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1. Parakoos
   Member
   Posted 4 months ago #

   Smarter Navigation allows you to create a back-link to the referring category or tag by using this code:

   <?php referrer_link(); ?>

   But this only outputs the name of the tag or category. What if you want something like this:

   Browsing the tag Awesome Stuff.
   Browsing category Photos.

   Basically, you want to output different text for tags, categories etc. Simple. Query the cookies.

   <?php if( strpos($_COOKIE['smarter-navigation']['query'], 'tag') ) { ?>
   	Browsing the tag <?php referrer_link(); ?>.
   <?php } elseif( strpos($_COOKIE['smarter-navigation']['query'], 'category') ) { ?>
   	Browsing category <?php referrer_link(); ?>.
   <?php } else { ?>
   	Browsing <?php referrer_link(); ?>.
   <?php } ?>

   You can see a working version of this at The Modern Nomad.

   http://wordpress.org/extend/plugins/smarter-navigation/

2. scribu
   Member
   Posted 4 months ago #

   It would be more reliable to use the decoded version of the data, instead of reading the cookie directly:

   if ( isset( Smarter_Navigation::$data['query']['category'] ) {
     ...
   } elseif ( isset( Smarter_Navigation::$data['query']['tag'] ) {
     ...
   }

   etc.

3. Parakoos
   Member
   Posted 4 months ago #

   Thanks for the correction. Indeed, that works. However, for the category, you need to use 'category_name' and not 'category'.

   if ( isset( $query_vars['category_name'] ) {

4. scribu
   Member
   Posted 4 months ago #

   Actually, even more reliable would be to create a dummy WP_Query instance and use it's conditional tags:

   $q = new WP_Query;
   $q->parse_query( Smarter_Navigation::$data['query'] );
   
   if ( $q->is_category() ) {
     ...
   } elseif ( $q->is_tag() ) {
     ...
   }

5. Parakoos
   Member
   Posted 4 months ago #

   Would that cause another expensive DB query?

6. scribu
   Member
   Posted 4 months ago #

   Nope, because you create the instance without any parameters and then call parse_query().

7. Parakoos
   Member
   Posted 4 months ago #

   Yep, that works very well. Awesome!

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