Reading CodeIgniter config values from database in

问题:

As you might know, when you create a new project with CI you'll have to manually enter base url, encryption key in config/config.php. I'm trying to overcome this and is hence looking for a way to read those values from a database instead - making the installation for a customer and the set up time as a whole decrease a lot.

A customer isn't able to edit a PHP file's variables, but is most likely able to, with some guidance, enter base url and have a encryption key automatically filled in by the system.

Is there any way to accomplish this?

回答1:

Of course! Add a hook - post_controller and set these config values through that file.

config/hooks.php

$hook['pre_controller'][] = array(  'class'    => 'MyOtherClass',
                                    'function' => 'MyOtherfunction',
                                    'filename' => 'Myotherclass.php',
                                    'filepath' => 'hooks');

hooks/myotherclass.php

<?

class MyOtherClass {

    function MyOtherfunction() {

        $CI =& get_instance();

        $row = $CI->db->get_where('configs', array('site_id' => 1))->row();

        $CI->config->set_item('base_url', $row->base_url);

    }

}

Basicly you set these values before they're used in any controller or similiar.

回答2:

As far Codeigniter 3.1.7 pre_controller won't work because it will return NULL value while initializing $CI =& get_instance();

To solve this:

Change the hook point from pre_controller to post_controller_constructor

Modified source:

config/hooks.php

$hook['post_controller_constructor'][] = array(  'class'    => 'MyOtherClass',
                                'function' => 'MyOtherfunction',
                                'filename' => 'Myotherclass.php',
                                'filepath' => 'hooks');

and in hooks/myotherclass.php

<?

class MyOtherClass {

    function MyOtherfunction() {

        $CI =& get_instance();

        $row = $CI->db->get_where('configs', array('site_id' => 1))->row();

        $CI->config->set_item('base_url', $row->base_url);

    }

}

Now it will work!

回答3:

 class name extends CI_Controller {
    public $DB1;
    public $MSSQL;
    public function __construct()
     {
    parent::__construct();
        $userid = $this->session->userdata('userids');
          $this->load->model('kubix');
          $result = $this->kubix->databaseconncetion($userid);
        foreach ($result as $deta)
          {

      $this->MSSQL=$db['MSSQL'] = array(
      'hostname' => $deta["Db_base_ip"],
      'username' => $deta["Db_username"],
      'password' => $deta["db_password"],
      'database' => $deta["Db_base_name"],
      'dbdriver' => 'sqlsrv',
      'dbprefix' => '',
      'pconnect' => FALSE,
      'db_debug' => (ENVIRONMENT !== 'production'),
      'cache_on' => FALSE,
      'cachedir' => '',
      'char_set' => 'utf8',
      'dbcollat' => 'utf8_general_ci',
      'swap_pre' => '',
      'encrypt' => FALSE,
      'compress' => FALSE,
      'stricton' => FALSE,
      'failover' => array(),
      'save_queries' => TRUE);
      $this->DB1 = $this->load->database($this->MSSQL, TRUE);
    $sql = "SELECT  TOP 1 * FROM AccountsFinancialYearMaster where Active=1 ";
        $query = $this->DB1->query( $sql);
        $result= $query->result_array();
RETURN $result;