Using a HTML select element to add get parameters to URL

I'm on a page like /gallery.php?place=300&name=place1, and I want it so that when I submit this form it goes to /gallery.php?place=300&name=place1&tag=X, where X is the number of the tag selected.

What's wrong here?

<form action="/gallery.php?place=300&name=place1" method="get">
    <s开发者_如何学JAVAelect name="tag">
        <option value=1>Aerial</option>
        <option value=2>Autumn</option>
        <option value=4>Boats</option>
        <option value=6>Buildings</option>
        <option value=7>Canals</option>
    </select>
    <input type="submit" value="Filter"/>
</form>

Use hidden inputs instead of trying to use the query string twice:

<form action="/gallery.php" method="get">
    <select name="tag">
        <option value=1>Aerial</option>
        <option value=2>Autumn</option>
        <option value=4>Boats</option>
        <option value=6>Buildings</option>
        <option value=7>Canals</option>
    </select>
    <input type="hidden" name="place" value="300" />
    <input type="hidden" name="name" value="place1" />
    <input type="submit" value="Filter" />
</form>

Using a form with method get was overwriting the query string in your form action.

This extra parameters seem to work for me locally when using "post" instead of "get." Is that it?