Php 在CodeIgniter中加载多个数据库
我试图建立一个网站使用codeigniter,我将使用两个数据库 然而,我似乎有一个问题,使他们的工作 我得到的错误是Php 在CodeIgniter中加载多个数据库,php,mysql,codeigniter,Php,Mysql,Codeigniter,我试图建立一个网站使用codeigniter,我将使用两个数据库 然而,我似乎有一个问题,使他们的工作 我得到的错误是 A PHP Error was encountered Severity: Notice Message: Undefined variable: cms_db Filename: models/site_model.php 致命错误:对非对象调用成员函数select() 这是我的密码 控制器(site.php) 这就是我回应他们的方式 <?php echo $l
A PHP Error was encountered
Severity: Notice
Message: Undefined variable: cms_db
Filename: models/site_model.php
致命错误:对非对象调用成员函数select()
这是我的密码
控制器(site.php)
这就是我回应他们的方式
<?php echo $learnfn->name; ?>
我错过什么了吗
感谢您的帮助首先,在配置文件中,您必须仅定义一个活动组,活动记录为true,而不是两者都为true,并且在控制器上加载$cms_db,如果您的活动组为默认组,则可以按以下方式执行
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Site extends CI_controller {
public function __construct()
{
parent::__construct();
// Your own constructor code
$this->load->model("site_model");
$this->site_model->cms_db = $this->load->database('cms', TRUE);
}
}
如果您希望$cms_db始终创建MY_模型并将其放入构造函数加载数据库,并使用MY_模型扩展您的所有模型请检查是否尝试了此操作,但仍会出现相同的错误。我通过重复行$cms\u db=$this->load->database('cms',TRUE)修复了它;我的站点模型中的每个函数中都有另一个函数,但这种方法似乎太单调乏味了。另外,感谢您的回复检查编辑版MY_Model无需在每个月重复您可以调用$this->cms_db->select('*')->get_where('yourtable')->result();尝试在MY_模型中添加行,出现此错误严重性:注意消息:未定义属性:Site:$Site_Model文件名:core/Model.php以及遇到php错误严重性:注意消息:间接修改重载属性Site_Model:$Site_Model无效文件名:models/Site_Model.phpy必须将MY_模型放在application/core目录中,并以正常方式扩展您的模型
//CMS
$active_group = 'cms';
$active_record = TRUE;
$db['cms']['hostname'] = 'localhost';
$db['cms']['username'] = 'root';
$db['cms']['password'] = '';
$db['cms']['database'] = 'db2';
$db['cms']['dbdriver'] = 'mysql';
$db['cms']['dbprefix'] = '';
$db['cms']['pconnect'] = TRUE;
$db['cms']['db_debug'] = TRUE;
$db['cms']['cache_on'] = FALSE;
$db['cms']['cachedir'] = '';
$db['cms']['char_set'] = 'utf8';
$db['cms']['dbcollat'] = 'utf8_general_ci';
$db['cms']['swap_pre'] = '';
$db['cms']['autoinit'] = TRUE;
$db['cms']['stricton'] = FALSE;
//SITE
$active_group = 'default';
$active_record = TRUE;
$db['default']['hostname'] = 'localhost';
$db['default']['username'] = 'root';
$db['default']['password'] = '';
$db['default']['database'] = 'db1';
$db['default']['dbdriver'] = 'mysql';
$db['default']['dbprefix'] = '';
$db['default']['pconnect'] = TRUE;
$db['default']['db_debug'] = TRUE;
$db['default']['cache_on'] = FALSE;
$db['default']['cachedir'] = '';
$db['default']['char_set'] = 'utf8';
$db['default']['dbcollat'] = 'utf8_general_ci';
$db['default']['swap_pre'] = '';
$db['default']['autoinit'] = TRUE;
$db['default']['stricton'] = FALSE;
<?php echo $learnfn->name; ?>
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Site extends CI_controller {
public function __construct()
{
parent::__construct();
// Your own constructor code
$this->load->model("site_model");
$this->site_model->cms_db = $this->load->database('cms', TRUE);
}
}
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Site_model extends MY_Model
{
public $cms_db;
//other option if you are not passing through controller
// this will always load cms_db
function __ construct(){
parent::__construct();
}
function get_cp()
{
return $this->db->select()->from("listings")->where("list_UID","2")->get();
}
function get_op()
{
return $this->db->select()->from("listings",0,4)->where("list_UID","1")->get();
}
function get_learnfn()
{
return $this->cms_db->select()->from("education")->get()->row();
}
}
// CI 2.0 Compatibility
if(!class_exists('CI_Model')) { class CI_Model extends Model {} }
class MY_Model extend CI_Model{
public $cms_db = null;
function __construct(){
$this->site_model->cms_db = $this->load->database('cms', TRUE);
}
}