Question

Now I need a three level selected option, and the second selected option will change with first selected option’s value,so I use the jquery plugin “select box manipulation” can do it,
but now I use codeigniter, so I want to integrate it using libraries, how can do it?

How can I integrate jquery select box manipulation incodeigniter?
Do I need to use a library, or are there other methods to do it?

Who can give me some point?
http://www.texotela.co.uk/code/jquery/select/

Answer 1

No, you don’t need a library. Just create methods in your controller to get data for your forms.

One idea would be to return the respective form field to the request to be populated in a div or something.

View:

<select name="shirts" onchange="getField(this.value)">
<option value="small">Small Shirt</option>
<option value="med">Medium Shirt</option>
<option value="large" selected="selected">Large Shirt</option>
<option value="xlarge">Extra Large Shirt</option>
</select>
<div id="field2"></div>

Javascript:

function getField(val){
    $.ajax({
        type:"get",
        url: "/controller/getField/"+val,
        success: function(data){
            $('#field2').html(data);
        }
    });
}

Controller:

...
public function getField($val=''){
    switch($val){
       case 'small':
       //$options = get data and do stuff; 
       echo form_dropdown('shirts', $options, 'large');
       break;
    }
}

http://codeigniter.com/user_guide/helpers/form_helper.html
http://api.jquery.com/jQuery.ajax/