char('uuid', 36)->after('id'); $table->string('author')->after('service_id'); $table->dropColumn('tag'); }); DB::transaction(function () { DB::table('service_options')->select([ 'service_options.id', 'service_options.uuid', 'services.author AS service_author', ])->join('services', 'services.id', '=', 'service_options.service_id')->get()->each(function ($option) { DB::table('service_options')->where('id', $option->id)->update([ 'author' => $option->service_author, 'uuid' => Uuid::uuid4()->toString(), ]); }); }); Schema::table('service_options', function (Blueprint $table) { $table->unique('uuid'); }); } /** * Reverse the migrations. */ public function down() { Schema::table('service_options', function (Blueprint $table) { $table->dropColumn('uuid'); $table->dropColumn('author'); $table->string('tag'); }); DB::transaction(function () { DB::table('service_options')->select(['id', 'tag'])->get()->each(function ($option) { DB::table('service_options')->where('id', $option->id)->update([ 'tag' => str_random(10), ]); }); }); } }