【phpcms-v9】phpcms-v9二次開發(fā)所必須知道的步驟

2024-09-10 07:15:59

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一、做phpcms-v9二次開發(fā)時,我們經(jīng)常需要用到如下代碼,所以有必須在這里注釋說明一下:

defined('IN_PHPCMS') or exit('No permission resources.');

//第一步：獲取模型緩存路徑

define('CACHE_MODEL_PATH',CACHE_PATH.'caches_model'.DIRECTORY_SEPARATOR.'caches_data'.DIRECTORY_SEPARATOR);



pc_base::load_app_func('util','content');

class index {

    private $db;

    function __construct() {

        //第二步：獲取與數(shù)據(jù)庫相關的配置信息，如：數(shù)據(jù)表前綴、數(shù)據(jù)庫名、數(shù)據(jù)庫用戶名、數(shù)據(jù)庫密碼、數(shù)據(jù)庫編碼、數(shù)據(jù)庫類型

        $this->db = pc_base::load_model('content_model');



        $this->_userid = param::get_cookie('_userid');

        $this->_username = param::get_cookie('_username');

        $this->_groupid = param::get_cookie('_groupid');

    }

    //首頁

    public function init() {

        if(isset($_GET['siteid'])) {

            $siteid = intval($_GET['siteid']);

        } else {

            $siteid = 1;//模型情況下siteid為1

        }

        $siteid = $GLOBALS['siteid'] = max($siteid,1);

        define('SITEID', $siteid);

        $_userid = $this->_userid;

        $_username = $this->_username;

        $_groupid = $this->_groupid;

        //SEO

        $SEO = seo($siteid);

        $sitelist  = getcache('sitelist','commons');

        $default_style = $sitelist[$siteid]['default_style'];

        $CATEGORYS = getcache('category_content_'.$siteid,'commons');

        include template('content','index',$default_style);

    }

    //內(nèi)容頁

    public function show() {

        $catid = intval($_GET['catid']);

        $id = intval($_GET['id']);



        if(!$catid || !$id) showmessage(L('information_does_not_exist'),'blank');

        $_userid = $this->_userid;

        $_username = $this->_username;

        $_groupid = $this->_groupid;



        $page = intval($_GET['page']);

        $page = max($page,1);



        $siteids = getcache('category_content','commons');//獲取各欄目所對應的站點id



        $siteid = $siteids[$catid];//獲取當前欄目所對應的站點id



        $CATEGORYS = getcache('category_content_'.$siteid,'commons');//獲取當前站點下所有欄目的配置信息



        if(!isset($CATEGORYS[$catid]) || $CATEGORYS[$catid]['type']!=0) showmessage(L('information_does_not_exist'),'blank');



        $this->category = $CAT = $CATEGORYS[$catid];//獲取當前站點下當前欄目的配置信息



        $this->category_setting = $CAT['setting'] = string2array($this->category['setting']);



        $siteid = $GLOBALS['siteid'] = $CAT['siteid'];//獲取當前站點下當前欄目所對應的站點id值



        $MODEL = getcache('model','commons');//獲取各個模型的配置信息



        $modelid = $CAT['modelid'];//獲取當前站點下當前欄目所屬的模型id，找到了模型，也就找到了要查詢的模型表（數(shù)據(jù)表）



        //設置模型表：通過緩存文件獲取modelid，然后再通過模型modelid獲取對應的模型表及對應的模型附表

        $tablename = $this->db->table_name = $this->db->db_tablepre.$MODEL[$modelid]['tablename'];



        //設置模型附表

        $r = $this->db->get_one(array('id'=>$id));



        if(!$r || $r['status'] != 99) showmessage(L('info_does_not_exists'),'blank');



        //下面代碼獲取的是當前模型附表中數(shù)據(jù)

        $this->db->table_name = $tablename.'_data';



        //下面代碼獲取的是當前模型附表中數(shù)據(jù)

        $r2 = $this->db->get_one(array('id'=>$id));



        //將模型表數(shù)據(jù)和模型附表中數(shù)據(jù)合并在一起

        $rs = $r2 ? array_merge($r,$r2) : $r;



        //再次重新賦值，以數(shù)據(jù)庫為準

        $catid = $CATEGORYS[$r['catid']]['catid'];

        $modelid = $CATEGORYS[$catid]['modelid'];



        require_once CACHE_MODEL_PATH.'content_output.class.php';

        $content_output = new content_output($modelid,$catid,$CATEGORYS);    //開源軟件:Vevb.com



        //將查詢出來的數(shù)據(jù)經(jīng)模型處理函數(shù)處理后放入$data數(shù)據(jù)中

        $data = $content_output->get($rs);



        //注意：這行代碼非常之重要，主要用來將數(shù)組中各個元素轉(zhuǎn)化為變量，數(shù)據(jù)元素的鍵名為變量名，數(shù)據(jù)元素的值為變量值

        extract($data);