how to detect if a field has input in laravel - php

Question

I was trying to create a validation in laravel controller, where if one of the fields has input, then it will validate the rest of the fields to be 'required'. But it prompts Error
Class 'Illuminate\Support\Facades\Input' not found. Please help
if(Input::has('quantity1') || has('unit1') || has('dimension1') || has('price1')){
$data = $request->validate([
'quantity1' => 'required',
'unit1' => 'required',
'dimension1' => 'required',
'price1' => 'required',
]);

Answer 1

Use required_with laravel validation rule...
$data = $request->validate([
'quantity1' => 'required_with:unit1,dimension1,price1',
'unit1' => 'required_with:quantity1,dimension1,price1',
'dimension1' => 'required_with:quantity1,unit1,price1',
'price1' => 'required_with:quantity1,unit1,dimension1',
]);

Answer 2

Input is deprecated.
I would highly suggest creating a custom request class and using that.
The benfits include:
Conforming to SOLID principles.
Easy place to manage your rules and messages.
Easy place to handle permissions should you choose.
Can be extended and reused as needed.
--
Here are the steps how to do that:
Run php artisan make:request YourCustomRequestClassNamae
Fill the new app\Http\Requests\YourCustomRequestClassNamae.php file with:
<?php
namespace App\Http\Requests;
use Illuminate\Foundation\Http\FormRequest;
class YourCustomRequestClassNamae extends FormRequest
{
/**
* Determine if the user is authorized to make this request.
*
* #return bool
*/
public function authorize()
{
return true;
}
/**
* Get the validation rules that apply to the request.
*
* #return array
*/
public function rules()
{
return [
'quantity1' => 'required',
'unit1' => 'required',
'dimension1' => 'required',
'price1' => 'required',
];
}
}
In the controller do something like:
<?php
namespace App\Http\Controllers;
...
use App\Http\Requests\YourCustomRequestClassNamae;
...
class YourControllerName extends Controller
{
...
public function yourMethodName(YourCustomRequestClassNamae $request)
{
$validatedData = $request->validated();
...
If the validation above fails it will return back with a 422 and the messages automatically ready to be pulled from the message bag.
Sources:
https://laravel.com/docs/master/validation#form-request-validation
Example in the wild:
https://github.com/jeremykenedy/larablog/blob/master/app/Http/Requests/StoreTagRequest.php
https://github.com/jeremykenedy/larablog/blob/master/app/Http/Controllers/Admin/TagController.php#L7
https://github.com/jeremykenedy/larablog/blob/master/app/Http/Controllers/Admin/TagController.php#L56