;
border: 1px solid #fa6240;
border-radius: 10px 0 10px 0;
float: left;
}
.course-item .pay-box .discount-price {
font-size: 24px;
color: #fa6240;
float: left;
}
.course-item .pay-box .original-price {
text-decoration: line-through;
font-size: 14px;
color: #9b9b9b;
margin-left: 10px;
float: left;
margin-top: 10px;
}
.course-item .pay-box .buy-now {
width: 120px;
height: 38px;
background: transparent;
color: #fa6240;
font-size: 16px;
border: 1px solid #fd7b4d;
border-radius: 3px;
transition: all .2s ease-in-out;
float: right;
text-align: center;
line-height: 38px;
}
.course-item .pay-box .buy-now:hover {
color: #fff;
background: #ffc210;
border: 1px solid #ffc210;
}
</style>
课程相关表分析
1.表分析
1.课程分类表：id，分类名，继承BaseModel
跟课程表是一对多，一个分类下有很多课程
2.课程表（实战课课表）
1.如果一个表：
不同课程直接，字段可能不一样
2.多个课程，多个表
只写实战课这条线
3.章节表：
跟课程是一对多
4.课时表
跟章节是一对多
5.老师表
跟课程一对多
2.表的关联关系--->公司中外键都是逻辑外键，不建物理外键
1.靠一个东西建立出来的三种关系---->外键
-一对一
-一对多
-多对多
2.图书 作者 多对多
图书表
id name price
1 xx 33
2 yy 32
作者
id name addr
1 多对 上海
2 大师傅 北京
中间表
id book_id auth_id
1 1 1
2 1 2
3 2 1
补充
1.在django中创建表中的字段：
course = models.ForeignKey("Course", related_name='coursechapters', on_delete=models.CASCADE,verbose_name="课程名称")
其中的参数：related_name='coursechapters'
2.字段related_name参数：
1.基于对象的跨表查询：
正：字段
反： 1.表名小写（一对一是 表名小写，一对多 表名小写_set.all()）
2.-related_name='coursechapters' 基于对象跨表查反向查询，替换表名小写
2.基于双下划线的连表查询：
正：字段
反： 1.表名小写
2.related_query_name='xxx' 基于连表查反向查询，替换表名小写
课程表数据录入
1.建course应用 -->注册
cd luffy_api/apps
python ../../manage.py startapp course
2.创建表
3.添加表数据---sql执行
创建表
from django.db import models
from utils.common_models import BaseModel
# 课程分类
class CourseCategory(BaseModel):
"""分类 id name """
name = models.CharField(max_length=64, unique=True, verbose_name="分类名称")
class Meta:
db_table = "luffy_course_category"
verbose_name = "课程分类"
verbose_name_plural = verbose_name
def __str__(self):
return "%s" % self.name
# 课程表
class Course(BaseModel):
"""课程"""
course_type = (
(0, '付费'),
(1, 'VIP专享'),
)
level_choices = (
(0, '初级'),
(1, '中级'),
(2, '高级'),
)
status_choices = (
(0, '上线'),
(1, '下线'),
(2, '预上线'),
)
name = models.CharField(max_length=128, verbose_name="课程名称")
course_img = models.ImageField(upload_to="courses", max_length=255, verbose_name="封面图片", blank=True, null=True)
course_type = models.SmallIntegerField(choices=course_type, default=0, verbose_name="付费类型")
brief = models.TextField(max_length=2048, verbose_name="详情介绍", null=True, blank=True)
level = models.SmallIntegerField(choices=level_choices, default=0, verbose_name="难度等级")
pub_date = models.DateField(verbose_name="发布日期", auto_now_add=True)
period = models.IntegerField(verbose_name="建议学习周期(day)", default=7)
attachment_path = models.FileField(upload_to="attachment", max_length=128, verbose_name="课件路径", blank=True,
null=True)
status = models.SmallIntegerField(choices=status_choices, default=0, verbose_name="课程状态")
students = models.IntegerField(verbose_name="学习人数", default=0) # 优化字段
sections = models.IntegerField(verbose_name="总课时数量", default=0)
pub_sections = models.IntegerField(verbose_name="课时更新数量", default=0)
price = models.DecimalField(max_digits=6, decimal_places=2, verbose_name="课程原价", default=0)
teacher = models.ForeignKey("Teacher", on_delete=models.DO_NOTHING, null=True, blank=True, verbose_name="授课老师")
course_category = models.ForeignKey("CourseCategory", on_delete=models.SET_NULL, db_constraint=False, null=True,
blank=True, verbose_name="课程分类")
class Meta:
db_table = "luffy_course"
verbose_name = "课程"
verbose_name_plural = "课程"
def __str__(self):
return "%s" % self.name
# 章节
class CourseChapter(BaseModel):
"""章节"""
'''
基于对象的跨表查询：正：字段 反：表名小写（一对一是 表名小写，一对多 表名小写_set.all()）
-related_name='coursechapters' 基于对象跨表查反向查询，替换表名小写
基于双下划线的连表查询：正：字段 反：表名小写
-related_query_name='xxx' 基于连表查反向查询，替换表名小写
'''
# related_name='coursechapters'
course = models.ForeignKey("Course", related_name='coursechapters', on_delete=models.CASCADE,
verbose_name="课程名称")
chapter = models.SmallIntegerField(verbose_name="第几章", default=1)
name = models.CharField(max_length=128, verbose_name="章节标题")
summary = models.TextField(verbose_name="章节介绍", blank=True, null=True)
pub_date = models.DateField(verbose_name="发布日期", auto_now_add=True)
class Meta:
db_table = "luffy_course_chapter"
verbose_name = "章节"
verbose_name_plural = verbose_name
def __str__(self):
return "%s:(第%s章)%s" % (self.course, self.chapter, self.name)
# 课时
class CourseSection(BaseModel):
"""课时"""
section_type_choices = (
(0, '文档'),
(1, '练习'),
(2, '视频')
)
chapter = models.ForeignKey("CourseChapter", related_name='coursesections', on_delete=models.CASCADE,
verbose_name="课程章节")
name = models.CharField(max_length=128, verbose_name="课时标题")
section_type = models.SmallIntegerField(default=2, choices=section_type_choices, verbose_name="课时种类")
section_link = models.CharField(max_length=255, blank=True, null=True, verbose_name="课时链接",
help_text="若是video，填vid,若是文档，填link")
duration = models.CharField(verbose_name="视频时长", blank=True, null=True, max_length=32) # 仅在前端展示使用
pub_date = models.DateTimeField(verbose_name="发布时间", auto_now_add=True)
free_trail = models.BooleanField(verbose_name="是否可试看", default=False)
class Meta:
db_table = "luffy_course_section"
verbose_name = "课时"
verbose_name_plural = verbose_name
def __str__(self):
return "%s-%s" % (self.chapter, self.name)
# 老师表
class Teacher(BaseModel):
"""导师"""
role_choices = (
(0, '讲师'),
(1, '导师'),
(2, '班主任'),
)
name = models.CharField(max_length=32, verbose_name="导师名")
role = models.SmallIntegerField(choices=role_choices, default=0, verbose_name="导师身份")
title = models.CharField(max_length=64, verbose_name="职位、职称")
signature = models.CharField(max_length=255, verbose_name="导师签名", help_text="导师签名", blank=True, null=True)
image = models.ImageField(upload_to="teacher", null=True, verbose_name="导师封面")
brief = models.TextField(max_length=1024, verbose_name="导师描述")
class Meta:
db_table = "luffy_teacher"
verbose_name = "导师"
verbose_name_plural = verbose_name
def __str__(self):
return "%s" % self.name
课程数据录入
INSERT INTO luffy_teacher(id, orders, is_show, is_delete, created_time, updated_time, name, role, title, signature, image, brief) VALUES (1, 1, 1, 0, '2022-07-14 13:44:19.661327', '2022-07-14 13:46:54.246271', 'Alex', 1, '老男孩Python教学总监', '金角大王', 'teacher/alex_icon.png', '老男孩教育CTO & CO-FOUNDER 国内知名PYTHON语言推广者 51CTO学院2016\2017年度最受学员喜爱10大讲师之一 多款开源软件作者 曾任职公安部、飞信、中金公司、NOKIA中国研究院、华尔街英语、ADVENT、汽车之家等公司');
INSERT INTO luffy_teacher(id, orders, is_show, is_delete, created_time, updated_time, name, role, title, signature, image, brief) VALUES (2, 2, 1, 0, '2022-07-14 13:45:25.092902', '2022-07-14 13:45:25.092936', 'Mjj', 0, '前美团前端项目组架构师', NULL, 'teacher/mjj_icon.png', '是马JJ老师, 一个集美貌与才华于一身的男人，搞过几年IOS，又转了前端开发几年，曾就职于美团网任高级前端开发，后来因为不同意王兴(美团老板)的战略布局而出家做老师去了，有丰富的教学经验，开起车来也毫不含糊。一直专注在前端的前沿技术领域。同时，爱好抽烟、喝酒、烫头(锡纸烫)。 我的最爱是前端，因为前端妹子多。');
INSERT INTO luffy_teacher(id, orders, is_show, is_delete, created_time, updated_time, name, role, title, signature, image, brief) VALUES (3, 3, 1, 0, '2022-07-14 13:46:21.997846', '2022-07-14 13:46:21.997880', 'Lyy', 0, '老男孩Linux学科带头人', NULL, 'teacher/lyy_icon.png', 'Linux运维技术专家，老男孩Linux金牌讲师，讲课风趣幽默、深入浅出、声音洪亮到爆炸');
-- 分类表
INSERT INTO luffy_course_category(id, orders, is_show, is_delete, created_time, updated_time, name) VALUES (1, 1, 1, 0, '2022-07-14 13:40:58.690413', '2022-07-14 13:40:58.690477', 'Python');
INSERT INTO luffy_course_category(id, orders, is_show, is_delete, created_time, updated_time, name) VALUES (2, 2, 1, 0, '2022-07-14 13:41:08.249735', '2022-07-14 13:41:08.249817', 'Linux');
-- 课程表
INSERT INTO luffy_course(id, orders, is_show, is_delete, created_time, updated_time, name, course_img, course_type, brief, level, pub_date, period, attachment_path, status, students, sections, pub_sections, price, course_category_id, teacher_id) VALUES (1, 1, 1, 0, '2022-07-14 13:54:33.095201', '2022-07-14 13:54:33.095238', 'Python开发21天入门', 'courses/alex_python.png', 0, 'Python从入门到入土&&&Python从入门到入土&&&Python从入门到入土&&&Python从入门到入土&&&Python从入门到入土&&&Python从入门到入土&&&Python从入门到入土&&&Python从入门到入土&&&Python从入门到入土&&&Python从入门到入土&&&Python从入门到入土&&&Python从入门到入土', 0, '2022-07-14', 21, '', 0, 231, 120, 120, 0.00, 1, 1);
INSERT INTO luffy_course(id, orders, is_show, is_delete, created_time, updated_time, name, course_img, course_type, brief, level, pub_date, period, attachment_path, status, students, sections, pub_sections, price, course_category_id, teacher_id) VALUES (2, 2, 1, 0, '2022-07-14 13:56:05.051103', '2022-07-14 13:56:05.051142', 'Python项目实战', 'courses/mjj_python.png', 0, '', 1, '2022-07-14', 30, '', 0, 340, 120, 120, 99.00, 1, 2);
INSERT INTO luffy_course(id, orders, is_show, is_delete, created_time, updated_time, name, course_img, course_type, brief, level, pub_date, period, attachment_path, status, students, sections, pub_sections, price, course_category_id, teacher_id) VALUES (3, 3, 1, 0, '2022-07-14 13:57:21.190053', '2022-07-14 13:57:21.190095', 'Linux系统基础5周入门精讲', 'courses/lyy_linux.png', 0, '', 0, '2022-07-14', 25, '', 0, 219, 100, 100, 39.00, 2, 3);
-- 章节表
INSERT INTO luffy_course_chapter(id, orders, is_show, is_delete, created_time, updated_time, chapter, name, summary, pub_date, course_id) VALUES (1, 1, 1, 0, '2022-07-14 13:58:34.867005', '2022-07-14 14:00:58.276541', 1, '计算机原理', '', '2022-07-14', 1);
INSERT INTO luffy_course_chapter(id, orders, is_show, is_delete, created_time, updated_time, chapter, name, summary, pub_date, course_id) VALUES (2, 2, 1, 0, '2022-07-14 13:58:48.051543', '2022-07-14 14:01:22.024206', 2, '环境搭建', '', '2022-07-14', 1);
INSERT INTO luffy_course_chapter(id, orders, is_show, is_delete, created_time, updated_time, chapter, name, summary, pub_date, course_id) VALUES (3, 3, 1, 0, '2022-07-14 13:59:09.878183', '2022-07-14 14:01:40.048608', 1, '项目创建', '', '2022-07-14', 2);
INSERT INTO luffy_course_chapter(id, orders, is_show, is_delete, created_time, updated_time, chapter, name, summary, pub_date, course_id) VALUES (4, 4, 1, 0, '2022-07-14 13:59:37.448626', '2022-07-14 14:01:58.709652', 1, 'Linux环境创建', '', '2022-07-14', 3);
-- 课时表
INSERT INTO luffy_course_Section(id, is_show, is_delete, created_time, updated_time, name, orders, section_type, section_link, duration, pub_date, free_trail, chapter_id) VALUES (1, 1, 0, '2022-07-14 14:02:33.779098', '2022-07-14 14:02:33.779135', '计算机原理上', 1, 2, NULL, NULL, '2022-07-14 14:02:33.779193', 1, 1);
INSERT INTO luffy_course_Section(id, is_show, is_delete, created_time, updated_time, name, orders, section_type, section_link, duration, pub_date, free_trail, chapter_id) VALUES (2, 1, 0, '2022-07-14 14:02:56.657134', '2022-07-14 14:02:56.657173', '计算机原理下', 2, 2, NULL, NULL, '2022-07-14 14:02:56.657227', 1, 1);
INSERT INTO luffy_course_Section(id, is_show, is_delete, created_time, updated_time, name, orders, section_type, section_link, duration, pub_date, free_trail, chapter_id) VALUES (3, 1, 0, '2022-07-14 14:03:20.493324', '2022-07-14 14:03:52.329394', '环境搭建上', 1, 2, NULL, NULL, '2022-07-14 14:03:20.493420', 0, 2);
INSERT INTO luffy_course_Section(id, is_show, is_delete, created_time, updated_time, name, orders, section_type, section_link, duration, pub_date, free_trail, chapter_id) VALUES (4, 1, 0, '2022-07-14 14:03:36.472742', '2022-07-14 14:03:36.472779', '环境搭建下', 2, 2, NULL, NULL, '2022-07-14 14:03:36.472831', 0, 2);
INSERT INTO luffy_course_Section(id, is_show, is_delete, created_time, updated_time, name, orders, section_type, section_link, duration, pub_date, free_trail, chapter_id) VALUES (5, 1, 0, '2022-07-14 14:04:19.338153', '2022-07-14 14:04:19.338192', 'web项目的创建', 1, 2, NULL, NULL, '2022-07-14 14:04:19.338252', 1, 3);
INSERT INTO luffy_course_Section(id, is_show, is_delete, created_time, updated_time, name, orders, section_type, section_link, duration, pub_date, free_trail, chapter_id) VALUES (6, 1, 0, '2022-07-14 14:04:52.895855', '2022-07-14 14:04:52.895890', 'Linux的环境搭建', 1, 2, NULL, NULL, '2022-07-14 14:04:52.895942', 1, 4);
上传课程图片
把 media文件夹下的图片放到对应位置
课程主页接口
1.课程分类接口
1.查询所有课程接口
1.带过滤
2.带排序
3.带分页
视图类
from rest_framework.viewsets import GenericViewSet
from utils.common_mixin import CommonListModelMixin as ListModelMixin
from .models import CourseCategory
from .serializer import CourseCategorySerializer
class CourseCategoryView(GenericViewSet,ListModelMixin):
queryset = CourseCategory.objects.filter(is_delete=False,is_show=True).order_by('orders').all()
serializer_class = CourseCategorySerializer
序列化类
from rest_framework import serializers
from .models import CourseCategory
class CourseCategorySerializer(serializers.ModelSerializer):
class Meta:
model=CourseCategory
fields=['name','id']
子路由
from rest_framework.routers import SimpleRouter
from .views import CourseCategoryView
router = SimpleRouter()
router.register('category',CourseCategoryView,'category')
urlpatterns = [
]
urlpatterns += router.urls
作业
1.验证码登录
1.写个接口，访问，返回二维码，开启一个定时器，不停向后端发送请求
2.去redis中查，如果有token--->直接带回来，显示登录成功，token保存到本地
掏出手机，扫描二维码，携带id=1，到后端，给id为1的用户签发token，放到reids中
