Vue中el-tree结合vuedraggable实现跨组件元素拖拽

木易66丶2025-01-09 10:28

实现效果：

左侧el-tree:

复制代码

<template>
    <el-tree
      class="filter-tree"
      :data="treeData"
      :props="defaultProps"
      :filter-node-method="filterNode"
      node-key="id"
      draggable
      :allow-drop="allowDrop"
      @node-drag-start="handleDragStart"
      @node-drag-end="handleDragEndz"
      ref="tree">
    </el-tree>
</template>
<script>
    data() {
        return {
            treeData:[],
            defaultProps: {
                children: 'children',
                label: 'datasetColumnName'
            },
        }
    },
    methods: {
        filterNode(value, data) {
            if (!value) return true;
            return data.datasetColumnName.indexOf(value) !== -1;
        },
        // 阻止el-tree默认拖拽
        allowDrop() {
            return false;
        },
        handleDragStart() {
            console.log(node.data)
            if(!node.data.aqlStr) return
            this.draggingItem = node.data
            this.isShowDragging = true
        },
        handleDragEndz() {
            this.isShowDragging = false
        },
    }
</script>

右侧vuedraggable接收，先npm install vuedraggable，main.js中引入：

import draggable from 'vuedraggable';

Vue.use(draggable)

使用如下：

复制代码

<draggable v-model="dragList" class="drag_list" :class="{ 'hint': isShowDragging?true:false }" animation="1000"  group="items" @dragover="handleDragOver" @drop="handleTargetDrop($event)">
    <div class="add_tip" v-if="dragList.length <= 0">
        <i class="el-icon-plus"></i>
    </div>
    <template v-else v-for="(item, index) in dragList" :key="index">
        其他代码
    </template>
</draggable>
<script>
    export default {
        data() {
            return {}
        },
        methods: {
            handleDragOver(e) {
                e.preventDefault();
            },
            handleTargetDrop(e, index) {
                e.preventDefault();
                // 阻止冒泡
                e.stopPropagation();
                // 将el-tree选中的数据放入dragList中
                this.dragList.push(this.draggingItem)
                // 刷新页面
                this.$forceUpdate()
            }
        }
    
    }
</script>

文章参考：

https://blog.csdn.net/Turn_to_empty/article/details/126759544