T_PAAMAYIM_NEKUDOTAYIM Error after override CButtonColumn - php

Question

I overrode CButtonColumn class and code worked in perfect way on localhost(windows) , but when I uploaded it to linux server I had this error :
Parse error: syntax error, unexpected T_PAAMAYIM_NEKUDOTAYIM in /home/xxx/public_html/protected/components/GridView/XCButtonColumn.php on line 65
I read about what mean "T_PAAMAYIM_NEKUDOTAYIM" , it's mean "::"
link here
,but I didn't understood what i can do to fix problem .
line 65:
if (is_array($modelClass::model()->primaryKey))
This is my code :
<?php
class XCButtonColumn extends CButtonColumn
{
public $htmlOptions = array('class' => 'center vcenter');
public $viewButtonOptions = array('class' => 'btn btn-default tip view');
public $viewButtonImageUrl = '';
public $viewButtonHtml;
public $updateButtonOptions = array('class' => 'btn btn-default tip update');
public $updateButtonImageUrl = '';
public $updateButtonHtml;
public $deleteButtonOptions = array('class' => 'btn btn-default tip delete');
public $deleteButtonImageUrl = '';
public $deleteButtonHtml;
public $showImage = false;
public $showHtml = true;
protected function renderButton($id, $button, $row, $data)
{
if (isset($button['visible']) && !$this->evaluateExpression($button['visible'], array('row' => $row, 'data' => $data))) return;
$label = isset($button['label']) ? $button['label'] : $id;
$url = isset($button['url']) ? $this->evaluateExpression($button['url'], array('data' => $data, 'row' => $row)) : '#';
$options = isset($button['options']) ? $button['options'] : array();
if (!isset($options['title'])) $options['title'] = $label;
if ($this->showImage) {
if (isset($button['imageUrl']) && is_string($button['imageUrl'])) {
echo CHtml::link(CHtml::image($button['imageUrl'], $label), $url, $options);
} else {
echo CHtml::link($label, $url, $options);
}
} else {
if (isset($button['html']) && is_string($button['html'])) {
echo CHtml::link($button['html'], $url, $options);
} else {
echo CHtml::link($button['html'], $url, $options);
}
}
}
protected function initDefaultButtons()
{
if ($this->viewButtonLabel === null) $this->viewButtonLabel = Yii::t('zii', 'View');
if ($this->updateButtonLabel === null)
$this->updateButtonLabel = Yii::t('zii', 'Update');
if ($this->deleteButtonLabel === null)
$this->deleteButtonLabel = Yii::t('zii', 'Delete');
if ($this->viewButtonImageUrl === null)
$this->viewButtonImageUrl = $this->grid->baseScriptUrl .
'/view.png';
if ($this->updateButtonImageUrl === null)
$this->updateButtonImageUrl = $this->grid->baseScriptUrl
. '/update.png';
if ($this->deleteButtonImageUrl === null)
$this->deleteButtonImageUrl = $this->grid->baseScriptUrl
. '/delete.png';
if ($this->viewButtonHtml === null)
$this->viewButtonHtml = '<i class="icon-zoom-in iconwhite"></i>';
if ($this->updateButtonHtml === null)
$this->updateButtonHtml = '<i class="icon-edit iconwhite"></i>';
if ($this->deleteButtonHtml === null)
$this->deleteButtonHtml = '<i class="icon-trash iconwhite"></i>';
if ($this->deleteConfirmation === null)
$this->deleteConfirmation = Yii::t('zii', 'Are you sure you want to delete this item?');
$modelClass = $this->grid->dataProvider->modelClass;
$controller = strtolower($modelClass);
if (is_array($modelClass::model()->primaryKey))
$paramExpression = '",$data->primaryKey)';
else
$paramExpression = '",array("id"=>$data->primaryKey))';
foreach (array('view', 'update', 'delete') as $id) {
$button = array(
'label' => $this->{$id . 'ButtonLabel'},
'url' => 'Yii::app()->urlManager->createUrl("' . "$controller/$id$paramExpression",
'imageUrl' => $this->{$id . 'ButtonImageUrl'},
'html' => $this->{$id . 'ButtonHtml'},
'options' => $this->{$id . 'ButtonOptions'},
);
if (isset($this->buttons[$id]))
$this->buttons[$id] = array_merge($button, $this->buttons[$id]);
else
$this->buttons[$id] = $button;
}
if (!isset($this->buttons['delete']['click'])) {
if (is_string($this->deleteConfirmation))
$confirmation = "if(!confirm(" .
CJavaScript::encode($this->deleteConfirmation) . ")) return false;";
else
$confirmation = '';
if (Yii::app()->request->enableCsrfValidation) {
$csrfTokenName = Yii::app()->request->csrfTokenName;
$csrfToken = Yii::app()->request->csrfToken;
$csrf = "\n\t\tdata:{ '$csrfTokenName':'$csrfToken'
},";
} else
$csrf = '';
if ($this->afterDelete === null)
$this->afterDelete = 'function(){}';
$this->buttons['delete']['click'] = <<<EOD
function() {
$confirmation
var th = this,
afterDelete = $this->afterDelete;
jQuery('#{$this->grid->id}').yiiGridView('update', {
type: 'POST',
url: jQuery(this).attr('href'),$csrf
success: function(data) {
jQuery('#{$this->grid->id}').yiiGridView('update');
afterDelete(th, true, data);
},
error: function(XHR) {
return afterDelete(th, false, XHR);
}
});
return false;
}
EOD;
}
}
}
Thanks in advance

Answer 1

First thanks to benka to help , the problem is in php version and php 5.2 not support
this line :
if (is_array($modelClass::model()->primaryKey))
So to be work on php 5.2 I changed it to be :
if (is_array(CActiveRecord::model($modelClass)->primaryKey))
References :
Link 1
Link 2

Answer 2

should be -> instead of ::
if (is_array($modelClass->model()->primaryKey))