Use of undefined constant contacts - assumed 'contacts' error - php

Question

Recently I have been working to insert data into a database with laravel. Everything went fine. But know I am stuck with the error: "Use of undefined constant contacts - assumed 'contacts'". I do not know how to fix this.
I have already on the Laracast website to see if I could find an explanation on how to solve this, but I couldn't since the answers were not the once I was looking for. I have also looked in StackOverflow. But there were (again) no answers that could help me fix this the problem. I also have asked a classmate of mine but he also couldn't fix it.
My controller:
<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\contacts;
class ContactsController extends Controller
{
/*Haal alle data op uit de contact tabel return een view file*/
public function index($contact = contacts){
$Contact = contacts::all();
return view('contact',compact('contacts'));
}
/*Return een view file*/
public function create(){
return view('contacts');
}
public function storeContact(){
/*Maakt nieuwe variabele, wanneer er op de knop wordt geklikt worden er 2 waardes opgehaald.*/
$contacts = new contacts();
$contacts->name = request('voornaam');
$contacts->description = request('bericht');
$contacts->save();
return redirect('/contacts');
}
}
My view:
#extends ('Layout')
#section('title')
Contact
#endsection
#section('content')
<br>
<h2>Contact</h2>
<p>Voor verdere informatie (die u niet op onze website kunt vinden) kunt u ons bereiken op onze email of telefoonnummer:</p>
<p>Email: Cronensteynfake#gmail.com</p>
<p>telefoonnummer: 06-11122234</p>
<br>
U kunt ook ons contactformulier invullen.
<br><br>
<h2>Cronenstyn Contactformulier</h2>
<form action="" method="post">
#csrf
<div class="form-group">
<label for="exampleInputPassword1">Voornaam</label>
<input type="text" class="form-control" id="Vnaam" placeholder="Voornaam">
</div>
<div class="form-group">
<label for="exampleInputPassword1">Achternaam</label>
<input type="text" class="form-control" id="Anaam" placeholder="Achternaam">
</div>
<div class="form-group">
<label for="exampleInputEmail1">Email</label>
<input type="email" class="form-control" id="Email" aria-describedby="emailHelp" placeholder="Uw email">
<small id="emailHelp" class="form-text text-muted">Wij delen uw email met niemand</small>
</div>
<label for="exampleInputEmail1">Bericht</label>
<div class="form-group shadow-textarea">
<textarea class="form-control z-depth-1" id="bericht" rows="3" placeholder="Uw bericht"></textarea>
</div>
<button onclick="Message()" type="submit" class="btn btn-primary">Verzenden</button>
<script>
function Message() {
alert("Uw bericht is met succes verstuurd.");
}
</script>
</form>
#endsection
My route:
<?php
Route::get('/', function () {
return view('welcome');
});
Route::GET('/home',('CronensteynController#home'));
Route::GET('/nieuws',('CronensteynController#nieuws'));
Route::GET('/galerij',('CronensteynController#gallerij'));
Route::GET('/activiteit',('CronensteynController#activiteit'));
Route::GET('/contact',('CronensteynController#contact'));
Route::GET('/about',('CronensteynController#about'));
Route::get('/beheer', 'PageController#beheer');
Route::get('/create_beheer', 'PageController#Create_beheer');
Route::get('/update_beheer', 'PageController#Update_beheer');
Route::get('/delete_beheer', 'PageController#delete_beheer');
Route::post('/create_beheer', 'CreateBeheerController#store');
Route::post('/contact', 'contactsController#index');
Hopefully I have given you enough info and code about the problem.
Greetings,
Parsa_237

Answer 1

Follow a convention to avoid errors regarding cases.
Generally models start with a capital letter.
Always make your model name singular. For model Contact laravel will look the table contacts.
For more information on naming convention you can follow this link
Here you are passing $contact to index method you don't have to do that.
public function index(){
$Contacts = contacts::all();
return view('contact',compact('Contacts'));
}