el-cascader级联选择

页面级联选择

参考elementPlus官网 Cascader 级联选择器

我变量绑定的是字符串，因为后台保存需要用字符串，所以需要数组转字符串用逗号拼接

## 代码
<el-cascader :options="statusList" v-model="ruleForm.statusArr"v-if="item.property == 'status'" placeholder="请选择状态" style="width: 100%;"clearable>
</el-cascader>
<script>
export default {
  name: 'deviceInfo',
  setup() {
   const state = reactive({
      "statusList": [
    {
      "value": "0",
      "label": "可用",
      "children": [
        {
          "value": "01",
          "label": "开机中"
        },
        {
          "value": "02",
          "label": "关机中"
        },
        {
          "value": "03",
          "label": "其它"
        }
      ]
    },
    {
      "value": "1",
      "label": "不可用",
      "children": [
        {
          "value": "11",
          "label": "设备停用"
        },
        {
          "value": "12",
          "label": "其它"
        }
      ]
    },
    {
      "value": "2",
      "label": "占用",
      "children": [
        {
          "value": "21",
          "label": "计划维护保养"
        },
        {
          "value": "22",
          "label": "非计划故障送修"
        },
        {
          "value": "23",
          "label": "调试"
        },
        {
          "value": "24",
          "label": "其它"
        }
      ]
    },
    {
      "value": "3",
      "label": "异常",
      "children": [
        {
          "value": "31",
          "label": "物料异常"
        },
        {
          "value": "32",
          "label": "质量异常"
        },
        {
          "value": "33",
          "label": "设备异常"
        },
        {
          "value": "34",
          "label": "人员异常"
        },
        {
          "value": "35",
          "label": "HSE异常"
        },
        {
          "value": "36",
          "label": "其它"
        }
      ]
    }
  ]
   }）
 }

const ruleForm = reactive({
statusArr: []
}）

保存的时候 statusArr转字符串
status: ruleForm.statusArr.join(','),

//查询、table渲染
function handleChange(value) {
      if (value) {
        state.statusArr = value
        state.query.status = value.join(',')
      } else {
        state.query.status = []
      }
    }

    const statusFormat = (status) => {
      if (!Array.isArray(status) || status.length === 0) {
        return '';
      }

      const labels = status.map((value) => {
        const node = findNode(state.statusList, value);
        return node ? node.label : '';
      });

      return labels.join(' - ');
    };

 

    const findNode = (list, value) => {
      for (const item of list) {
        if (item.value === value) {
          return item;
        }
        if (item.children && item.children.length > 0) {
          const found = findNode(item.children, value);
          if (found) {
            return found;
          }
        }
      }
      return null;
    };


}


<script>

数据库存储形式

效果