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12-19-2008, 11:50 AM

[eluser]stoefln[/eluser]
i actually doubt that its as easy as in your code to retrieve a subpart by a elements id.
finally i got it running with following code:

Code:
/**

     * Load Fragment

     *

     * This function is used to load a fragment of a "view" file.  It has four parameters:

     *

     * 1. The name of the "view" file to be included.

     * 2. An associative array of data to be extracted for use in the view.

     *

     * 3. the id of the HTML element

     *

     * 4. TRUE/FALSE - whether to return the data or load it. In some cases it's advantageous

     *    to be able to return data so that a developer can process it in some way.

     *

     * @access    public

     * @param    string

     * @param    array

     * @param    string

     * @param    bool

     * @return    mixed

     */

    public function fragmentById($view, $vars, $elementId, $return = FALSE){

        $html = $this->_ci_load(

                array(

                    '_ci_view' => $view,

                    '_ci_vars' => $this->_ci_object_to_array($vars),

                    '_ci_return' => TRUE

                    )

                );

        $doc = new DOMDocument();

        $docHtml = '&lt;html&gt;'.$html.'&lt;/html&gt;';

        $doc->loadXML($docHtml);

        // we need a schema here since php needs a validation step befor the method "getElementById"

        $rng = '<grammar >

            <start>

                <element>

                    <anyName/>

                    <ref name="anythingID"/>

                </element>

            </start>

            <define name="anythingID">

                <zeroOrMore>

                    <choice>

                        <element>

                            <anyName/>

                            <ref name="anythingID"/>

                        </element>

                        <attribute name="id">

                            <data type="ID"/>

                        </attribute>

                        <zeroOrMore>

                            <attribute><anyName/></attribute>

                        </zeroOrMore>

                        <text/>

                    </choice>

                </zeroOrMore>

            </define>

        </grammar>';

        $doc->relaxNGValidateSource($rng);

        $element = $doc->getElementById($elementId);

        if(!$element){

            throw new Exception("No element with id \"".$elementId."\" found!");

        }

        $subpart = '';

        // loop through all childNodes, getting html

        $children = $element->childNodes;

        foreach ($children as $child) {

            $tmp_doc = new DOMDocument();

            $tmp_doc->appendChild($tmp_doc->importNode($child,true));

            $subpart .= $tmp_doc->saveHTML();

        }

        if($return == FALSE){

            echo $subpart;

        }

        unset($tmp_doc);

        unset($doc);

        return $subpart;

    }