实现对话框添加多行内容

            <el-form-item style="width: 100%" label="属性" prop="属性">
              <div class="item" v-for="(item, i) in form.属性" :key="i">
                <el-row
                  :gutter="20"
                  style="
                    display: flex;
                    align-items: center;
                    justify-content: space-between;
                    margin-bottom: 10px;
                  "
                >
                  <el-col :span="10">
                      <el-select
                    placeholder="请选择本体"
                    style="width: 100%"
                    v-model="form.属性.attr_name[i]"
                  >
                    <el-option
                      v-for="item in ontoList"
                      :key="item.onto_name"
                      :value="item.onto_name"
                      :label="item.onto_name"
                    ></el-option>
                  </el-select>
                  </el-col>
                  <el-col :span="12">
                    <el-input
                      type="text"
                      style="width: 100%"
                      v-model="form.属性.attr_value[i]"
                      placeholder="请输入属性"
                    ></el-input>
                  </el-col>
                  <el-col
                    :span="2"
                    style="
                      display: flex;
                      align-items: center;
                      justify-content: space-between;
                    "
                  >
                    <el-button
                      @click="ctrlAttrribute('add', i)"
                      type="text"
                      icon="el-icon-circle-plus-outline"
                      style="color: #02a38e"
                    ></el-button>
                    <el-button
                      @click="ctrlAttrribute('del', i)"
                      v-if="i"
                      type="text"
                      icon="el-icon-circle-close"
                      style="color: red"
                    ></el-button>
                  </el-col>
                </el-row>