<?php use Illuminate\Support\Facades\Schema; use Illuminate\Database\Schema\Blueprint; use Illuminate\Database\Migrations\Migration; class SetAllocationToReferenceNullOnServerDelete extends Migration { /** * Run the migrations. */ public function up() { Schema::table('allocations', function (Blueprint $table) { $table->dropForeign(['server_id']); $table->foreign('server_id')->references('id')->on('servers')->onDelete('set null'); }); } /** * Reverse the migrations. */ public function down() { Schema::table('allocations', function (Blueprint $table) { $table->dropForeign(['server_id']); $table->foreign('server_id')->references('id')->on('servers'); }); } }