更新

2026-07-22 10:18:59 +08:00
parent 2530ddada6
commit 0fb03d0bca
618 changed files with 19445 additions and 3 deletions
@@ -0,0 +1,172 @@
+<?php
+
+
+
+namespace app\service;
+
+
+
+use app\model\Department;
+
+use app\model\User;
+
+
+
+class DepartmentService
+
+{
+
+    /**
+
+     * 获取部门及其所有下级部门 ID（含自身）。
+
+     *
+
+     * @return int[]
+
+     */
+
+    public static function descendantIds(int $departmentId): array
+
+    {
+
+        $all = Department::field('id,parent_id')->select()->toArray();
+
+        $childrenMap = [];
+
+        foreach ($all as $row) {
+
+            $parentId = (int) ($row['parent_id'] ?? 0);
+
+            $childrenMap[$parentId][] = (int) $row['id'];
+
+        }
+
+
+
+        $result = [];
+
+        $stack = [$departmentId];
+
+        while ($stack) {
+
+            $current = array_pop($stack);
+
+            if (in_array($current, $result, true)) {
+
+                continue;
+
+            }
+
+            $result[] = $current;
+
+            foreach ($childrenMap[$current] ?? [] as $childId) {
+
+                $stack[] = $childId;
+
+            }
+
+        }
+
+
+
+        return $result;
+
+    }
+
+
+
+    /**
+
+     * 构建带层级缩进的部门树（扁平列表，供下拉选择）。
+
+     */
+
+    public static function treeOptions(): array
+
+    {
+
+        $rows = Department::order('sort_order')->order('id')->select()->toArray();
+
+        $childrenMap = [];
+
+        foreach ($rows as $row) {
+
+            $parentId = (int) ($row['parent_id'] ?? 0);
+
+            $childrenMap[$parentId][] = $row;
+
+        }
+
+
+
+        $options = [];
+
+        self::walkTree($childrenMap, 0, 0, $options);
+
+
+
+        return $options;
+
+    }
+
+
+
+    private static function walkTree(array $childrenMap, int $parentId, int $depth, array &$options): void
+
+    {
+
+        foreach ($childrenMap[$parentId] ?? [] as $row) {
+
+            $prefix = $depth > 0 ? str_repeat('　', $depth) . '└ ' : '';
+
+            $options[] = [
+
+                'id'        => (int) $row['id'],
+
+                'name'      => $row['name'],
+
+                'parent_id' => $row['parent_id'] ? (int) $row['parent_id'] : null,
+
+                'label'     => $prefix . $row['name'],
+
+                'depth'     => $depth,
+
+            ];
+
+            self::walkTree($childrenMap, (int) $row['id'], $depth + 1, $options);
+
+        }
+
+    }
+
+
+
+    /**
+
+     * 获取某部门及下级部门内的所有用户 ID。
+
+     *
+
+     * @return int[]
+
+     */
+
+    public static function userIdsInDepartments(array $departmentIds): array
+
+    {
+
+        if (empty($departmentIds)) {
+
+            return [];
+
+        }
+
+
+
+        return User::whereIn('department_id', $departmentIds)->column('id');
+
+    }
+
+}
+