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/**
* 转化数组数据为树形数据
* @param {Array} flatData 数据数据
* @param {Object} option 参数
* @param {String} option.childrenName 子级字段名称
* @param {String} option.idName ID字段名称
* @param {String} option.parentIdName 父级ID字段名称
*/
export function treeArray (
flatData : any [ ] ,
{ childrenName = 'children' , idName = 'id' , parentIdName = 'parentId' } = { } ,
) : any [ ] {
// 循环所有项
return flatData . filter ( ( father : any ) = > {
// 计算每一项的子级数组
const children = flatData . filter ( ( child : any ) = > {
return father [ idName ] && child [ parentIdName ] && father [ idName ] === child [ parentIdName ] ;
} ) ;
// 如果存在子级， ，
if ( children && children . length ) {
father [ childrenName ] = children ;
}
// 返回第一层
return father [ parentIdName ] === 1 ;
} ) ;
}