Joomla> Selected Drop Down Nicht zu Server

Question

Ich weiß, ich vermisse hier etwas Grundlegendes, aber für das Leben von mir kann ich das nicht herausfinden.

Ich brauche das ausgeblendete Eingabefeld, um den vom Benutzer im Drop-Down-Menü ausgewählten Kurs anzuzeigen.

============================================== =======================

<p><b>1. Select Course:</b></p> 
<?php 

$db = JFactory :: getDBO(); 
$query = "select name from #__guru_category order by name ASC"; 
$db->setQuery($query); 
$result = $db->loadObjectList(); 
$options = array(); 
$options[] = JHTML::_('select.option','Select Course'); 
foreach($result as $row) 
{ 
$options[] = JHTML::_('select.option', $row->name); 
} 
$dropdown = JHTML::_('select.genericlist', $options, 'class="inputbox"', 'subject', 'value', 'text'); 
echo $dropdown; 

?> 
<p><b>2. Select assignment file to upload:</b></p> 
<p><input type="file" name="fileToUpload" id="fileToUpload"></p> 
**<input type="hidden" name="subject" id="subject" value="">** 
<p><input type="submit" value="Upload Assignment File" name="submit"></p> 

</form> 

==================== ================================

Answer 1

$dropdown = JHTML::_('select.genericlist', $options, 'class="inputbox"', 'subject', 'value', 'text'); 

Sie haben das Argument Wert Bestelliste

missplaced

genericlist($arr, $name, $attribs=null, $key= 'value', $text= 'text', $selected=NULL, $idtag=false, $translate=false) 

folow the l Tinte: https://docs.joomla.org/API15:JHTMLSelect/genericlist

Hier ist die Lösung

<?php 
$db = JFactory :: getDBO(); 
$query = "select name from #__guru_category order by name ASC"; 
$db->setQuery($query); 
$result = $db->loadObjectList(); 

$options = array(); 
$attr = 'onchange="UpdateUsername(this.options[this.selectedIndex].value);"'; 
$attr .= ' class="inputbox"'; 

$options[] = JHTML::_('select.option','Select Course'); 
foreach($result as $row){ 
    $options[] = JHTML::_('select.option', $row->name); 
} 
$dropdown = JHTML::_('select.genericlist', $options,'subject',$attr, 'value', 'text'); 
echo $dropdown; 

?> 
<p><b>2. Select assignment file to upload:</b></p> 
<p><input type="file" name="fileToUpload" id="fileToUpload"></p> 
<input type="hidden" name="subject" id="subject" value=""> 
<p><input type="submit" value="Upload Assignment File" name="submit"></p> 
<script type="text/javascript"> 
function UpdateUsername(selected){ 
document.getElementById(subject).value= selected; 
} 
</script>