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I am trying to insert some datas into database table on form submit like this:

function form_example_submit($form, &$form_state) {
    
    if ($form_state['values']['select']=='1') $gender = 'male';
    else $gender = 'female';
    
    db_insert('form_pokus_table')->fields(array(
      'name'    => $form_state['values']['name'],
      'gender'  => $gender,
      'message' => $form_state['values']['message'],      
      
    ))->execute();
    
    drupal_set_message("Message is successfully saved"); 
    
    return $form;

}

My schema in .install file looks like this:

function form_example_schema() {
    
    $schema['form_example_table'] = array(
        'description' => 'Table for form_pokus module',
        'fields' => array(
            'id'        => array('type' => 'serial', 'unsigned' => TRUE, 'not null' => TRUE),
            'name'      => array('type' => 'varchar','length' => 30,     'not null' => TRUE, 'default' => ''),
            'gender'    => array('type' => 'varchar','length' => 30,     'not null' => TRUE, 'default' => ''),
            'message'   => array('type' => 'text', 'not null' => TRUE,   'default'  => ''),
            'status'    => array('type' => 'text', 'not null' => FALSE ),
            'created'   => array('type' => 'int',  'not null' => TRUE,   'default'  => 0),          
        ),
        
        'primary key' => array('id'),
     
    );
    
    return $schema;
}

But nothing happens on form submit, only page is reloaded. What I am mising?

I am trying to insert some datas into database table on form submit like this:

function form_example_submit($form, &$form_state) {
    
    if ($form_state['values']['select']=='1') $gender = 'male';
    else $gender = 'female';
    
    db_insert('form_example_table')->fields(array(
      'name'    => $form_state['values']['name'],
      'gender'  => $gender,
      'message' => $form_state['values']['message'],      
      
    ))->execute();
    
    drupal_set_message("Message is successfully saved"); 
    
    return $form;

}

My schema in .install file looks like this:

function form_example_schema() {
    
    $schema['form_example_table'] = array(
        'description' => 'Table for form_pokus module',
        'fields' => array(
            'id'        => array('type' => 'serial', 'unsigned' => TRUE, 'not null' => TRUE),
            'name'      => array('type' => 'varchar','length' => 30,     'not null' => TRUE, 'default' => ''),
            'gender'    => array('type' => 'varchar','length' => 30,     'not null' => TRUE, 'default' => ''),
            'message'   => array('type' => 'text', 'not null' => TRUE,   'default'  => ''),
            'status'    => array('type' => 'text', 'not null' => FALSE ),
            'created'   => array('type' => 'int',  'not null' => TRUE,   'default'  => 0),          
        ),
        
        'primary key' => array('id'),
     
    );
    
    return $schema;
}

But nothing happens on form submit, only page is reloaded. What I am mising?