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Suggestion to video.derekallard.com

After saw the video, a suggestion came to me. How can i pick an id from selected item on li list?

My final code is about that:

The method in my controller
$output = '<ul>';
foreach ($cidades->result() as $cidade)
    $output .= '<li id="'.$cidade->id_cidade.'">'.$cidade->nome_cidade.' - '.$cidade->sigla_estado.'</li>';
$output .= '</ul>';
echo $output;
Where $cidade->id_cidade is the unique id that i want do see after

My view file
&lt;input type="hidden" id="id_cidade" name="id_cidade" value="" /&gt;

    new Ajax.Autocompleter('txt_cidade', 'resultados', 'cidades/lista_cidade/', {afterUpdateElement : setCidadeId})
    function setCidadeId(inputField, selectedItem)
        $('id_cidade').value = selectedItem.id;

So, when i post my form, i'll have a hidden field called cidade_id that contains the unique id!!

The video, all is correct, but, in my case (and i think some other users case), you need the id, not the text in the input field.

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