更新

app/common.php

@@ -1,2 +1,36 @@
 <?php
-// 应用公共文件
+// +----------------------------------------------------------------------
+// | SentCMS [ WE CAN DO IT JUST THINK IT ]
+// +----------------------------------------------------------------------
+// | Copyright (c) 2013 http://www.tensent.cn All rights reserved.
+// +----------------------------------------------------------------------
+// | Author: molong <molong@tensent.cn> <http://www.tensent.cn>
+// +----------------------------------------------------------------------
+use think\facade\Cache;
+
+function getDepartmentChild($pid = 0){
+	$department = Cache::get('department');
+	if(!$department){
+		$department = \app\model\auth\Departments::where('status', '=', 1)->column('id,parent_id,title', 'id');
+		Cache::set('department', $department);
+	}
+	$res = getChilds($department, $pid, 'id', 'parent_id');
+	$res[] = (int) $pid;   //把自己包含在内
+	return $res;
+}
+
+/**
+ * 获得所有的子
+ * @param  [type] $id [description]
+ * @return [type]     [description]
+ */
+function getChilds($data, $id = 0, $pk = 'id', $pid = 'parent_id') {
+	$array = [];
+	foreach ($data as $k => $v) {
+		if ($v[$pid] == $id) {
+			$array[] = (int) $v[$pk];
+			array_merge($array, getChilds($data, $v[$pk]));
+		}
+	}
+	return $array;
+}