detail.vue

<template>
	<!--
	 本页面模板教程：https://ext.dcloud.net.cn/plugin?id=2717
	 uni-list 文档：https://ext.dcloud.net.cn/plugin?id=24
	 uniCloud 文档：https://uniapp.dcloud.io/uniCloud/README
	 unicloud-db 组件文档：https://uniapp.dcloud.net.cn/uniCloud/unicloud-db-component
	 DB Schema 规范：https://uniapp.dcloud.net.cn/uniCloud/schema
	 -->
	<view class="article">
		<uni-nav-bar :statusBar="true" :border="false"></uni-nav-bar>
		<unicloud-db v-slot:default="{data, loading, error, options}" :options="formData" :collection="collection"
			:field="field" :getone="true" :where="where" :manual="true" ref="detail"
			foreignKey="opendb-news-articles.author" @load="loadData">
			<template v-if="!loading && data">
				<view class="article-title">{{title}}</view>
				<uni-list :border="false">
					<uni-list-item thumbSize="lg" :thumb="data.image">
						<!-- 通过body插槽定义作者信息内容 -->
						<view slot="body" class="header-content">
							<view class="uni-title">{{data.author && data.author[0].username}}</view>
							<view class="uni-note">更新于
								<uni-dateformat :date="data.last_modify_date" format="yyyy-MM-dd"
									:threshold="[60000, 2592000000]" />
							</view>
						</view>
						<view slot="footer" class="footer">
							<button @click="followClick" class="footer-button">关注</button>
						</view>
					</uni-list-item>
				</uni-list>
				<view class="banner">
					<!-- 文章开头，缩略图 -->
					<image class="banner-img" :src="data.avatar" mode="widthFix"></image>
					<!-- 文章摘要 -->
					<view class="banner-title">
						<text class="uni-ellipsis">{{data.excerpt}}</text>
					</view>
				</view>
				<!-- 新闻详情：使用 uParse 解析富文本 -->
				<view class="article-content">
					<u-parse :content="data.content" :noData="options.noData"></u-parse>
				</view>
			</template>
		</unicloud-db>
	</view>
</template>

<script>
	import baseappConfig from '@/baseapp.config.js';
	import uniShare from 'uni_modules/uni-share/js_sdk/uni-share.js';
	import uParse from '@/components/u-parse/parse.vue';
	
	const db = uniCloud.database();
	const dbCollectionName = 'opendb-news-favorite';
	import { mapGetters } from 'vuex';
	export default {
		components: {
			uParse
		},
		data() {
			return {
				// 当前显示 _id
				id: "",
				title: '',
				// 数据表名
				collection: 'opendb-news-articles,uni-id-users',
				// 查询字段，多个字段用 , 分割
				field: 'author{username, _id},_id,avatar,excerpt,last_modify_date, comment_count, like_count,title,content',
				formData: {
					noData: '<p style="text-align:center;color:#666">详情加载中...</p>'
				},
			}
		},
		computed: {
			//拼接where条件
			//查询条件 ,更多详见 ：https://uniapp.dcloud.net.cn/uniCloud/unicloud-db?id=jsquery
			where() {
				return `_id =="${this.id}"`
			},
			...mapGetters({
				'userInfo':'user/info'
			})
		},
		onLoad(event) {
			//获取真实新闻id，通常 id 来自上一个页面
			if (event.id) {
				this.id = event.id
			}
			//若上一页传递了标题过来，则设置导航栏标题
			if (event.title) {
				this.title = event.title
				uni.setNavigationBarTitle({
					title: event.title
				})
			}
		},
		onNavigationBarButtonTap(event) {
			if (event.type == 'share') {
				this.shareClick();
			}
		},
		onReady() {
			// 开始加载数据，修改 where 条件后才开始去加载 clinetDB 的数据 ，需要等组件渲染完毕后才开始执行 loadData，所以不能再 onLoad 中执行
			if (this.id) { // ID 不为空，则发起查询
				this.$refs.detail.loadData()
			} else {
				uni.showToast({
					icon: 'none',
					title: '出错了，新闻ID为空'
				})
			}
		},
		methods: {
			setFavorite(){
				if(!this.userInfo)return
				db.collection(dbCollectionName).where({
					article_id:this.id,
					user_id:this.userInfo._id
				})
				.get()
				.then(res=>{
					let value = {
						article_id:this.id,
						article_title:this.title,
						user_id:this.userInfo._id,
						update_date:Date.now()
					}
					if(res.result.data.length == 0){
						return db.collection(dbCollectionName).add(value)
					} else {
						return db.collection(dbCollectionName).where({
							article_id:this.id,
							user_id:this.userInfo._id
						})
						.update(value)
					}
				})
				.then(res=>{
					// console.log(res);
				})
				.catch(err=>{
					console.log(err);
				})
				
				
			},
			loadData(data) {
				//如果上一页未传递标题过来（如搜索直达详情），则从新闻详情中读取标题
				if (this.title == '' && data[0].title) {
					this.title = data[0].title
					uni.setNavigationBarTitle({
						title: data[0].title
					});
					
				}
				this.setFavorite();
			},
			/**
			 * followClick
			 * 点击关注
			 */
			followClick() {
				uni.showToast({
					title: '点击关注',
					icon: 'none'
				});
			},
			/**
			 * 分享该文章
			 */
			shareClick() {
				let {
					_id,
					title,
					excerpt,
					avatar
				} = this.$refs.detail.dataList
				uniShare({
					content: { //公共的分享类型（type）、链接（herf）、标题（title）、summary（描述）、imageUrl（缩略图）
						type: 0,
						href: baseappConfig.h5.url + `/#/pages/list/detail?id=${_id}&title=${title}`,
						title: this.title,
						summary: excerpt,
						imageUrl: avatar
					},
					menus: [{
							"img": "/static/sharemenu/wechatfriend.png",
							"text": "微信好友",
							"share": {
								"provider": "weixin",
								"scene": "WXSceneSession"
							}
						},
						{
							"img": "/static/sharemenu/wechatmoments.png",
							"text": "微信朋友圈",
							"share": {
								"provider": "weixin",
								"scene": "WXSenceTimeline"
							}
						},
						{
							"img": "/static/sharemenu/mp_weixin.png",
							"text": "微信小程序",
							"share": {
								provider: "weixin",
								scene: "WXSceneSession",
								type: 5,
								miniProgram: {
									id:baseappConfig.mp.weixin.id,
									path:`/pages/list/detail?id=${_id}&title=${title}`,
									webUrl:baseappConfig.h5.url + `/#/pages/list/detail?id=${_id}&title=${title}`,
									type:0
								},
							}
						},
						{
							"img": "/static/sharemenu/weibo.png",
							"text": "微博",
							"share": {
								"provider": "sinaweibo"
							}
						},
						{
							"img": "/static/sharemenu/qq.png",
							"text": "QQ",
							"share": {
								"provider": "qq"
							}
						},
						{
							"img": "/static/sharemenu/copyurl.png",
							"text": "复制",
							"share": "copyurl"
						},
						{
							"img": "/static/sharemenu/more.png",
							"text": "更多",
							"share": "shareSystem"
						}
					],
					cancelText: "取消分享",
				}, e => { //callback
					console.log(e);
				})
			},
		}
	}
</script>

<style scoped>
	.header-content {
		flex: 1;
		display: flex;
		flex-direction: column;
		font-size: 14px;
	}

	/* 标题 */
	.uni-title {
		display: flex;
		margin-bottom: 5px;
		font-size: 14px;
		font-weight: bold;
		color: #3b4144;
	}

	/* 描述 额外文本 */
	.uni-note {
		color: #999;
		font-size: 12px;

		/* #ifndef APP-NVUE */
		display: flex;
		/* #endif */
		flex-direction: row;
		align-items: center;
	}

	.footer {
		display: flex;
		align-items: center;
	}

	.footer-button {
		display: flex;
		align-items: center;
		font-size: 12px;
		height: 30px;
		color: #fff;
		background-color: #ff5a5f;
	}

	.banner {
		position: relative;
		margin: 0 15px;
		height: 180px;
		overflow: hidden;
	}

	.banner-img {
		position: absolute;
		width: 100%;
	}

	.banner-title {
		display: flex;
		align-items: center;
		position: absolute;
		padding: 0 15px;
		width: 100%;
		bottom: 0;
		height: 30px;
		font-size: 14px;
		color: #fff;
		background: rgba(0, 0, 0, 0.4);
		overflow: hidden;
		box-sizing: border-box;
	}

	.uni-ellipsis {
		overflow: hidden;
		white-space: nowrap;
		text-overflow: ellipsis;
	}

	.article-title {
		padding: 20px 15px;
		padding-bottom: 0;
	}

	.article-content {
		padding: 15px;
		font-size: 15px;
		overflow: hidden;
	}
</style>