el-table el-column selection disable
几个要点：
1.通过 selectable 绑定
2.绑定的方法只能返回0/1
<el-table-column
type="selection"
width="55"
:selectable="checkbox_select">
</el-table-column>
checkbox_select(row, index){
if (this.$MyComm.isEmpty(row.bug_id)){
return 0
}else {
return 1
}
参考文档：https://blog.csdn.net/rickiyeat/article/details/76595263
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