How to store input in session Laravel - php

Question

I'm new in Laravel Here I am trying to post my input form in to a session but its not working I get this error without any message:
Symfony \ Component \ HttpKernel \ Exception \ MethodNotAllowedHttpException
I found nothing, here I am sharing some of my code.
My Controller:
<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Category;
use \App\Product;
class ShopController extends Controller
{
public function index()
{
$categories = Category::with('products')->get();
return view('shop.index', compact('categories'));
}
public function category($id)
{
$products = Category::find($id)->products;
return view('shop.1', compact('products'));
}
public function addToShoppingCart(Request $request)
{
$request->session()->put('cart', 'id');
$request->session()->put('cart', 'number');
$request->session()->flash('status', 'Product is toegevoegd!');
return redirect()->back();
}
}
My view:
#extends('layouts.app')
#section('content')
#if(Session::has('id', 'number'))
<div class="alert alert-success">
{{Session::get('id', 'number')}}
</div>
#endif
#foreach ($products as $product)
<ul>
<li>{{ $product->name }}</li>
<li>{{ $product->description }}</li>
<li>{{ $product->price }}</li>
<li>{{ $product->amount }}</li>
</ul>
<form method="post" action="{{url('categories\{id}')}}">
#csrf
<div class="col-md-4">
<label for="number">Aantal:</label>
<input type="number" name="number">
<label for="id">Id:</label>
<input type="text" id="id" name="id" value= {{$product->id}}>
<button type="submit" class="btn btn-success">Add product</button>
</div>
</form>
#endforeach
{{var_dump(Session::get('cart'))}}
#endsection
My routes:
Route::get('/shop', 'Shopcontroller#index')->name('shop');
Route::get('/categories/{id}', 'ShopController#category');
Route::get('/cart/{id}', 'ShopController#addToShoppingCart');
I hope someone can help me out with my problem to put the input in the session of laravel.

Answer 1

You are trying to "post" using a "get" route. You should change Route::get by Route::post

Answer 2

First of all, i suggest you use the route() method. There is nothing wrong with the url() method but i just using the route() method.
So let's solve your problem out!
1. Add names to your routes and set the ROUTE to POST instead of GET
Route::get('/shop', 'Shopcontroller#index')->name('shop');
Route::post('/categories/{id}', 'ShopController#category')->name('category');
Route::get('/cart/{id}', 'ShopController#addToShoppingCart')->name('cart.add');
2. Pass your route as an action to your form
action="{{route('category',['id' => 'your_category_id_here'])}}
3. Add use Session;
Your controller is missing the use Session; statement, add it on the top of the controller page so you can be able to use sessions.