{"id":1917,"date":"2013-07-20T10:56:35","date_gmt":"2013-07-20T10:56:35","guid":{"rendered":"http:\/\/webkul.com\/blog\/?p=1917"},"modified":"2013-08-19T20:29:36","modified_gmt":"2013-08-19T20:29:36","slug":"opencart-extend-core-classes","status":"publish","type":"post","link":"https:\/\/webkul.com\/blog\/opencart-extend-core-classes\/","title":{"rendered":"Opencart : Extend Core Classes"},"content":{"rendered":"<p><strong><a href=\"http:\/\/cdnblog.webkul.com\/blog\/wp-content\/uploads\/2013\/07\/factory.png\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-1918\" alt=\"factory\" src=\"http:\/\/cdnblog.webkul.com\/blog\/wp-content\/uploads\/2013\/07\/factory.png\" width=\"472\" height=\"280\" srcset=\"https:\/\/cdnblog.webkul.com\/blog\/wp-content\/uploads\/2013\/07\/factory.png 472w, https:\/\/cdnblog.webkul.com\/blog\/wp-content\/uploads\/2013\/07\/factory-300x177.png 300w\" sizes=\"(max-width: 472px) 100vw, 472px\" loading=\"lazy\" \/><\/a><\/strong><\/p>\n<p>&nbsp;<\/p>\n<p><strong>Opencart : Extend Core Classes using factory Design Pattern \u00a0&#8211;\u00a0<\/strong> if you are writing modules in opencart over riding of the classes are really pain in the ass . unlike magento opencart does not support <strong><a title=\"opencart class\" href=\"http:\/\/webkul.com\/blog\/use-observer-in-magento\/\">observers designer pattern<\/a>\u00a0<\/strong>so every time you need to replace opencart core files thats is really a bad module design practice . Fortunately there are two methods available for extending core classes<\/p>\n<p>1 &#8211; VQMOD<\/p>\n<p>2 &#8211; \u00a0Override Engine<\/p>\n<p>at <strong>webkul\u00a0<\/strong>we are using override engine and its fairly easy to use and no uses of xmls like in vqmod .<\/p>\n<p><strong>Example &#8211;\u00a0<\/strong>suppose that you want a custom sql query in your catalog model\u00a0catalog\/model\/account\/customer.php file like this<\/p>\n<pre class=\"brush:sql\">$this-&gt;db-&gt;query(\"UPDATE \" . DB_PREFIX . \"customer SET address_id = '\" . (int)$address_id . \"\r\n', newfield = 1 WHERE customer_id = '\" . (int)$customer_id . \"'\");<\/pre>\n<p>Then by using override engine it can easily achievable<\/p>\n<pre class=\"brush:php\">&lt;?php\r\nclass myaddon_ModelAccountCustomer extends ModelAccountCustomer {\r\n\r\n   public function addCustomer($data) {\r\n      parent::addCustomer($data);\r\n\r\n      \/\/ also add the newfield to the customer record\r\n      $sql  = \"UPDATE `\".DB_PREFIX.\"customer` SET newfield = '\".$data['newfield'].\"' \";\r\n      $sql .= \"WHERE email = '\".$data['email'].\"'\";\r\n      $this-&gt;db-&gt;query( $sql );\r\n   }\r\n}\r\n....\r\n?&gt;<\/pre>\n<p>and many more . enjoy the Php factory design pattern \ud83d\ude42<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; Opencart : Extend Core Classes using factory Design Pattern \u00a0&#8211;\u00a0 if you are writing modules in opencart over riding of the classes are really pain in the ass . unlike magento opencart does not support observers designer pattern\u00a0so every time you need to replace opencart core files thats is really a bad module design <a href=\"https:\/\/webkul.com\/blog\/opencart-extend-core-classes\/\">[&#8230;]<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[305],"tags":[343,344,345],"class_list":["post-1917","post","type-post","status-publish","format-standard","hentry","category-opencart","tag-opencart-extend-class","tag-opencart-factory-design","tag-opencart-override"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.5 - 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