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<?php
use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;
class AddAuthorOfABook extends Migration
{
/**
* Run the migrations.
*
* @return void
*/
public function up()
{
Schema::table(
'books', function (Blueprint $table) {
$table->bigInteger('author_id')->unsigned()->nullable();
$table->foreign('author_id')->references('id')->on('authors')->onUpdate('cascade')->onDelete('set null');
}
);
}
/**
* Reverse the migrations.
*
* @return void
*/
public function down()
{
//
}
}
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