I am using Event Booking to collect biographical info on the individuals are registering. I needed a simple way to limit the length of what people type, so I updated the _renderTextarea function in helper/fields.php file as follows (see additions in red.) This uses the text input Size property to specify the total number of characters that can be typed in the textarea. It works really well! Would be a great feature to add to Event Booking.
/**
* Render textarea object
*
* @param object $row
*/
function _renderTextarea($row) {
if ($this->_loadIn == 2)
$postedValue = $row->default_values ;
else
$postedValue = JRequest::getVar($row->name, $row->default_values) ;
?>
<tr>
<td class="title_cell">
<?php
echo $row->title;
if ($row->required)
echo '<span class="required">*</span>';
?>
</td>
<td>
<textarea name="<?php echo $row->name ; ?>" rows="<?php echo $row->rows; ?>" cols="<?php echo $row->cols ; ?>" class="<?php echo $row->css_class; ?>"
onKeyDown="limitText(this.form.<?php echo $row->name ; ?>,this.form.countdown, <?php echo $row->size ; ?>);"
onKeyUp = "limitText(this.form.<?php echo $row->name ; ?>,this.form.countdown, <?php echo $row->size ; ?>);"><?php echo $postedValue; ?></textarea>
</td>
</tr>
<tr>
<td></td>
<td>
<font size="1">
You have <input readonly type="text" name="countdown" style="width: 20px;" value="<?php echo $row->size ; ?>"</input> of <?php echo $row->size ; ?> characters left.</font>
<script language="javascript" type="text/javascript">
function limitText(limitField, limitCount, limitNum) {
if (limitField.value.length > limitNum) {
limitField.value = limitField.value.substring(0, limitNum);
} else {
limitCount.value = limitNum - limitField.value.length;
}
}
</script>
</td>
</tr>
