Question

I’m working out of codeigniter and trying to find out how I can change the value of a session variable when the user changes a dropdown menu.

<select name="testselect">
    <option value="1">1</option>
    <option value="2">2</option>
    <option value="3">3</option>
    <option value="4">4</option>
    <option value="5">5</option>
</select>

Ideas?

Answer 1

Since you tagged your question with jQuery, I’m presuming you’re using it somewhere in your page, so you change your HTML to this:

<select name="testselect" id="testselect">
    <option value="1">1</option>
    <option value="2">2</option>
    <option value="3">3</option>
    <option value="4">4</option>
    <option value="5">5</option>
</select>

and add this to your $(document).ready( .. ); call to capture changes to that dropdown like so:

$(document).ready(function() {
    $('#testselect').change(function() {
        // POST the changed value to a method in a controller that can accept
        // a parameter and that'll set the session variable for you
        $.post("http://location/to/controller/method/",
          { testselect: this.value },
          'html'
        ); 
    });
});