部门调整为树结构

src/common/util.js

@@ -308,5 +308,31 @@ export default {
   qs,
   permissions,
   copy,
-  reg
+  reg,
+  arr2tree(list, config = {}) {
+    const {key = 'id', parent = 'parentId', children = 'children'} = config
+    const result = []
+    const itemMap = {}
+    const ids = list?.map(e => `#${e[key]}#`)?.toString()
+    for (const e of list) {
+      const id = e[key], pid = e[parent]
+      itemMap[id] = {...e, [children]: [itemMap[id]?.[children]].flat().filter(Boolean)}
+      const treeItem = itemMap[id]
+      if (!!pid && ids.indexOf(`#${pid}#`) > -1) {
+        if (!itemMap[pid]) {
+          itemMap[pid] = {
+            children: []
+          }
+        }
+        itemMap[pid].children.push(treeItem)
+      } else result.push(treeItem)
+    }
+    const removeNullChildren = node => {
+      if (node[children] && node[children].length > 0) {
+        node[children].map(c => removeNullChildren(c))
+      } else delete node[children]
+    }
+    result.forEach(removeNullChildren)
+    return result
+  }
 }