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ThemeShaper Forums » Thematic

1. 

   sheep
   Member

   Hi, the title says it all. I would like to include a css style sheet to the header and some code to the footer when a custom field value exists.

   I've tried the following code ->

   for the css

   function add_css() { ?>
   
   <?php if ( get_post_meta($post->ID, 'fullbg', true) ) : ?>
   <link rel="stylesheet" type="text/css" href="<?php echo bloginfo('stylesheet_directory') ?>/thestylesheetiwant.css" />
   <?php endif; ?>
   
   <?php }
   add_action('wp_head', 'add_css');

   and for the footer

   function add_footer() { ?>
   
   <?php if ( get_post_meta($post->ID, 'fullbg', true) ) : ?>
   <img class="bg" src="<?php echo get_post_meta($post->ID, 'fullbg', true) ?>" alt="<?php the_title(); ?>" />
   <?php endif; ?>
   
   <?php }
   add_action('thematic_after', 'add_footer');

   but it's not working. help would be greatly appreciated

   Posted 1 year ago #
2. 

   helgatheviking
   Moderator

   are any parts showing up in the source code? also i'm not sure at ALL but does $post->ID work outside of a loop? the footer image part looks correct, so if that isn't getting inserted at all that will tell you that your IF condition is always returning false.... and that is probably b/c $post-ID has no value. try $postID = get_the_ID(); and then use $postID in its place.

   check out this article on how to conditionally switch stylesheets. you should be able to adapt it to your purpose.

   http://programming.thematic4you.com/2010/01/how-to-use-a-different-layout-for-a-certain-page/

   Posted 1 year ago #
3. 

   sheep
   Member

   No nothing shows up on the source code, and the tutorial on thematic4you did not work either. I am convinced that there is something wrong with the if statement. I am a php noob so I don't know how to fix it.

   the following works (is adds the style sheet if it's single)

   function add_css() { ?>
   
   <?php if ( is_single()) : ?>
   <link rel="stylesheet" type="text/css" href="<?php echo bloginfo('stylesheet_directory') ?>/thestylesheetiwant.css" />
   <?php endif; ?>
   
   <?php }
   add_action('wp_head', 'add_css');

   but the following does not
   

   function add_css() { ?>
   
   <?php if ( get_post_meta($post->ID, 'fullbg', true) ) : ?>
   <link rel="stylesheet" type="text/css" href="<?php echo bloginfo('stylesheet_directory') ?>/thestylesheetiwant.css" />
   <?php endif; ?>
   
   <?php }
   add_action('wp_head', 'add_css');

   does anyone know how to write an if statement that says

   if a value exists for the custom field "fullbg"

   Posted 1 year ago #
4. 

   helgatheviking
   Moderator

   did you try what i mentioned about get_the_ID() ?

   Posted 1 year ago #
5. 

   sheep
   Member

   I don't know what get_the_ID is, but the following code works if i include it directly in the header.php

   <?php  if (get_post_meta($post->ID, "fullbg", true)) { ?>
   	<link rel="stylesheet" type="text/css" href="<?php echo bloginfo('stylesheet_directory') ?>/ie/ie7.css" />
   <?php } ?>

   how can i do the same thing in the function.php ?

   Posted 1 year ago #
6. 

   sheep
   Member

   and yes, I tried the get_the ID, with the following code.

   function add_css() { ?>
   
   <?php $postID = get_the_ID(); if (get_post_meta($postID->ID, "fullbg", true)) { ?>
   <link rel="stylesheet" type="text/css" href="<?php echo bloginfo('stylesheet_directory') ?>/ie/ie7.css" />
   <?php } ?>
   
   <?php }
   add_action('wp_head', 'add_css');

   still no avail

   Posted 1 year ago #
7. 

   em hr
   Moderator

   This is an issue of variable scope: http://php.net/manual/en/language.variables.scope.php

   I think this example is more what you're trying for. Notice the is_single() , otherwise the stylesheet would load on index pages as well.

   function add_css() { ?>
   	<?php global $post; ?>
   	<?php if ( is_single() && get_post_meta($post->ID, 'fullbg', true) ) : ?>
   
   	<link rel="stylesheet" type="text/css" href="<?php echo bloginfo('stylesheet_directory') ?>/thestylesheetiwant.css" />
   
   	<?php endif; ?>
   <?php }
   
   add_action('wp_head', 'add_css');

   Posted 1 year ago #
8. 

   helgatheviking
   Moderator

   well get_the_ID didn't work b/c you didn't USE it in your if statement.

   $postID = get_the_ID(); if (get_post_meta($postID, "fullbg", true))

   no guarantee that would've worked either, but as you had it you weren't doing anything different from your first post.

   i think gene has nailed it tho.

   Posted 1 year ago #
9. 

   sheep
   Member

   It worked! Thank you both so much for the help!

   Posted 1 year ago #

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