diff --git a/catch/permissions/model/HasPermissionsTrait.php b/catch/permissions/model/HasPermissionsTrait.php
index 006cf1e..64b95ce 100644
--- a/catch/permissions/model/HasPermissionsTrait.php
+++ b/catch/permissions/model/HasPermissionsTrait.php
@@ -8,3 +8,69 @@
  * @copyright By CatchAdmin
  * @license  https://github.com/yanwenwu/catch-admin/blob/master/LICENSE.txt
  */
+namespace catchAdmin\permissions\model;
+
+trait HasPermissionsTrait
+{
+  /**
+   *
+   * @time 2019年12月09日
+   * @return \think\model\relation\BelongsToMany
+   */
+  public function permissions(): \think\model\relation\BelongsToMany
+  {
+    return $this->belongsToMany(Permissions::class, 'role_has_permissions', 'permission_id', 'role_id');
+  }
+
+  /**
+   *
+   * @time 2019年12月08日
+   * @param array $condition
+   * @param array $field
+   * @return mixed
+   */
+  public function getPermissions($condition = [], $field = [])
+  {
+    return $this->permissions()
+      ->when(!empty($field), function ($query) use ($field){
+        $query->field($field);
+      })
+      ->when(!empty($condition), function ($query) use ($condition){
+        $query->where($condition);
+      })
+      ->select();
+  }
+
+  /**
+   *
+   * @time 2019年12月08日
+   * @param array $permissions
+   * @return mixed
+   * @throws \think\db\exception\DbException
+   */
+  public function attach(array $permissions)
+  {
+    if (empty($permissions)) {
+      return true;
+    }
+
+    sort($permissions);
+
+    return $this->permissions()->attach($permissions);
+  }
+
+  /**
+   *
+   * @time 2019年12月08日
+   * @param array $roles
+   * @return mixed
+   */
+  public function detach(array $roles = [])
+  {
+    if (empty($roles)) {
+      return $this->permissions()->detach();
+    }
+
+    return $this->permissions()->detach($roles);
+  }
+}