how to return validator true in laravel code example

Example 1: if any error in blade laravel

@if ($errors->any())
     @foreach ($errors->all() as $error)
         <div>{{$error}}</div>
     @endforeach
 @endif

Example 2: laravel validation types for float

//For float, must use numeric validator

/**
  * Get the validation rules that apply to the request.
  *
  * @return array
 */
public function rules()
{
  return [
    'field' => 'numeric'
  ];
}