laravel 5.4 在请求验证之前修改数据

laravel 5.4 modify data before validation in request

提问by Thomas Venturini

I have my custom Request, which extends the Backpack CrudController.

我有我的自定义请求，它扩展了 Backpack CrudController。

Now I would like to override the prepareForValidation of the ValidatesWhenResolvedTrait since it looks like the right place to modify my incoming data, but I can't figure out how ...

现在我想覆盖 ValidatesWhenResolvedTrait 的 prepareForValidation ，因为它看起来是修改传入数据的正确位置，但我不知道如何......

So my first question is, can I override this method? Its protected ...

所以我的第一个问题是，我可以覆盖这个方法吗？其保护...

protected function prepareForValidation()

And my second question, how can I modify my input on the Request or FormRreuqest objects?

我的第二个问题是，如何修改我对 Request 或 FormRreuqest 对象的输入？

Here is my RequestClass

这是我的 RequestClass

<?php

namespace App\Http\Requests;

use App\Http\Requests\Request;
use Config;

class DonationsRequest extends \Backpack\CRUD\app\Http\Requests\CrudRequest
{


    /**
     * Determine if the user is authorized to make this request.
     *
     * @return bool
     */
    public function authorize()
    {
        // only allow updates if the user is logged in
        return \Auth::check();
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array
     */
    public function rules()
    {
        return [
            'name' => 'required|max:255',
            'email' => 'required|email',
            'dob' => 'required|date',
            'newsletter' => 'required|boolean',
            'country' => 'sometimes|required|in:'.implode(',', Config::get('validation.countries')),
            'street' => 'sometimes|required|string|max:255',
            'zip' => 'sometimes|required|string|between:4,5',
            'city' => 'sometimes|required|string|between:4,255',
            'amount' => 'required|numeric|between:1,'.Config::get('donations.max'),
            'type' => 'required|in:oo,monthly',
            'provider' => 'sometimes|string|nullable',
            'product_id' => 'sometimes|exists:products,id|nullable',
            'campaign_id' => 'required|exists:campaigns,id',
            'status' => 'sometimes|required|in:pending,canceled,success,error',
            'profile' => 'sometimes|string|regex:/^profile[0-9]+$/|nullable',
        ];
    }

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

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

    private function prepareForValidation()
    {

        dd('getValidatorInstance custom');

        $this->sanitizeInput();

        return parent::getValidatorInstance();
    }

    private function sanitizeInput()
    {

        dd('sanitizeInput custom');

        $data = $this->all();

        dd($data);

        // overwrite the newsletter field value to match boolean validation
        $data['newsletter'] = ($data['newsletter'] == 'true' || $data['newsletter'] == '1' || $data['newsletter'] == true) ? true : false;

        return $data;
    }

    private function validate() {
        dd('validate');
    }
}

As you can see, I first tried to override the getValidatorInstance method, since this looked like the common aproach to this, but it is not executed (so not overridden - protected?).

正如您所看到的，我首先尝试覆盖 getValidatorInstance 方法，因为这看起来像是对此的常见方法，但它没有被执行（所以没有被覆盖 - 受保护？）。

采纳答案by Thomas Venturini

Ok I found out where the error was. I did split the Frontend Request and the Backend Request Call. Since I was working on the Backend Request the Frontend Request was not overwriting anything ... so it was my bad, no bug there, sry for the waste of time, but a big thanks to the community!

好的，我找到了错误所在。我确实拆分了前端请求和后端请求调用。因为我正在处理后端请求，所以前端请求没有覆盖任何东西......所以这是我的坏事，没有错误，抱歉浪费时间，但非常感谢社区！

回答by ARIF MAHMUD RANA

Although I didn't tried but it seems it should work you can override validationDatafrom Illuminate\Foundation\Http\FormRequestclass like.

虽然我没有尝试过，但它似乎应该可以工作，您可以validationData从Illuminate\Foundation\Http\FormRequest类中覆盖。

/**
 * Get data to be validated from the request.
 *
 * @return array
 */
protected function validationData()
{
    $all = parent::validationData();
    //e.g you have a field which may be json string or array
    if (is_string($playerIDs = array_get($all, 'player_id')))
        $playerIDs = json_decode($playerIDs, true);

    $all['player_id'] = $playerIDs
    return $all;
}

or you can override allmethod in Illuminate\Http\Concerns\InteractsWithInputtrait

或者你可以覆盖特征中的all方法Illuminate\Http\Concerns\InteractsWithInput

/**
 * Get all of the input and files for the request.
 *
 * @return array
 */
public function all()
{
    $all = parent::all();
    //then do your operation
    if (is_string($playerIDs = array_get($all, 'player_id')))
        $playerIDs = json_decode($playerIDs, true);

    $all['player_id'] = $playerIDs
    return $all;
}

回答by Tim Jai

Could you modify the request?

你能修改请求吗？

$request->merge(['field' => 'new value']);

回答by RajG

Well I am sure,this can help in modifying The input, it worked for me.[laravel 5.4]

嗯，我确定，这可以帮助修改输入，它对我有用。[laravel 5.4]

place this

把这个

$input['url'] = $url;
$this->replace($input);
dd($input);

in listFormRequest. (use $allinstead of $input, if you follow above used answer).

在 listFormRequest 中。（如果您遵循上述使用的答案，请使用$all代替$input）。

This only changes input,which is available even in controller. You still need to find a way to insert it into DB, or do something else to use modified input for using it in blade.

这只会改变输入，即使在控制器中也可以使用。您仍然需要找到一种方法将它插入到数据库中，或者做一些其他的事情来使用修改后的输入在刀片中使用它。