el-collapse勾选框初始赋值checked为true后取消不掉_el-checkbox初始化

从列表【编辑】按钮进入能获取到选择的数据集与选择的算法等信息。





一开始以为是折叠面板刷新问题，勾选框消除不掉，只有折叠之后再打开，勾选框才会消除掉。
后来发现是初始化问题。修改后的代码如下。

							<el-table
                                :data="trainDataTable"
                                ref="trainCheck"
                                :span-method="objectSpanMethod"
                                @selection-change="trainChoseSplit"
                                :row-key="(row) => row.id"
                                border
                                height="550"
                                >
                                <el-table-column
                                    prop="sourceName"
                                    label="数据集">
                                </el-table-column>
                                <el-table-column
                                    prop="groupName"
                                    label="分组">
                                </el-table-column>
                                <el-table-column
                                    prop="splitName"
                                    label="分片">
                                </el-table-column>
                                <el-table-column
                                    prop="weight"
                                    label="比重">
                                </el-table-column>
                                <el-table-column
                                    prop="description"
                                    label="描述">
                                </el-table-column>
                                <el-table-column
                                    prop="createTime"
                                    label="创建时间">
                                </el-table-column>
                                <el-table-column
                                    label="选择"
                                    width='90px' 
                                    align="center"  
                                    type="selection" 
                                    :reserve-selection="true">
                                    <!-- <template slot-scope="scope">
                                    <el-checkbox :value="trainData[scope.$index].checked" @change="trainChoseSplit(scope.row)" ></el-checkbox>
                                    </template> -->
                                </el-table-column>
                                </el-table>
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defaultChecked(trainData) {
      var that = this;
      that.$nextTick(() => {
        console.log(this.$refs.trainCheck);
        that.trainDataTable.forEach(row => {
          if (row.id === trainData) {
            console.log('row');
            that.trainMultipleSelection.push(row)
            that.$refs.trainCheck.toggleRowSelection(row, true);
          }
        });
      });
    },
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