dynamic params on plugin developing

Hi!
I am developing a cb tab plugin. On this plugin I need to list on the backend text params that would reflect #__comprofiler_fields fields.

I am trying to find a way to get this field dynamically using:

[code:1]
<!--XML FILE-->
<url addpath="/elements">
<param name="cbfields" type="cbfields" class="JElementCbfields" default="" label="Select fields : " description="Select fields For profile completeness bar" />
</url>[/code:1]

[code:1]
//PHP CLASS
class JElementCbfields extends JElement {
var $_name = 'cbfields';

function fetchElement($name, $value, &$node, $control_name) {

$db = &JFactory::getDBO();

$query = "SELECT name, CONCAT(description,' - ','#__comprofiler.',name,' (set zero to skip field)') as description
FROM #__comprofiler_fields
WHERE published = 1
AND type IN ('text','multiselect','predefined','image')";
$db->setQuery($query);

$rows = $db->loadObjectList();
$xml = "";
foreach ( $rows as $row ) {
$xml .= "<param name=\"".$row->name."\" type=\"text\" default=\"0\" label=\"".$row->name."\" description=\"".$row->description."\" size=\"2\" />";
}
return $xml;
}
}
[/code:1]

It is a big deal that I have to give value to each field param, because I use it on my plugin.

What I need as result is something similar to the attached image.

Errors the I got on backend:
Notice: Use of undefined constant _HANDLER - assumed '_HANDLER' in /administrator/components/com_comprofiler/library/cb/cb.params.php on line 1244

Post edited by: sohoprospecting, at: 2010/07/30 01:23

Post edited by: sohoprospecting, at: 2010/07/30 01:39

Can we get some help on this - we see the capability of displaying CB fields in CBsubs - so we're pretty sure its possible.

The following is how to call an external class function inside of your plugins XML. Please note this call should be made to a class and function that is a part of your plugins actual core PHP files.

[code:1]
<param name="UNIQUE_NAME" type="custom" class="CLASS" method="FUNCTION" default="" label="TITLE" description="DESCRIPTION" />
[/code:1]

Your usage is not specifying a method (function). You just called a class is all. Based off the code you provided the parameter should be configured as follows.

[code:1]
<param name="cbfields" type="custom" class="JElementCbfields" method="fetchElement" default="" label="Select fields : " description="Select fields For profile completeness bar" />
[/code:1]

Hi Kyle!

I tried edit my xml the way you said. But now, on the tab backend, I got the error:

[code:1]Method to render XML view element url is not implemented ![/code:1]

The file /elements/cbfields.php is part of the core by using:

[code:1]<filename plugin="plug_completeness">/elements/cbfields.php</filename> [/code:1]

Do you think is something wrong with my class? Perhaps not following a cb standart?

Thank you!

Yes, you're not extending a CB class. You need to extend cbPluginHandler or cbTabHandler. You need to review another plugin that is using such usage as it's not done correctly. Your parameter is now correct, but the class and function are completely wrong. The following is an example of how to structure the parameter, class, and function.

Parameter
[code:1]
<param name="myfield" type="custom" class="getcbMyTab" method="loadFieldsList" default="" label="Field" description="This is a custom field." />
[/code:1]

Class
[code:1]
class getcbMyTab extends cbTabHandler {
[/code:1]

Function
[code:1]
function loadFieldsList( $name, $value, $control_name ) {
global $_CB_database;

$query = 'SELECT ' . $_CB_database->NameQuote( 'fieldid' ) . ' AS value'
. ', ' . $_CB_database->NameQuote( 'title' ) . ' AS text'
. "\n FROM " . $_CB_database->NameQuote( '#__comprofiler_fields' )
. "\n WHERE " . $_CB_database->NameQuote( 'published' ) . " = 1"
. "\n ORDER BY " . $_CB_database->NameQuote( 'ordering' );
$_CB_database->setQuery( $query );
$rows = $_CB_database->loadObjectList();

if ( ! is_array( $rows ) ) {
trigger_error( 'CB Fields load list error: ' . $_CB_database->stderr(), E_USER_WARNING );
return false;
}

array_unshift( $rows, moscomprofilerHTML::makeOption( '', CBTxt::T( '- Select Field -' ) ) );

if ( isset( $value ) ) {
$valAsObj = array_map( create_function( '$v', '$o=new stdClass(); $o->value=$v; return $o;' ), explode( '|*|', $value ) );
} else {
$valAsObj = null;
}

return moscomprofilerHTML::«»selectList( $rows, ( $control_name ? $control_name . '[]' : $name ), null, 'value', 'text', $valAsObj, 0, true );
}
[/code:1]