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Operator Trouble In PHP function

(7 posts)

Started 1 year ago by soupking
Latest reply from soupking
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soupking
Member
Hi everybody,

I've got one PHP function that works and one that doesn't.

I found this function of a previous forum thread:

http://themeshaper.com/forums/topic/how-to-remove-nav-above-help-me
```
/* remove above navigation */
function remove_nav_above(){
	remove_action('thematic_navigation_above', 'thematic_nav_above', 2);
}
add_action('init','remove_nav_above');
```
I tested it and it worked. However, when I apply a condition to it the function doesn't respond:
```
/* remove above navigation for HOME ONLY*/
function remove_nav_above(){
    if (is_home()) {
        remove_action('thematic_navigation_above', 'thematic_nav_above', 2);
    }
}
add_action('init','remove_nav_above');
```
In another forum somebody suggested putting...
```
wp_reset_query();
```
in between two similar queries for some kind of cancellation purpose I believe it was. ?

However, I put that before it as well, and nothing happened. Is there a basic syntax that I am forgetting to put in? I tried using "is_home" with another function the same way and it responded fine. The only difference was there was HTML tagging in the function.

Not sure why it's not responding. ?
Posted 1 year ago #
helgatheviking
Moderator

i've run into this before. i think the problem is that the init hook is too early for WP to know whether you really are on the home page or not. so is_home() always returns false (and every other conditional test too)... and your function flops mightily.

when i run into this, i usually pick a slightly later hook like template_redirect

function remove_nav_above(){
if (is_home()) {
remove_action('thematic_navigation_above', 'thematic_nav_above', 2);
}
}
add_action('template_redirect','remove_nav_above');

Posted 1 year ago #
soupking
Member

Awesome. Nailed it. That was the problem.

It's not listed in these maps as far as I can tell:

http://www.bluemandala.com/thematic/thematic-structure.html
http://visualizing.thematic4you.com/

So where is 'init' and 'template_redirect' in the scheme of all of this? Is that kind of a basis of child theme or not?

I would have no idea to guess something like 'template redirect'. No way without forum response. Thanks again. :)

Posted 1 year ago #
helgatheviking
Moderator

hate to send you back to the codex, but there ya go:

http://codex.wordpress.org/Plugin_API/Action_Reference

init is not a thematic hook. it is a wordpress hook. but don't worry, i don't understand half of what is going on on this particular page.

Posted 1 year ago #
soupking
Member

Ahhh, cool. NP, happy to re-visit the Codex if I have half a clue where to put the basics.

I feel like I just graduated from white belt having the ability to control section of my site. Dead in the water without that.

Thanks!

Posted 1 year ago #
helgatheviking
Moderator

lol. welcome to the world of yellow belt, daniel-san. now that you can wax on and wax off, you must paint the fence.

Posted 1 year ago #
soupking
Member

Heh, I could use the exercise, believe me. (no, the avatar is no indication :)

Posted 1 year ago #

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