多个数据库用户用于多个数据库连接

时间:2012-10-19 08:40:45

标签: php mysql codeigniter database-connection

我在我的CI应用程序上使用了两个不同的数据库。

我在mysql上创建了2个用户,并将user1授予db1所有权限,然后将user2授予db2与SQLpro客户端的所有权限。

database.php:

$active_group = 'default';
$active_record = TRUE;   

$db['default']['hostname'] = 'localhost';
$db['default']['username'] = '***1';
$db['default']['password'] = '***1';
$db['default']['database'] = 'ci_users';
$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_unicode_ci';
$db['default']['swap_pre'] = '';
$db['default']['autoinit'] = TRUE;
$db['default']['stricton'] = FALSE;

$db['keys']['hostname'] = 'localhost';
$db['keys']['username'] = '***2';
$db['keys']['password'] = '***2';
$db['keys']['database'] = 'ci_keys';
$db['keys']['dbdriver'] = 'mysql';
$db['keys']['dbprefix'] = '';
$db['keys']['pconnect'] = TRUE;
$db['keys']['db_debug'] = TRUE;
$db['keys']['cache_on'] = FALSE;
$db['keys']['cachedir'] = '';
$db['keys']['char_set'] = 'utf8';
$db['keys']['dbcollat'] = 'utf8_unicode_ci';
$db['keys']['swap_pre'] = '';
$db['keys']['autoinit'] = TRUE;
$db['keys']['stricton'] = FALSE;

模特:

<?php

if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class Model_Users extends CI_Model {
    function Model_Users()
    {
        // Call the Model constructor
        parent::__construct();
        $this->load->database('default',true);
    }
etc...


<?php

if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class Model_Keys extends CI_Model {
    function Model_Keys()
    {
        // Call the Model constructor
        parent::__construct();
        $this->load->database('keys',true);
    }
etc...

因此,当在同一个控制器/方法中使用两个模型时,model_users工作得很好但是model_keys返回一个错误,因为它似乎无论如何加载了model_users db1而不是db2:

  

无法修改标头信息 - 已经发送的标头(输出从/Applications/XAMPP/xamppfiles/htdocs/app/application/models/model_keys.php:2开始)   文件名:core / Common.php
  行号:442

     

发生数据库错误
  错误号码:1146
  表'ci_users.ci_keys'不存在//这应该是ci_keys.ci_keys

有人有想法吗?

我在model_keys中编辑了代码:

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class Model_Keys extends CI_Model {

    function Model_Keys()
    {
        // Call the Model constructor
        parent::__construct();
        $this->db_keys = $this->load->database('keys',true);
    } 

现在db工作但我在模型上收到会话错误:

  

消息:无法修改标头信息 - 已经发送的标头(输出从/Applications/XAMPP/xamppfiles/htdocs/site/application/models/model_keys.php:2开始)

在控制器中我这样做:

$this->load->model('model_users');
$this->model_users->insert(bla bla);

$this->load->model('model_keys');
$this->model_keys->insert(bla bla);

$this->session->set_userdata(array(bl bla);

redirect(some url);

1 个答案:

答案 0 :(得分:3)

下面是问题

$this->load->database('keys',true);

如果您传递第二个参数TRUE,那么它将返回数据库对象,它将无法与ActiveRecord一起使用。

这是示例

$DB1 = $this->load->database('group_one', TRUE);

//Then you can't below function
$this->db->query();

You will instead use:

$DB1->query();