修改提交的时候后端需要字符串 回显

             /** 提交按钮 */
                submitForm: function() {
                  this.$refs["form"].validate(valid => {
                    if (valid) {
                      // 把数组转为字符串以逗号分隔
                      if (this.form.userIds && this.form.userIds.length > 0) {
                        this.form.userIds = this.form.userIds.join(",");
                      }
                      if (this.form.id != undefined) {
                        updateGroup(this.form).then(response => {
                          if (response.code === 200) {
                            this.msgSuccess("修改成功");
                            this.open = false;
                            this.getList();
                          }
                        });
                      } else {
                        addGroup(this.form).then(response => {
                          if (response.code === 200) {
                            this.msgSuccess("新增成功");
                            this.open = false;
                            this.getList();
                          }
                        });
                      }
                    }
                  });
                },
                
                给返回值新增字段
                 response.rows.forEach(r => {
                  r.streetid = '';
                  r.AEE = '';
                });
                
                 /** 修改按钮操作 */
                handleUpdate(row) {
                  this.reset();
                  console.log('row',row);
                  this.form = { ...row };
                  // 所属区属回显
                  this.form.companyaddress = [
                    row.groupExt1Id,
                    row.groupExt2Id,
                    row.groupExt3Id,
                    row.groupAreaId
                  ];
                  // 群组人员回显
                  if (this.form.userIds) {
                      this.$set(
                        this.form,
                        "userIds",
                                this.form.userIds.split(",").map(item => (item =      parseInt(item)))
                      );
                    }
                  this.open = true;
                  this.title = "修改群组";
                },
                

下拉框多选的时候 会造出样式布局问题 添加样式

              <el-form-item label="群组人员">
                          <el-select
                            v-model="form.userIds"
                            multiple
                            placeholder="请选择群组人员"
                            clearable
                          >
                            <el-option
                              v-for="item in users"
                              :key="item.userId"
                              :label="item.nickName"
                              :value="parseInt(item.userId)"
                            >
                            </el-option>
                          </el-select>

                    ::v-deep .el-select__tags {
                      max-height: 56px;
                      max-width: none !important;
                      width: 100%;
                      overflow-y: auto;
                      overflow-x: hidden;
                    }
                    
                 接口数据去重
                **getDevice() {
                      listDeviceNew({ ...this.queryParams, queryParam: 1 }).then(res => {
                        var tempData = res.data.totalList.rows;
                        var hash = {};
                        // 去重
                        tempData = tempData.reduce(function(item, index) {
                          hash[index.devicename]
                            ? ""
                            : (hash[index.devicename] = true && item.push(index));
                          return item;
                        }, []);
                        //  把后端返回的空值过滤
                        this.deviceList = tempData.filter(r => {
                          return r.devicename;
                        });
                      });
                    },**