Notice: Undefined property: Proxy::checkFieldAtributeUnit opencart - opencart

Question

Problem open cart 2.3
extension : Attribute Custom Multilanguage Units
When enabled
Notice: Undefined property: Proxy::checkFieldAtributeUnit in vqcache\vq2-admin_controller_catalog_attribute.php on line 13
$this->model_catalog_attribute->checkFieldAtributeUnit();
extension
<file name="admin/model/catalog/attribute.php">
<!-- Check If column exists -->
<operation>
<search position="after"><![CDATA[
class ModelCatalogAttribute extends Model {
]]></search>
<add><![CDATA[
public function checkFieldAtributeUnit() {
$hasModelAtribute = FALSE;
$result = $this->db->query( "DESCRIBE `".DB_PREFIX."attribute_description`;" );
foreach ($result->rows as $row) {
if ($row['Field'] == 'unit') {
$hasModelAtribute = TRUE;
break;
}
}
if (!$hasModelAtribute) {
$sql = "ALTER TABLE `".DB_PREFIX."attribute_description` ADD `unit` VARCHAR( 255 ) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL DEFAULT ''";
$this->db->query( $sql );
}
}
]]></add>
</operation>
<!-- Save value -->
<operation>
<search position="before"><![CDATA[
$this->event->trigger('post.admin.attribute.edit', $attribute_id);
]]></search>
<add><![CDATA[
foreach ($data['attribute_unit'] as $language_id => $value2) {
$this->db->query("UPDATE " . DB_PREFIX . "attribute_description SET unit = '" . $this->db->escape($value2['unit']) . "' WHERE attribute_id = '" . (int)$attribute_id . "' AND language_id = '" . (int)$language_id . "'");
}
]]></add>
</operation>
<operation>
<search position="after"><![CDATA[
'ad.name',
]]></search>
<add><![CDATA[
'unit',
]]></add>
</operation>
<!-- New function for units -->
<operation>
<search position="before"><![CDATA[
public function getAttributeDescriptions($attribute_id) {
]]></search>
<add><![CDATA[
public function getAttributeUnits($attribute_id) {
$unit_data = array();
$query = $this->db->query("SELECT * FROM " . DB_PREFIX . "attribute_description WHERE attribute_id = '" . (int)$attribute_id . "'");
foreach ($query->rows as $result) {
$unit_data[$result['language_id']] = array('unit' => $result['unit']);
}
return $unit_data;
}
]]></add>
</operation>
</file>
<file name="admin/controller/catalog/attribute.php">
<!-- Check unit column -->
<operation>
<search position="before" index="1"><![CDATA[
$this->getList();
]]></search>
<add><![CDATA[
$this->model_catalog_attribute->checkFieldAtributeUnit();
]]></add>
</operation>
<operation>
<search position="after"><![CDATA[
$data['attributes'][] = array(
]]></search>
<add><![CDATA[
'unit' => $result['unit'],
]]></add>
</operation>
<operation>
<search position="before"><![CDATA[
$data['button_delete']
]]></search>
<add><![CDATA[
$data['column_unit'] = $this->language->get('column_unit');
]]></add>
</operation>
<operation>
<search position="before"><![CDATA[
$data['sort_name']
]]></search>
<add><![CDATA[
$data['sort_unit'] = $this->url->link('catalog/attribute', 'token=' . $this->session->data['token'] . '&sort=unit' . $url, 'true');
]]></add>
</operation>
<operation>
<search position="before"><![CDATA[
$data['button_save']
]]></search>
<add><![CDATA[
$data['entry_unit'] = $this->language->get('entry_unit');
]]></add>
</operation>
<operation>
<search position="before"><![CDATA[
if (isset($this->request->post['attribute_group_id'])) {
]]></search>
<add><![CDATA[
if (isset($this->request->post['attribute_unit'])) {
$data['attribute_unit'] = $this->request->post['attribute_unit'];
} elseif (isset($this->request->get['attribute_id'])) {
$data['attribute_unit'] = $this->model_catalog_attribute->getAttributeUnits($this->request->get['attribute_id']);
} else {
$data['attribute_unit'] = array();
}
]]></add>
</operation>
</file>
You have tried more than one copy and the same error
Any Help ?

Answer 1

search not found. $this->event->trigger('post.admin.attribute.edit', $attribute_id); in admin/model/catalog/attribute.php