(编辑:jimmy 日期: 2024/10/31 浏览:2)
树形表格表单验证预览
树形列表生成序号
首先需要生成一个序号用来确定表单验证的目标row,通过广度优先遍历,以1,1.1,1.1.1的规则对树形列表生成确定唯一值的索引,因为列表自身可以做CURD,因此需要每次列表的item增加或减少时重新调用生成索引的方法。
setIndex = (data) => { let queue = [...data]; let loop = 0; while (queue.length > 0) { loop++ [...queue].forEach((child, i) => { queue.shift() if (loop == 1) { child.customIndex = i + 1 + ""; child.currentIndex = i; } if (child.children && child.children.length > 0) { child.dataType = 1 for (let ci = 0; ci < child.children.length; ci++) { child.children[ci].currentIndex = ci child.children[ci].customIndex = child.customIndex + "." + (ci + 1) } queue.push(...child.children) } else { child.dataType = 2 } }) } } const rows = [ { id: "1", date: "2016-05-02", name: "王小虎1", address: "上海市普陀区金沙江路 1518 弄", children: [ { name: "233", customIndex: "1.1", children: [{name: "9"}] }, { name: "7771", customIndex: "1.2", children: [ { name: "9" }, { name: "9", }] } ] }, { id: "2", date: "2016-05-04", name: "王小虎2", address: "上海市普陀区金沙江路 1517 弄", children: [] }, ] setIndex(rows)
表单校验
要想实现对表格的表单验证,需要用form-item将整个表格包裹,然后在以子集的方式将每一列用form-item包裹。
<el-form ref="form" :model="form" label-width="80px" :rules="rules"> <el-form-item label-width="0" prop="rows"> <el-table> </el-table> </el-form-item> </el-form>
<el-table-column prop="name" label="姓名" sortable width="180"> <template v-slot="{$index, row}"> {{`rows${getPathByKey(row.customIndex,"customIndex",form.rows)}.name`}} <el-form-item label-width="0" :rules="rules.name" :prop="`${row.customIndex!=='tempIndex'"> <el-input v-model="row.name"></el-input> </el-form-item> </template> </el-table-column>
实现方式,表单校验本质是对于目标数据的路径查找,当el-form-item 上的prop匹配不到正确的目标是的时候就不能正常触发校验
因此,需要记录每一个row上面的属性路径,即实现记录每一行中属性(name,address)路径的方法。
getPathByKey = (value, key, arr) => { let temppath = []; let realPath = "" try { function getNodePath(node) { temppath.push(node.currentIndex); //找到符合条件的节点,通过throw终止掉递归 if (node[key] === value) { temppath.forEach((v, i) => { if (i == 0) { realPath += "." + v } else { realPath += `.children.${v}` } }) // temppath = temppath.join(",") throw ("GOT IT!"); // return; } if (node.children && node.children.length > 0) { for (var i = 0; i < node.children.length; i++) { getNodePath(node.children[i]); } //当前节点的子节点遍历完依旧没找到,则删除路径中的该节点 temppath.pop(); } else { //找到叶子节点时,删除路径当中的该叶子节点 temppath.pop(); } } for (let i = 0; i < arr.length; i++) { getNodePath(arr[i]); } } catch (e) { return realPath; } },
将每一列需要验证的item,路径查找好之后,form就可以具体监控到所有的表格输入,并触发正确的验证了,如图:
demo参考