Too few arguments to function App\Awe\JsonUtility::addNewProduct(), - laravel

Question

i am trying to create a CRUD app and am having trouble, if anyone can point me in the right direction i would be grateful, thank you.
Hi there i am having difficulty using data from the json.
i have used it here and it as worked
class JsonUtility
{
public static function makeProductArray(string $file) {
$string = file_get_contents($file);
$productsJson = json_decode($string, true);
$products = [];
foreach ($productsJson as $product) {
switch($product['type']) {
case "cd":
$cdproduct = new CdProduct($product['id'],$product['title'], $product['firstname'],
$product['mainname'],$product['price'], $product['playlength']);
$products[] = $cdproduct;
break;
case "book":
$bookproduct = new BookProduct($product['id'],$product['title'], $product['firstname'],
$product['mainname'],$product['price'], $product['numpages']);
$products[]=$bookproduct;
break;
}
}
return $products;
}
this is my controller
public function index()
{
// create a list.
$products = JsonUtility::makeProductArray('products.json');
return view('products', ['products'=>$products]);
}
this is my route
Route::get('/product' , [ProductController::class, 'index'] );
how can i use this on my controller and what route should i set up to create a product
public static function addNewProduct(string $file, string $producttype, string $title, string $fname, string $sname, float $price, int $pages)
{
$string = file_get_contents($file);
$productsJson = json_decode($string, true);
$ids = [];
foreach ($productsJson as $product) {
$ids[] = $product['id'];
}
rsort($ids);
$newId = $ids[0] + 1;
$products = [];
foreach ($productsJson as $product) {
$products[] = $product;
}
$newProduct = [];
$newProduct['id'] = $newId;
$newProduct['type'] = $producttype;
$newProduct['title'] = $title;
$newProduct['firstname'] = $fname;
$newProduct['mainname'] = $sname;
$newProduct['price'] = $price;
if($producttype=='cd') $newProduct['playlength'] = $pages;
if($producttype=='book') $newProduct['numpages'] = $pages;
$products[] = $newProduct;
$json = json_encode($products);
if(file_put_contents($file, $json))
return true;
else
return false;
}
This is where i am trying to type to code into.
public function create()
{
//show a view to create a new resource
$products = JsonUtility::addNewProduct('products.json');
return view('products', ['products'=>$newProduct], );
}

Answer 1

your function addNewProduct() is expecting 7 parameters when called.
you are getting this error because you cannot provide those parameters that your function is looking for.
in your code above you are passing 'products.json' which is in a string format.
lets assume that it is a JSON data. it will still fail because you are only passing 1 parameter to a function that is expecting 7 parameters.
what you could probably do is change it to
public static function addNewProduct($data)
{
// code here
}
then you can pass your JSON data and then go through each of your json using a loop.