taxonomy and term function

I believe you need to use term_exists() instead of taxonomy_exists().

Thanks for your reply vtxyzzy, I found this out 5 minutes ago, but
with my code, it still ignores my ID of child-taxonomy (18 and $gulv )
‘
if ( term_exists( 18, $taxonomyname ) )
return $stylesheet_dir_uri .’/grunn.css’;

elseif ( term_exists( $gulv, $taxonomyname ) )
return $stylesheet_dir_uri .’/gulv.css’;

else
return $stylesheet_dir_uri . ‘/style.css’; // our default stylesheet
‘

Please explain what you mean by ‘child-taxonomy’ and what are the values of $taxonomyname and $gulv?

Child-taxonomy is my subcategory of my custom taxonomy

‘$taxonomyname = “product_categories”; // the custom_taxonomy
$gulv = “15”; // the id of product_categories gulv (child)
$grunn = “18”;’ // the id of product_categories grunn (child)

WordPress still ignores and reads only the taxonomy, and not the ID i want to be found.

I am still a little confused. Is child-taxonomy a term of a taxonomy?

Yes, I’m sorry I am also confused, hehe. I’m not a coder at all.

I got custom taxonomy = product_categories
In product_categories i have child/subcategory/terms: gulv & grunn

on my product page when viewing category “gulv” and its products I want it to load gulv.css, and then “grunn” to load grunn.css

I get the css to load, but only for existing within product_categories, and not the “gulv” og “grunn” category

I’ve fiddled some more and got this code now

<?php
$taxonomyname = "product_categories";
...
    if ( term_exists( 'grunn' ) )
    	return $stylesheet_dir_uri .'/grunn.css'; 

    elseif ( term_exists( 'gulv' ) )
    	return $stylesheet_dir_uri .'/gulv.css'; 

 	else
 		return $stylesheet_dir_uri . '/style.css'; // our default stylesheet

}
add_filter( 'stylesheet_uri', 'change_stylesheet_uri', 10, 2 );

?>

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It looks like the code you posted should work.

One point, variables declared outside a function are not available inside the function. You must either declare them global in the function, or pass them as parameters.

So $taxonomyname would not have a value inside the functions.

Yeah, I’ve removed my variable.

but unfortunately my code won’t work ??

function change_stylesheet_uri( $stylesheet_uri, $stylesheet_dir_uri ) {

    if (term_exists( 'grunnmur' ))
    	return $stylesheet_dir_uri .'/grunn.css'; 

    elseif (term_exists( 'gulv' ))
    	return $stylesheet_dir_uri .'/gulv.css'; 

 	else
 		return $stylesheet_dir_uri . '/style.css'; // our default stylesheet

}

The really weird part is that my url shows

/?taxonomy=product_categories&term=gulv

and still the css for term_exists( 'grunnmur' ) loads in the whole page. not just for the product category “Grunnmur” as it should.

Sorry, I misunderstood what you were trying to do.

The terms will always exist whether you are showing that term on the page or not. Try using the is_tax() function instead.

Whooopie! You saved my day vtxyzzy!

That worked flawlessly!

(argh, to many functions for a non-coder to handle in this WP codex)

Thanks a bunch, if you were close by I’d hug you!

I cheered to soon, the above works perfect for giving my product category different css. But I also have

?post_type=products

to be viewed inside each category. How would I go by to add these into my custom css function.

if (is_tax( 'product_categories', 'grunnmur' ))
    	return $stylesheet_dir_uri .'/grunn.css';
// add to also be true in post_type=products&p=ID-OF-PAGES

If you know how and got the time ??

Please post your current code.

function change_stylesheet_uri( $stylesheet_uri, $stylesheet_dir_uri ) {

    if (is_tax( 'product_categories', 'grunnmur' ))
    	return $stylesheet_dir_uri .'/grunn.css'; 

    elseif (is_tax( 'product_categories', 'gulv' ))
    	return $stylesheet_dir_uri .'/gulv.css'; 

	elseif (is_tax( 'product_categories', 'vegg' ))
   	return $stylesheet_dir_uri .'/vegg.css'; 

	elseif (is_tax( 'product_categories', 'tak' ))
    	return $stylesheet_dir_uri .'/tak.css'; 

 	else
 		return $stylesheet_dir_uri . '/style.css'; // our default stylesheet

}

I think you can use get_query_var():

elseif ( get_query_var('post_type') == 'products' )
   // Return the desired stylesheet;

So how do I go about to add this in addition to the code I already have?

I was originally hoping that the earlier (resolved) code would be added to the products aswell, since they are in the different categories of `
grunnmur, vegg and so on`