如何在OpenCart中创建自定义SEO友好的URL？

事实证明，这可以通过对单个文件进行相对简单的更改来完成。没有.htaccess重写规则，只需修补目录/控制器/通用/seo_url.php文件，并将漂亮的URL添加到现有的数据库表中。

要seo_url.php的修补程序：

Index: catalog/controller/common/seo_url.php
===================================================================
--- catalog/controller/common/seo_url.php   (old)
+++ catalog/controller/common/seo_url.php   (new)
@@ -48,7 +42,12 @@
                $this->request->get['route'] = 'product/manufacturer/product';
            } elseif (isset($this->request->get['information_id'])) {
                $this->request->get['route'] = 'information/information';
-           }
+           } else {
+                $query = $this->db->query("SELECT * FROM " . DB_PREFIX . "url_alias WHERE keyword = '" . $this->db->escape($this->request->get['_route_']) . "'");
+                if ($query->num_rows) {
+                    $this->request->get['route'] = $query->row['query'];
+                }
+           }

            if (isset($this->request->get['route'])) {
                return $this->forward($this->request->get['route']);
@@ -88,7 +87,15 @@
                        }

                        unset($data[$key]);
-                   }
+                   } else {
+                        $query = $this->db->query("SELECT * FROM " . DB_PREFIX . "url_alias WHERE `query` = '" . $this->db->escape($data['route']) . "'");
+
+                        if ($query->num_rows) {
+                            $url .= '/' . $query->row['keyword'];
+
+                            unset($data[$key]);
+                        }
+                   }
                }
            }

需要进行两次编辑。第一个扩展函数以在表中查找任何关键字匹配。index()url_alias$this->request->get['_route_']

第二个扩展了该函数，以在表中查找所有路由，而不仅仅是产品、制造商和信息页面的路由。rewrite()url_alias

向数据库添加条目：

INSERT INTO `url_alias` (`url_alias_id`, `query`, `keyword`) VALUES
(NULL, 'checkout/cart', 'cart');

就是这样。http://example.com/cart 应该返回与 http://example.com/index.php?route=checkout/cart 相同的内容，OpenCart应该识别并返回指向漂亮URL的链接 http://example.com/cart$this->url->link('checkout/cart');

我使用的是Opencart版本1.5.5.1，这是适合我的确切代码：

<?php 
class ControllerCommonSeoUrl extends Controller {
    /* SEO Custom URL */
    private $url_list = array (
        'common/home'       => '',
        'checkout/cart'     => 'cart',
        'account/register'  => 'register',
                    'account/wishlist'  => 'wishlist',
                    'checkout/checkout' => 'checkout',
                    'account/login'     => 'login',
                    'product/special'   => 'special',
                    'affiliate/account' => 'affiliate',
                    'checkout/voucher'  => 'voucher',
                    'product/manufacturer' => 'brand',
                    'account/newsletter'   => 'newsletter',
                    'account/order'        => 'order',
                    'account/account'      => 'account',
                    'information/contact'  => 'contact',
                    'account/return/insert' => 'return',
                    'information/sitemap'   => 'sitemap',
        );
    /* SEO Custom URL */

public function index() {
    // Add rewrite to url class
    if ($this->config->get('config_seo_url')) {
        $this->url->addRewrite($this);
    }

    // Decode URL
    if (isset($this->request->get['_route_'])) {
        $parts = explode('/', $this->request->get['_route_']);

        foreach ($parts as $part) {
            $query = $this->db->query("SELECT * FROM " . DB_PREFIX . "url_alias WHERE keyword = '" . $this->db->escape($part) . "'");

            if ($query->num_rows) {
                $url = explode('=', $query->row['query']);

                if ($url[0] == 'product_id') {
                    $this->request->get['product_id'] = $url[1];
                }

                if ($url[0] == 'category_id') {
                    if (!isset($this->request->get['path'])) {
                        $this->request->get['path'] = $url[1];
                    } else {
                        $this->request->get['path'] .= '_' . $url[1];
                    }
                }   

                if ($url[0] == 'manufacturer_id') {
                    $this->request->get['manufacturer_id'] = $url[1];
                }

                if ($url[0] == 'information_id') {
                    $this->request->get['information_id'] = $url[1];
                }   
            } else {
                $this->request->get['route'] = 'error/not_found';   
            }
        }
                    /* SEO Custom URL */
                    if ( $_s = $this->setURL($this->request->get['_route_']) ) {
                            $this->request->get['route'] = $_s;
                    }/* SEO Custom URL */

        if (isset($this->request->get['product_id'])) {
            $this->request->get['route'] = 'product/product';
        } elseif (isset($this->request->get['path'])) {
            $this->request->get['route'] = 'product/category';
        } elseif (isset($this->request->get['manufacturer_id'])) {
            $this->request->get['route'] = 'product/manufacturer/info';
        } elseif (isset($this->request->get['information_id'])) {
            $this->request->get['route'] = 'information/information';
        }

        if (isset($this->request->get['route'])) {
            return $this->forward($this->request->get['route']);
        }
    }
}

public function rewrite($link) {
    $url_info = parse_url(str_replace('&amp;', '&', $link));

    $url = ''; 

    $data = array();

    parse_str($url_info['query'], $data);

    foreach ($data as $key => $value) {
        if (isset($data['route'])) {
            if (($data['route'] == 'product/product' && $key == 'product_id') || (($data['route'] == 'product/manufacturer/info' || $data['route'] == 'product/product') && $key == 'manufacturer_id') || ($data['route'] == 'information/information' && $key == 'information_id')) {
                $query = $this->db->query("SELECT * FROM " . DB_PREFIX . "url_alias WHERE `query` = '" . $this->db->escape($key . '=' . (int)$value) . "'");

                if ($query->num_rows) {
                    $url .= '/' . $query->row['keyword'];

                    unset($data[$key]);
                }                   
            } elseif ($key == 'path') {
                $categories = explode('_', $value);

                foreach ($categories as $category) {
                    $query = $this->db->query("SELECT * FROM " . DB_PREFIX . "url_alias WHERE `query` = 'category_id=" . (int)$category . "'");

                    if ($query->num_rows) {
                        $url .= '/' . $query->row['keyword'];
                    }                           
                }

                unset($data[$key]);
            }
                                    /* SEO Custom URL */
                                    if( $_u = $this->getURL($data['route']) ){
                                        $url .= $_u;
                                        unset($data[$key]);
                                    }/* SEO Custom URL */       


        }
    }

    if ($url) {
        unset($data['route']);

        $query = '';

        if ($data) {
            foreach ($data as $key => $value) {
                $query .= '&' . $key . '=' . $value;
            }

            if ($query) {
                $query = '?' . trim($query, '&');
            }
        }

        return $url_info['scheme'] . '://' . $url_info['host'] . (isset($url_info['port']) ? ':' . $url_info['port'] : '') . str_replace('/index.php', '', $url_info['path']) . $url . $query;
    } else {
        return $link;
    }
}   
    /* SEO Custom URL */
    public function getURL($route) {
            if( count($this->url_list) > 0) {
                 foreach ($this->url_list as $key => $value) {
                    if($route == $key) {
                        return '/'.$value;
                    }
                 }
            }
            return false;
    }
    public function setURL($_route) {
            if( count($this->url_list) > 0 ){
                 foreach ($this->url_list as $key => $value) {
                    if($_route == $value) {
                        return $key;
                    }
                 }
            }
            return false;
    }/* SEO Custom URL */
}
?>