how to make a custom validation rule in laravel with checking the value in Database code example
Example 1: custom rule laravel validation
public function store()
{
$this->validate(request(), [
'song' => [function ($attribute, $value, $fail) {
if ($value <= 10) {
$fail(':attribute needs more cowbell!');
}
}]
]);
}
Example 2: laravel request validation rules for create and update
public function rules()
{
$rules = [
'name' => 'required|string|unique:products|max:255',
];
if (in_array($this->method(), ['PUT', 'PATCH'])) {
$product = $this->route()->parameter('product');
$rules['name'] = [
'required',
'string',
'max:255',
Rule::unique('loan_products')->ignore($product),
];
}
return $rules;
}