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@ -167,6 +167,12 @@ export function handleTree(data, id, parentId, children) {
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for (let d of data) {
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let id = d[config.id];
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childrenListMap[id] = d;
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// 检查元素是否已经有 children 字段,如果没有则添加 children 空数组字段
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// 避免后面的代码中 parentObj[config.childrenList] 出现 undefined 的情况
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// 甚至进而引发 [Vue warn]: Duplicate keys detected: '1366'. This may cause an update error. 类似的警告
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if (!d[config.childrenList]) {
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d[config.childrenList] = [];
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}
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}
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for (let d of data) {
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