如何在表单提交上发送参数到路由

Question

I have the following route:

Route::get("/changeLang/{lang}", 'SiteController@changeLang');

And I have the following form:

<form action="{{ url('/changeLang/???') }}" method="GET">
    {{ csrf_field() }}
    <select onchange="this.form.submit()" name="lang">
        <option value="eng">English</option>
        <option value="cro">Hrvatski</option>
    </select>
</form>

So I'd like to submit that form to that route so that the route receives the language that the user selected. I don't know should form method be GET or POST.

So how do I specify link to that route in form action so that the selected language gets sent? What to put instead of those question marks at the end of the URL?

And I don't like to use Laravel's Form facade (or is it just class) to echo HTML elements, so I'd like to do it without that if possible.

Answer 1

You can not submit a form and have it generate a URL in the format that you are expecting. What is going to happen is you will get a URL in the format of /changeLang/lang?lang=cro

So you have two options. You submit the form and it redirects based off the querysting value.

OR you add JavaScript to your form so you produce the url that you are after.

<select onchange="window.location.href='/changeLang/' + this.value;" name="lang">