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1. gplaurin
   Member
   Posted 3 years ago #

   Hi,
   This is my first post, hurray !

   I've created a plugin that is displayed when you create or edit a page.
   It let the user select from a multiple select the packages he want to be displayed in is new page.

   But when I tried to save these infos, I can't retrieve the data from the select. I've got some other textbox and I can save them but nothing comes form my multiple select.

   Here is my select:
   <select name="includedpackage[]" id="includedpackage" style="width:80%;height:100px; float:left;" multiple="multiple"></select>

   And retrieve it with:
   $packages = $_POST['includedpackage'];

   Thanks a lot !
   GP

2. mores
   Member
   Posted 3 years ago #

   I'm not sure I understand.
   Your plugin gives the user some options, right?
   Where are they displayed? Like in a box on the side?

   Normally you then save these as post options, like
   update_option('packages',$packages);
   To set an initial set of options, you do this
   add_option('packages','value_of_packages','available options','yes');

   To retrieve use
   $packages = get_option('packages')

   I suggest you check out simple plugins to see how they work.

3. gplaurin
   Member
   Posted 3 years ago #

   Hi !
   Using the add_meta_box('forfait','Forfaits','forfaits_meta','page'); I have put a box under the editor, in this box i have a multiple select. The user can add some package into the multiple select by entering the package name into a textbox and clicking add, then the text is add to the multiple select.

   But when I save my page using add_action('wp_insert_post', 'my_function'); and then in the function my_function I tried to retrieve my multiple select (includedpackage) with:
   $packages = $_POST['includedpackage'];
   $packages is empty

   BUT I FIND THE SOLUTION !
   It was easy, when I was saving my page, there was none item selected in my multiple select so nothing was post !

   Thanks
   GP

4. mores
   Member
   Posted 3 years ago #

   In that case you should first check if there is anything selected:
   

   if (isset($_POST['includedpackage'])) {
    ...
   }

   ... No wait, that's how I check if a button was pressed :)
   Uhm, then use this:
   

   if ($includedpackage) {
   ...
   }

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