laravel request validation attributes code example

Example 1: email validation in laravel

'email' => 'required|email|unique:users,email',
//@sujay

Example 2: how to add an custom error to validater error in laravel

if (request('event') == null) {
    $validator->errors()->add('event', 'Please select an event');
}

Example 3: 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;
    }