Laravel can't pass value to controller after submitting to database - php

Question

After submitting to the database and redirecting/reloading the page I get the error Trying to get property 'stockcount1' of non-object. I know it has to do with the product id not being properly passed back but I'm having trouble finding a fix.
show.blade.php
{!! Form::open(['action' => ['App\Http\Controllers\PagesController#addreview', $data['product']->id], 'method' => 'POST']) !!}
{{-- {{ Form::hidden('_method', 'PUT') }} --}}
<div class="form-group">
{{ Form::textarea('description', '', ['class' => 'form-control', 'placeholder' => 'Write your message']) }}
</div>
<div class="form-group">
{{ Form::label('rating', 'Rating') }}
{{ Form::select('rating', ['1' => '1', '2' => '2', '3' => '3', '4' => '4', '5' => '5'], '1') }}
</div>
{{ Form::submit('Submit', ['class' => 'btn btn-primary']) }}
{!! Form::close() !!}
web.php
Route::get('/addreview/{id}', 'App\Http\Controllers\ProductsController#show');
Route::post('/addreview/{id}', 'App\Http\Controllers\PagesController#addreview');
Route::get('/products/{id}', 'App\Http\Controllers\ProductsController#show');
pagescontroller.php
public function addreview(Request $request, $id)
{
$this->validate($request, [
'description' => 'required',
'rating' => 'nullable',
]);
$review = new Review;
$review->rating = $request->input('rating');
$review->reviewerid = auth()->user()->id;
$review->productid = $id;
$review->description = $request->input('description');
$review->save();
$product = Product::find($id);
$reviews = DB::table('reviews')->where('productid', '=', $id)->paginate(10);
$sum = $product->stockcount1 + $product->stockcount2 + $product->stockcount3;
$data = array();
$data['product'] = $product;
$data['stocktotal'] = $sum;
$data['reviews'] = $reviews;
$data['id'] = $id;
return redirect('/products/{$id}')->with('success', 'Review submitted')->with(compact('data'));
//return view('products.show')->with('success', 'Review submitted')->with(compact("data"));
}
productscontroller.php
$product = Product::find($id);
Log::info(print_r($id, true));
$reviews = DB::table('reviews')->where('productid', '=', $id)->paginate(10);
$sum = $product->stockcount1 + $product->stockcount2 + $product->stockcount3;
$data = array();
$data['product'] = $product;
$data['stocktotal'] = $sum;
$data['reviews'] = $reviews;
$data['id'] = $id;
return view('products.show')->with(compact('data'));

Answer 1

Had to change redirect('/products/{$id}') to redirect('/products/'.$id).
Thanks to #user3532758