作业-发布课程完善步骤导航

# 独立完成后端代码逻辑的编写

要求完成接口：

（1）根据课程id获取课程发布基本信息

（2）根据课程id发布课程

# 一、前端代码

# 1、定义api

分析这个页面一共有两个远程方法：一个是根基课程id获取课程基本预览信息，第二个是发布课程

getCoursePublishInfoById(id) {
  return request({
    url: `${api_name}/course-publish-info/${id}`,
    method: 'get'
  })
},

publishCourse(id) {
  return request({
    url: `${api_name}/publish-course/${id}`,
    method: 'put'
  })
}

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# 2、定义数据模型

data() {
    return {
        saveBtnDisabled: false, // 保存按钮是否禁用
        courseId: '', // 所属课程
        coursePublish: {}
    }
},

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# 3、完善步骤导航

edu/course/chapter.js

previous() {
  console.log('previous')
  this.$router.push({ path: '/edu/course/info/' + this.courseId })
},

next() {
  console.log('next')
  this.$router.push({ path: '/edu/course/publish/' + this.courseId })
}

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edu/course/pubish.js

<div>
    <el-button @click="previous">返回修改</el-button>
    <el-button :disabled="saveBtnDisabled" type="primary" @click="publish">发布课程</el-button>
</div>
previous() {
  console.log('previous')
  this.$router.push({ path: '/edu/course/chapter/' + this.courseId  })
},

publish() {
  console.log('publish')
  course.publishCourse(this.courseId).then(response => {
    this.$router.push({ path: '/edu/course/list' })
  })
}

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# 4、组件方法定义

import

import course from '@/api/edu/course'

created

created() {
    console.log('chapter created')
    this.init()
},

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获取数据的方法

init() {
  if (this.$route.params && this.$route.params.id) {
    this.courseId = this.$route.params.id
    // 根据id获取课程基本信息
    this.fetchCoursePublishInfoById()
  }
},

fetchCoursePublishInfoById() {
  course.getCoursePublishInfoById(this.courseId).then(response => {
    this.coursePublish = response.data.item
  })
},

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# 5、组件模板

<template>

  <div class="app-container">

    <h2 style="text-align: center;">发布新课程</h2>

    <el-steps :active="3" process-status="wait" align-center style="margin-bottom: 40px;">
      <el-step title="填写课程基本信息"/>
      <el-step title="创建课程大纲"/>
      <el-step title="发布课程"/>
    </el-steps>

    <div class="ccInfo">
      <img :src="coursePublish.cover">
      <div class="main">
        <h2>{{ coursePublish.title }}</h2>
        <p class="gray"><span>共{{ coursePublish.lessonNum }}课时</span></p>
        <p><span>所属分类：{{ coursePublish.subjectLevelOne }} — {{ coursePublish.subjectLevelTwo }}</span></p>
        <p>课程讲师：{{ coursePublish.teacherName }}</p>
        <h3 class="red">￥{{ coursePublish.price }}</h3>
      </div>
    </div>

    <div>
      <el-button @click="previous">返回修改</el-button>
      <el-button :disabled="saveBtnDisabled" type="primary" @click="publish">发布课程</el-button>
    </div>
  </div>
</template>

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# 6、css样式

<style scoped>
.ccInfo {
    background: #f5f5f5;
    padding: 20px;
    overflow: hidden;
    border: 1px dashed #DDD;
    margin-bottom: 40px;
    position: relative;
}
.ccInfo img {
    background: #d6d6d6;
    width: 500px;
    height: 278px;
    display: block;
    float: left;
    border: none;
}
.ccInfo .main {
    margin-left: 520px;
}

.ccInfo .main h2 {
    font-size: 28px;
    margin-bottom: 30px;
    line-height: 1;
    font-weight: normal;
}
.ccInfo .main p {
    margin-bottom: 10px;
    word-wrap: break-word;
    line-height: 24px;
    max-height: 48px;
    overflow: hidden;
}

.ccInfo .main p {
    margin-bottom: 10px;
    word-wrap: break-word;
    line-height: 24px;
    max-height: 48px;
    overflow: hidden;
}
.ccInfo .main h3 {
    left: 540px;
    bottom: 20px;
    line-height: 1;
    font-size: 28px;
    color: #d32f24;
    font-weight: normal;
    position: absolute;
}
</style>

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# 二、后端实现

# 1、定义vo

package com.guli.edu.vo;

@ApiModel(value = "课程发布信息")
@Data
public class CoursePublishVo  implements Serializable {

    private static final long serialVersionUID = 1L;

    private String title;
    private String cover;
    private Integer lessonNum;
    private String subjectLevelOne;
    private String subjectLevelTwo;
    private String teacherName;
    private String price;//只用于显示
}

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# 2、其余部分独立完成

编辑

上次更新: 2024/06/15, 15:12:25

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