Codeigniter showing error: No database selected

Question

I am using Codeigniter's DBForge class to create a database and table within that database.

Here is code:

if ($this->dbforge->create_database('new_db')) {
     $fields = array(
         'blog_id' => array(
              'type' => 'INT',
              'constraint' => 5,
              'unsigned' => TRUE,
              'auto_increment' => TRUE
          ),
          'blog_title' => array(
              'type' => 'VARCHAR',
              'constraint' => '100',
          ),
          'blog_author' => array(
              'type' => 'VARCHAR',
              'constraint' => '100',
              'default' => 'King of Town',
          ),
          'blog_description' => array(
              'type' => 'TEXT',
              'null' => TRUE,
          ),
     );
     $this->dbforge->add_field($fields);
     $this->dbforge->add_key('blog_id', TRUE);
     $this->dbforge->create_table('blog', TRUE);
}

The above mentioned code is written inside index function of controller. When the following code is executed, it shows error as, No database selected. Does anyone have ant idea why it is happening. Any help is appreciated.

Answer 1

You need to specify

 $db['default']['database'] = "new_db"; 

in database.php