Receiving Argument #2 should be an array in laravel - php

Question

I banged my head against the walls for 2 days now and I can't seem to shake this error.
I am receiving this error:
ErrorException (E_WARNING)
array_map(): Argument #2 should be an array
What I am trying to do: Each user can have a list of urls in the database. The same url can be in two or more user account, so it is a many to many relationship.
My UrlsController looks like this:
<?php
namespace App\Http\Controllers;
use App\User;
use App\Urls;
use Illuminate\Http\Request;
use Auth;
class UrlsController extends Controller
{
public function __construct() {
$this->middleware('auth');
}
public function index(User $user)
{
return view('editurl', compact('user'));
}
public function store(User $user) {
$user_id = Auth::user()->id;
$data = request()->validate([
'user_id' => $user_id,
'url' => 'required',
]);
auth()->user()->userurls()->create([
'user_id' => $data['user_id'],
'url' => $data['url'],
]);
return redirect("/url/" . auth()->user()->id);
}
}
My Urls model looks like this:
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Urls extends Model
{
//protected $quarded = [];
protected $fillable = ['user_id','url'];
protected $table = 'userUrls';
public function user()
{
return $this->belongsToMany(User::class);
}
}
My blade file looks like this:
#extends('layouts.pagprincipala')
#section('content')
<section id="home" class="home pt-5 pb-5">
<div class="container mb-5">
<div class="row">
<div class="col-md-8">
<h1 class="h4">Adaugare url-uri</h1>
<hr class="bg-dark w-25 ml-0">
<p>
<form action="/url/{{$user->id}}" enctype="multipart/form-data" method="post">
#csrf
<div class="row">
<div class="col-8 offset-2">
<div class="form-group row">
<label for="url" class="col-md-12 col-form-label">Adaugare URL (doar emag si pcgarage)</label>
<input id="url"
type="text"
class="form-control{{$errors->has('url') ? 'is-invalid' : ''}}"
name="url"
autocomplete="url" autofocus>
#if($errors->has('url'))
<span class="invalid-feedback" role="alert">
<strong class="text-danger">Campul url este obligatoriu.</strong>
</span>
#endif
</div>
<div class="row pt-4">
<button class="btn btn-primary">Adaugare URL</button>
</div>
</div>
</div>
</form>
</p>
</div>
</div>
</div>
</section>
#endsection
Also, my routes look like this:
Route::get('/url/{user}', 'UrlsController#index')->name('editurl');
Route::post('/url/{user}', 'UrlsController#store')->name('updateurl');
Can you give me a suggestion on how to move forward from this ?!

Answer 1

The problem is in your validator:
$data = request()->validate([
'user_id' => $user_id,
'url' => 'required',
]);
You try to validate the user_id with a rule that is the user id. What you probably want to achieve is 'user_id' => 'integer', or you can drop this rule all together as you know who the user is because of Auth()->user(). This should do:
$data = request()->validate([
'url' => 'required|url', //checks if it is an URL
]);
What we don't know is how your User model is constructed. With a many to many you need a pivot table urls_users or user_urls_users with url_id and user_id which means you don't need a user_id in the userUrls table, just id and url. But that's another issue. If you want to make sure any user has any url only once, you can use the ->sync() methode.