laravel validatetor in controller seems not working

Question

The validate() function from my sales controller seems not working, I am comparing it to my other controller, it looks like it should work but it is not. it looks like the validate() is being bypassed. here's my controller

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Session;

class SalesController extends Controller
{
    public function store(Request $request)
    {
        $this->validate($request, [
            'user_id' => 'required',
            'status_id' => 'required',
            'currency_id' => 'required',
            'company_id' => 'required',
            'invoice_no' => 'nullable',
            'notes' => 'nullable',
            'admin_notes' => 'nullable',
            'due_date' => 'nullable',
            'publish' => 'nullable',
            'product_id' => 'required|min:1',
            'product_code' => 'required|min:1',
            'product_name' => 'required|min:1',
            'quantity' => 'required'
        ]);


         $sales = $request->only(
            'user_id',
            'status_id',
            'currency_id',
            'currency_rate',
            'due_date',
            'company_id',
            'invoice_no',
            'notes',
            'admin_notes',
            'delivery_date',
            'publish'
        );
        $sales['grandtotal'] = (float) str_replace(',', '', $request->grandtotal);
        $sales['grandtotalcost'] = (float) str_replace(',', '', $request->grandtotalcost);
        $sales = Sales::create($sales);

        $input = $request->all();
        for($i=0; $i<= count($input['quantity']); $i++) {
        if(empty($input['quantity'][$i]) || !is_numeric($input['quantity'][$i])) continue;
            $items = [ 
                'sales_id' => $sales->id,
                'product_id' => $input['product_id'][$i],
                'product_code' => $input['product_code'][$i],
                'product_name' => $input['product_name'][$i],
                'price' => $input['price'][$i],
                'cost' => $input['cost'][$i],
                'quantity' => intval($input['quantity'][$i]),
                'total_price' => (float) str_replace(',', '', $input['total_price'][$i]),
                'total_cost' => (float) str_replace(',', '', $input['total_cost'][$i]),
            ];

            Salesitems::create($items);
        }

        // $ponumbers = Ponumbers::create($request->only('purchase_no'));
        $invnum = $request->all();
        $invnumbers = new Invnumbers;
        $invnumbers->sales_num = $invnum['invoice_no'];
        $invnumbers->save();

        if ($request){
            Session::flash('message','Invoice was successfully added');
            Session::flash('m-class','alert-success');
        } else {
            Session::flash('message','Data is not saved');
            Session::flash('m-class','alert-danger');
            return redirect()->route('sales.index');
        }
        return redirect()->route('sales.index');
    }
}

My Blade

<input class="form-control autocomplete_txt product_name" type='text' data-type="product_name" id='product_name_1' name='product_name[]' for="1" readonly/>
@if ($errors->has('product_name')) <p class="help-block">{{ $errors->first('product_name') }}</p> @endif

if I submit my form with product name, instead of throwing error from validate,

Answer 1

By seeing your code, to me it seems your product_id should be an array. So the validation should be:

'product_id' => 'array|required|min:1',

'product_id.*' => 'required',

instead of

'product_id' => 'required|min:1',

Answer 2

Try to use $request->validate([... instead of $this->validate($request, [.... I'm not sure is there validate in your controller...