验证后处理重定向

有时你可能需要登录以确定用户在提交表单后重定向到的位置。表单请求提供了多种方式。

默认情况下，在请求 $redirect，$redirectRoute 和 $redirectAction 中声明了 3 个变量。

除了这三个变量之外，你还可以覆盖主重定向处理程序 getRedirectUrl()。

下面给出了一个示例请求，说明你可以执行的操作。

<?php namespace App;

use Illuminate\Foundation\Http\FormRequest as Request;

class SampleRequest extends Request {

    // Redirect to the given url
    public $redirect;

    // Redirect to a given route
    public $redirectRoute;

    // Redirect to a given action
    public $redirectAction;

    /**
     * Get the URL to redirect to on a validation error.
     *
     * @return string
     */
    protected function getRedirectUrl()
    {

        // If no path is given for `url()` it will return a new instance of `Illuminate\Routing\UrlGenerator`

        // If your form is down the page for example you can redirect to a hash
        return url()->previous() . '#contact';

        //`url()` provides several methods you can chain such as

        // Get the current URL
        return url()->current();

        // Get the full URL of the current request
        return url()->full();

        // Go back
        return url()->previous();

        // Or just redirect back
        return redirect()->back();
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array
     */
    public function rules()
    {
        return [];
    }

    /**
     * Determine if the user is authorized to make this request.
     *
     * @return bool
     */
    public function authorize()
    {
        return true;
    }
}