Laravel5.2 对后台用户ACL权限管理没有效果

<code>        $admin = Auth::guard('admin')->user();
        if($admin->can('edit-post')){
            echo 1;
        }</code>

<code>    'defaults' => [
        'guard' => 'admin',
        'passwords' => 'users',
    ],</code>

<code>        $admin = Auth::guard('admin')->user();
        if($admin->can('edit-post')){
            echo 1;
        }</code>

<code>    'defaults' => [
        'guard' => 'admin',
        'passwords' => 'users',
    ],</code>

<code>    /**
     * Compile the can statements into valid PHP.
     *
     * @param  string  $expression
     * @return string
     */
    protected function compileCan($expression)
    {
        return "<?php if (Gate::check{$expression}): ?>";
    }</code>

<code>    /**
     * Determine if the given ability should be granted for the current user.
     *
     * @param  string  $ability
     * @param  array|mixed  $arguments
     * @return bool
     */
    public function check($ability, $arguments = [])
    {
        try {
            $result = $this->raw($ability, $arguments);
        } catch (AuthorizationException $e) {
            return false;
        }

        return (bool) $result;
    }
    </code>

<code>@if(Gate::forUser(Auth::guard('admin')->user())->allows('$priv'))

@endif 

</code>