Comments on: Handling Plugins Options in WordPress 2.8 with register_setting()

By: Yasen Vasilev

Yasen Vasilev — Fri, 23 Dec 2011 15:46:50 +0000

Cool! But I think I’m doing something wrong. What if I don’t use wp_options, but my own table? What code should I use to get the possibility to write in that table from the settings page? I tried the global wpdb and SQL query in the settings page, but it crashes?

By: Smrth

Smrth — Tue, 25 Oct 2011 08:41:48 +0000

how would you validate if given is number between 1 and 600?

By: steve

steve — Sun, 23 Oct 2011 22:07:39 +0000

sorry you can ignore that.. the \n’s come from using error_log (if I just echo the individual array elements, there’s no carriage)..

is_int still doesn’t work, but is_numeric returns the correct answer so I’ll use that.

By: steve

steve — Sun, 23 Oct 2011 20:13:07 +0000

Ozh, I was wondering if you’d ever encounter this situation.
Simply, that in your admin settings page validation function, somehow there is a carriage return (slash and an N) tagged to the end of every value.

So when I test for an is_int, it never returns true.. because there’s actually a 2carriagereturn, not 2.

I did a error_log(print_r($input,true)) to see what was going on.

By: GB

GB — Tue, 04 Oct 2011 20:57:44 +0000

Thx – clear article.

I am using
and a hidden field with the name "page_options" – the 2.7 way for backwards compatibility.

And escaping my input values.

Any thoughts on a better way to do this and still keep 2.x compatibility?

By: Tim

Tim — Tue, 02 Aug 2011 20:18:50 +0000

This helped me a ton, since I got nowhere with the code from the wordpress.org documentation. Not sure what’s up with that, but thank you!

By: Juergen

Juergen — Mon, 13 Jun 2011 14:58:26 +0000

Hello, Nabha,
thanks for the hint.

By: Nabha

Nabha — Mon, 13 Jun 2011 13:55:35 +0000

Jurgen, you want to use add_settings_error() for that. (Just discovered it in Professional WordPress Plugin Development, in Chapter 7, in the section on the settings API.)

This page has a little documentation on it:
http://hitchhackerguide.com/2011/02/11/add_settings_error/

By: Jürgen

Jürgen — Wed, 27 Apr 2011 13:42:38 +0000

Hello,
thanks for your advice on this topic.
But there is still on question left:
How to I report the user about invalid input values?
It’s ok to use the sanitize function, but this will not give feedback on errors.
Or did I miss something?

By: Greg Turner

Greg Turner — Thu, 14 Apr 2011 03:47:13 +0000

Thank you very much for this article. Quick question about something. The register_settings and add_settings_xx calls are all made in a function that is attached to the admin_init hook. The codex says this hook “Runs at the beginning of every admin page before the page is rendered.” From this I conclude these calls are being made multiple times, whenever the admin page is rendered. Which does not make sense. Seems to me, these calls only need to be made once, perhaps in the register_activation_hook function. What am I missing? Thanks again.