$vote = Vote::updateOrCreate(
    ['thread_id' => $id, 'user_id' => Auth::id()],
    ['type' => $request->type]
);

Schema::create('votes', function (Blueprint $table) {
    $table->increments('id');
    $table->integer('user_id')->unsigned();
    $table->integer('thread_id')->unsigned();
    $table->boolean('type');
    $table->timestamps();

    $table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');
    $table->foreign('thread_id')->references('id')->on('threads')->onDelete('cascade');
});