Serializing in config form?

[Guest]

Hi, I have a module with its config form in a .tpl file (so, no Helper class). I need to serialize values and the AJAX picks them up correctly (the Save button is bound to an AJAX request), but then they are not saved in the DB at all.

These are the tags as they appear in the .tpl:

<textarea class="form-control" name="product_analysis[]">My first text</textarea>

<textarea class="form-control" name="product_analysis[]">My second text</textarea>

The product_analysis field is currently set like this:

array('type' => self::TYPE_STRING, 'shop' => true, 'validate' => 'isString')

Can you help me out please?

Thank you!

Edited April 20, 2018 by Guest (see edit history)