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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace DigitalWand\AdminHelper\Widget;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Bitrix\Iblock\ElementTable;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Bitrix\Main\Loader;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Bitrix\Main\Localization\Loc;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Виджет для выбора элемента инфоблока.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Доступные опции:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * <ul>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * <li> <b>IBLOCK_ID</b> - (int) ID инфоблока  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * <li> <b>INPUT_SIZE</b> - (int) значение атрибута size для input </li>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * <li> <b>WINDOW_WIDTH</b> - (int) значение width для всплывающего окна выбора элемента </li>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * <li> <b>WINDOW_HEIGHT</b> - (int) значение height для всплывающего окна выбора элемента </li>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * </ul>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author Nik Samokhvalov <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class IblockElementWidget extends NumberWidget  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    static protected $defaults = array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        'FILTER' => '=',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        'INPUT_SIZE' => 5,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        'WINDOW_WIDTH' => 600,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        'WINDOW_HEIGHT' => 500,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function __construct(array $settings = array())  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        Loc::loadMessages(__FILE__);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        Loader::includeModule('iblock'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        parent::__construct($settings);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * {@inheritdoc} | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getEditHtml()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $iblockId = (int) $this->getSettings('IBLOCK_ID'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $inputSize = (int) $this->getSettings('INPUT_SIZE'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $windowWidth = (int) $this->getSettings('WINDOW_WIDTH'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $windowHeight = (int) $this->getSettings('WINDOW_HEIGHT'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $name = 'FIELDS';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $key = $this->getCode();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $elementId = $this->getValue();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (!empty($elementId)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $rsElement = ElementTable::getById($elementId);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if (!$element = $rsElement->fetchAll()) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $element['NAME'] = Loc::getMessage('IBLOCK_ELEMENT_NOT_FOUND'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $elementId = '';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return '<input name="' . $this->getEditInputName() . '"  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                     id="' . $name . '[' . $key . ']"  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                     value="' . $elementId . '"  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                     size="' . $inputSize . '"  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                     type="text">' .  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        '<input type="button"  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    value="..."  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    onClick="jsUtils.OpenWindow(\'/bitrix/admin/iblock_element_search.php?lang=' . LANGUAGE_ID  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        . '&IBLOCK_ID=' . $iblockId . '&n=' . $name . '&k=' . $key . '\', ' . $windowWidth . ', '  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        . $windowHeight . ');">' . ' <span id="sp_' . md5($name) . '_' . $key . '" >'  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        . static::prepareToOutput($element['NAME'])  | 
            
                            
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                        . '</span>';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * {@inheritdoc} | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function getValueReadonly()  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $elementId = $this->getValue();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        if (!empty($elementId)) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $rsElement = ElementTable::getList([  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                'filter' => [  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                    'ID' => $elementId  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                ],  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                'select' => [  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                    'ID',  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                    'NAME',  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                    'IBLOCK_ID',  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                    'IBLOCK.IBLOCK_TYPE_ID',  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                ]  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            ]);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $element = $rsElement->fetch();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            return '<a href="/bitrix/admin/iblock_element_edit.php?IBLOCK_ID=' . $element['IBLOCK_ID']  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            . '&type=' . $element['IBLOCK_ELEMENT_IBLOCK_IBLOCK_TYPE_ID'] . '&ID='  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            . $elementId . '&lang=ru">[' . $elementId . '] ' . static::prepareToOutput($element['NAME']) . '</a>';  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * {@inheritdoc} | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function generateRow(&$row, $data)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $elementId = $this->getValue();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (!empty($elementId)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $rsElement = ElementTable::getList([  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'filter' => [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'ID' => $elementId  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                ],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'select' => [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'ID',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'NAME',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'IBLOCK_ID',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'IBLOCK.IBLOCK_TYPE_ID',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                ]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ]);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $element = $rsElement->fetch();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $html = '<a href="/bitrix/admin/iblock_element_edit.php?IBLOCK_ID=' . $element['IBLOCK_ID']  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                . '&type=' . $element['IBLOCK_ELEMENT_IBLOCK_IBLOCK_TYPE_ID'] . '&ID='  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                . $elementId . '&lang=ru">[' . $elementId . '] ' . static::prepareToOutput($element['NAME']) . '</a>';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    132
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                                                     | 
                
                 | 
                            $html = '';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    133
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    134
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    135
                 | 
                                    
                                                     | 
                
                 | 
                        $row->AddViewField($this->getCode(), $html);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    136
                 | 
                                    
                                                     | 
                
                 | 
                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    137
                 | 
                                    
                                                     | 
                
                 | 
                }  | 
            
            
                                                        
            
                                    
            
            
                | 
                    138
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                        
If you define a variable conditionally, it can happen that it is not defined for all execution paths.
Let’s take a look at an example:
In the above example, the variable $x is defined if you pass “foo” or “bar” as argument for $a. However, since the switch statement has no default case statement, if you pass any other value, the variable $x would be undefined.
Available Fixes
Check for existence of the variable explicitly:
Define a default value for the variable:
Add a value for the missing path: