laravel unique validation on update unique value code example

Example 1: laravel set field unique

Schema::table('manufacturers', function($table)
{
    $table->string('name')->unique(); 
});

Example 2: set unique value validation for laravel form request

use Illuminate\Validation\Rule;

public function rules()
{
    return [
	    'title' => [
		    'required',
		    Rule::unique('posts', 'title')->ignore($this->post)
	    ]
    ]; 
}