I am currently having a problem with my custom made plugin. It actually logs all the actions/filters fired to a file (or to screen). I need to update my options in the db somehow when submitting the form. Here's the code listing itself:

class WP_Test_Logging_Plugin {

//required for the file name
private $yymmddhhmmss;
private $data;

public function __construct() {
    add_action( 'all', array( $this, 'log_to' ) );
    add_action( 'admin_menu', array( $this, 'menu' ) );
    add_action( 'admin_print_styles', array( $this, 'plugin_theme_style' ) );
    add_action( 'template_redirect', array( $this, 'on_admin_form_submit' ) );
    $this->yymmddhhmmss = date( 'YMDHis' );
    if ( get_option( 'where_to_log_to' ) == false ) {
        update_option( 'where_to_log_to', 1 );
    $this->data = get_option( 'where_to_log_to' );

the method I use to process the form

public function on_admin_form_submit() {
    if ( isset( $_POST['selection'] ) ) {
        update_option( 'where_to_log_to', $_POST['selection'] );

Is there a way to go about it? Thanks!

  • @s_ha_dum, could you help me with this? – Alex Herrmann Sep 29 '13 at 22:35
  • @toscho , excuse me. I am just new to stackexchange. Trying to learn using it in an appropriate way. – Alex Herrmann Sep 29 '13 at 23:14

First, template_redirect is a front end hook. It never fires on your backend save. You need to choose a backend hook such as admin_init to hook your function.

Secondly, based on your pastebin from you other question, your code has the checked attribute hard-coded for both of your radio boxes, thus causing it to default to the last one all the time. You are going to want to edit your form like so:

<input type="radio" <?php checked($this->data, 1); ?> value="1" name="selection" >

Third, you need to make sure that both of your radio buttons have a value attribute.

Fourth, you need to update the option when you save so...

public function on_admin_form_submit() {
    if ( isset( $_POST['selection'] ) ) {
      if ($_POST['selection'] == 1){
        update_option( 'where_to_log_to', 1 );
      } else {
        update_option( 'where_to_log_to', 2 );
    $this->data = get_option( 'where_to_log_to', 1 );

Notice that I explicitly saved the values 1 and 2.

I think that's got it.

| improve this answer | |
  • ok. i will test it in a moment. could you tell me if it is allowed to share contact details in the comments? i just could send you my zip package. – Alex Herrmann Sep 29 '13 at 22:58
  • tested. it is still not changing my option. – Alex Herrmann Sep 29 '13 at 23:02
  • In a comment to my answer on your other question you stated "But I seen to run into the same trouble with endless loop." Is that not correct? Do you have an infinite loop or not? – s_ha_dum Sep 29 '13 at 23:36
  • Actually, nope. I'm testing the plugin and there's no infinite loop. I still wonder why it doesn't change my option in the database. It definitely changes the option if i state in in the __constructor(). But nowhere else. – Alex Herrmann Sep 30 '13 at 0:14
  • @AlexHerrmann : see the edit – s_ha_dum Sep 30 '13 at 0:57

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