webman-admin多图上传预览和删除

jian1098

前言

在webmen文档和论坛中都没找到多图上传的示例,自己找了一个,整合了一下凑合用

insert页面

  1. 引入css

    <link rel="stylesheet" href="/app/admin/admin/css/muti-upload.css" />

    muti-upload.css内容如下

    .uploader-list .handle {
       position: relative;
       background-color: black;
       color: white;
       filter: alpha(Opacity=80);
       -moz-opacity: 0.6;
       opacity: 0.6;
       text-align: right;
       height: 20px;
       margin-bottom: -20px;
       display: none;
    }
    
    .uploader-list .handle i {
       display: grid;
       place-items: center;
       height: 20px;
    }
    
    .uploader-list .handle i:hover {
       cursor: pointer;
    }
    
    .uploader-list .file-iteme {
       margin: 12px 0 0 15px;
       padding: 1px;
       float: left;
    }
    
    .uploader-list .file-iteme img{
       height: 128px;
       width: 128px;
    }

    <br>

  2. 添加容器

    将需要多图上传的字段改造成下面的格式,增加预览和上传功能,如商品详情,这里字段名为details

    <div class="layui-form-item">
       <label class="layui-form-label">商品详情</label>
       <div class="layui-input-block">
           <div class="layui-upload">
               <input type="text" style="display:none" name="details" value="" id="details"/>
               <blockquote class="layui-elem-quote layui-quote-nm" style="margin-top: 10px;">
                   预览图:
                   <div class="layui-upload-list uploader-list" style="overflow: auto;" id="uploader-list">
                   </div>
               </blockquote>
    
               <button type="button" class="pear-btn pear-btn-primary pear-btn-sm" id="multi-upload">
                   <i class="layui-icon layui-icon-upload"></i>多图上传
               </button>
           </div>
       </div>
    </div>
  3. 添加js

    在html文件最后增加下面的js代码,将其中的UPLOAD_API替换为你的图片上传链接,如系统默认的/app/admin/upload/image

    //多图上传 start
    var multiple_images = []; //多图上传array,update也需要将这行放js最前面
    
    var upload = layui.upload;
    var $ = layui.$;
    upload.render({
       elem: '#multi-upload',
       url: UPLOAD_API,
       multiple: true,
       before: function(obj){
           layer.msg('图片上传中...', {
               icon: 16,
               shade: 0.01,
               time: 0
           })
       },
       done: function(res){
           layer.close(layer.msg());//关闭上传提示窗口
           //上传完毕
           $('#uploader-list').append(
               '<div class="file-iteme">' +
               '<div class="handle"><i class="layui-icon layui-icon-delete"></i></div>' +
               '<img src='+ res.data.url +' alt="'+ res.data.name +'" >' +
               '</div>'
           );
    
           //追加图片成功追加文件名至图片容器
           multiple_images.push(res.data.url);
           $('#details').val(multiple_images);
       }
    });
    
    //鼠标悬浮事件
    $(document).on("mouseenter mouseleave", ".file-iteme", function(event){
       if(event.type === "mouseenter"){
           //鼠标悬浮
           $(this).children(".info").fadeIn("fast");
           $(this).children(".handle").fadeIn("fast");
       }else if(event.type === "mouseleave") {
           //鼠标离开
           $(this).children(".info").hide();
           $(this).children(".handle").hide();
       }
    });
    
    // 删除图片
    $(document).on("click", ".file-iteme .handle", function(event){
       var delImg = $(this).parent().children("img").attr("src")
       var index = multiple_images.indexOf(delImg);
       if (index !== -1) {
           multiple_images.splice(index, 1);
       }
       //重新赋值
       $('#details').val(multiple_images);
       //删除标签
       $(this).parent().remove();
    });
    //多图上传 end

update页

​ 1-3步骤与insert页差不多相同,多了第4步js调整和第5步初始化数据

  1. 调整第3步第一行放到获取数据库记录前面

  2. 初始化数据

    给表单初始化数据时判断指定字段并遍历赋值,例如我这里的商品详情初始化:

    <script>
       // 相关接口
       const PRIMARY_KEY = "id";
       const SELECT_API = "/app/admin/mall-goods/select" + location.search;
       const UPDATE_API = "/app/admin/mall-goods/update";
       const UPLOAD_API = "/app/admin/upload/image";
    
       var multiple_images = []; //多图上传
    
       // 获取数据库记录
       layui.use(["form", "util", "popup"], function () {
           let $ = layui.$;
           $.ajax({
               url: SELECT_API,
               dataType: "json",
               success: function (res) {
    
                   // 给表单初始化数据
                   layui.each(res.data[0], function (key, value) {
                       let obj = $('*[name="'+key+'"]');
                       if (typeof obj[0] === "undefined" || !obj[0].nodeName) return;
                       if (obj[0].nodeName.toLowerCase() === "textarea") {
                           obj.val(value);
                       } else {
                           obj.attr("value", value);
                           obj[0].value = value;
                       }
    
                       // 商品详情初始化
                       if (key === "details" && value != ""){
                           multiple_images = value.split(",");
                           $.each(multiple_images, function(index, value) {
                               $('#uploader-list').append(
                                   '<div class="file-iteme">' +
                                   '<div class="handle"><i class="layui-icon layui-icon-delete"></i></div>' +
                                   '<img src='+value +' alt="'+ value +'" >' +
                                   '</div>'
                               );
                           });
                       }
    
                       //其他代码
                   });

效果图

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1个评论

kuku

感谢 用上了

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jian1098

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