[SOLVED!] Error message in category_id

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Undefined variable: category in /home/khaleeji/public_html/vqmod/vqcache/vq2-catalog_controller_product_product.php on line 800

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$category_info = $this->model_catalog_category->getCategory($category_id)

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Undefined index: category_id in /home/khaleeji/public_html/vqmod/vqcache/vq2-catalog_controller_product_product.php on line 188

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vqcache/vq2-catalog_controller_product_product.php

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}else{
                $cat_path = $category_info['category_id'];

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<?php  
class ControllerProductProduct extends Controller {
	private $error = array(); 

	public function index() { 
		$this->language->load('product/product');

		$this->data['breadcrumbs'] = array();

		$this->data['breadcrumbs'][] = array(
			'text'      => $this->language->get('text_home'),
			'href'      => $this->url->link('common/home'),			
			'separator' => false
		);

		$this->load->model('catalog/category');	

		if(isset($this->session->data['errors'])) {
			$this->data['errors'] = $this->session->data['errors'];
		}
		if($this->isVisitorMobile()) {
			$this->language->load('omf/common');
		}
			

		if (isset($this->request->get['path'])) {
			$path = '';

			$parts = explode('_', (string)$this->request->get['path']);

			$category_id = (int)array_pop($parts);

			foreach ($parts as $path_id) {
				if (!$path) {
					$path = $path_id;
				} else {
					$path .= '_' . $path_id;
				}

				$category_info = $this->model_catalog_category->getCategory($path_id);

				if ($category_info) {
					$this->data['breadcrumbs'][] = array(
						'text'      => $category_info['name'],
						'href'      => $this->url->link('product/category', 'path=' . $path),
						'separator' => $this->language->get('text_separator')
					);
				}
			}

			// Set the last category breadcrumb
			 $category_info = $this->model_catalog_category->getCategory($category_id);

			if ($category_info) {			
				$url = '';

				if (isset($this->request->get['sort'])) {
					$url .= '&sort=' . $this->request->get['sort'];
				}	

				if (isset($this->request->get['order'])) {
					$url .= '&order=' . $this->request->get['order'];
				}	

				if (isset($this->request->get['page'])) {
					$url .= '&page=' . $this->request->get['page'];
				}

				if (isset($this->request->get['limit'])) {
					$url .= '&limit=' . $this->request->get['limit'];
				}

				$this->data['breadcrumbs'][] = array(
					'text'      => $category_info['name'],
					'href'      => $this->url->link('product/category', 'path=' . $this->request->get['path'].$url),
					'separator' => $this->language->get('text_separator')
				);
			}
			
		}
	

		$this->load->model('catalog/manufacturer');	

		if (isset($this->request->get['manufacturer_id'])) {
			$this->data['breadcrumbs'][] = array( 
				'text'      => $this->language->get('text_brand'),
				'href'      => $this->url->link('product/manufacturer'),
				'separator' => $this->language->get('text_separator')
			);	

			$url = '';

			if (isset($this->request->get['sort'])) {
				$url .= '&sort=' . $this->request->get['sort'];
			}	

			if (isset($this->request->get['order'])) {
				$url .= '&order=' . $this->request->get['order'];
			}	

			if (isset($this->request->get['page'])) {
				$url .= '&page=' . $this->request->get['page'];
			}

			if (isset($this->request->get['limit'])) {
				$url .= '&limit=' . $this->request->get['limit'];
			}

			$manufacturer_info = $this->model_catalog_manufacturer->getManufacturer($this->request->get['manufacturer_id']);

			if ($manufacturer_info) {	
				$this->data['breadcrumbs'][] = array(
					'text'	    => $manufacturer_info['name'],
					'href'	    => $this->url->link('product/manufacturer/info', 'manufacturer_id=' . $this->request->get['manufacturer_id'] . $url),					
					'separator' => $this->language->get('text_separator')
				);
			}
		}

		if (isset($this->request->get['search']) || isset($this->request->get['tag'])) {
			$url = '';

			if (isset($this->request->get['search'])) {
				$url .= '&search=' . $this->request->get['search'];
			}

			if (isset($this->request->get['tag'])) {
				$url .= '&tag=' . $this->request->get['tag'];
			}

			if (isset($this->request->get['description'])) {
				$url .= '&description=' . $this->request->get['description'];
			}

			if (isset($this->request->get['category_id'])) {
				$url .= '&category_id=' . $this->request->get['category_id'];
			}	

			if (isset($this->request->get['sub_category'])) {
				$url .= '&sub_category=' . $this->request->get['sub_category'];
			}

			if (isset($this->request->get['sort'])) {
				$url .= '&sort=' . $this->request->get['sort'];
			}	

			if (isset($this->request->get['order'])) {
				$url .= '&order=' . $this->request->get['order'];
			}

			if (isset($this->request->get['page'])) {
				$url .= '&page=' . $this->request->get['page'];
			}

			if (isset($this->request->get['limit'])) {
				$url .= '&limit=' . $this->request->get['limit'];
			}

			$this->data['breadcrumbs'][] = array(
				'text'      => $this->language->get('text_search'),
				'href'      => $this->url->link('product/search', $url),
				'separator' => $this->language->get('text_separator')
			); 	
		}

		if (isset($this->request->get['product_id'])) {
			$product_id = (int)$this->request->get['product_id'];
		} else {
			$product_id = 0;
		}

		$this->load->model('catalog/product');

		$product_info = $this->model_catalog_product->getProduct($product_id);

		if ($product_info) {

        if(!isset($category_info)) {
          $categories = $this->model_catalog_product->getCategoriesByProductId($this->request->get['product_id']);
          if($categories) {
            foreach($categories as $category){
              $path = $this->getPath($category['category_id']);
              $category_info = $this->model_catalog_category->getCategory($category['category_id']);
              if($path){
                $cat_path = $path;
              }else{
                $cat_path = $category_info['category_id'];
              }

              if($category_info) {
                $path = '';
                foreach (explode('_', $cat_path) as $path_id) {
                  if (!$path) {
                    $path = $path_id;
                  } else {
                    $path .= '_' . $path_id;
                  }

                  $category_info = $this->model_catalog_category->getCategory($path_id);

                  if ($category_info) {
                    $this->data['breadcrumbs'][] = array(
                      'text'      => $category_info['name'],
                      'href'      => $this->url->link('product/category', '&path=' . $path),
                      'separator' => $this->language->get('text_separator')
                    );
                  }
                }
                break;
              }

            }
          }
        }

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 if($this->isVisitorMobile()) {
             $this->language->load('omf/common');
          }

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category_breadcrumb.xml

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$category_info = $this->model_catalog_category->getCategory($parent_id);

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PHP Notice:  Undefined index: category_id in /home/khaleeji/public_html/vqmod/vqcache/vq2-catalog_controller_product_product.php on line 188

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public function getCategoriesByProductId($product_id) {
          $query = $this->db->query("SELECT * FROM " . DB_PREFIX . "product_to_category ptc LEFT JOIN " . DB_PREFIX . "category c ON (ptc.category_id = c.category_id) WHERE ptc.product_id = '" . (int)$product_id . "' AND c.status = '1'");

          return $query->rows;
        }