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=== Ambrosite Next/Previous Post Link Plus === Contributors: ambrosite Donate link: http://www.ambrosite.com/plugins Tags: adjacent, next, previous, post, link, links, sort, sorted, sortable, order, reordered, thumbnail, thumbnails, truncate, loop, format, author Requires at least: 2.5 Tested up to: 3.3 Stable tag: trunk Upgrades the next/previous post link functions to reorder or loop adjacent post navigation links, display post thumbnails, and customize link format. == Description == **IMPORTANT: Make sure you are using the right plugin.** * **Next/Previous Post Link Plus** is intended for use in **single post** templates. * **Next/Previous Page Link Plus** is intended for use in **page** templates. The two plugins have similar sounding, but different, function names. If you mistakenly install the wrong plugin, you will get a "call to undefined function" error. If you want to create next/previous links for your pages, please check out: http://wordpress.org/extend/plugins/ambrosite-nextprevious-page-link-plus/ **IMPORTANT: This plugin is not compatible with PHP 4.** If you try to install it on a host running PHP 4, you will get a parse error. WordPress has officially ended support for PHP 4 as of version 3.2, so you should upgrade to PHP 5.2 now. For those who cannot upgrade, you can download the alternate PHP 4 compatible version of the plugin. The only difference with the PHP 4 version is that the *%category* variable will not work with custom taxonomies. http://www.ambrosite.com/download/ambrosite-nextprevious-post-link-plus.php4.zip This plugin creates two new template tags -- **next_post_link_plus** and **previous_post_link_plus** -- which are upgraded versions of the core WordPress next_post_link and previous_post_link template tags. The new tags include all of the functionality of the core tags, plus the following additional options: * Sort the next/previous post links on columns other than post_date (e.g. alphabetically). * Sort next/previous links on custom fields (both string and integer sorts are supported). * Full WordPress 3.3 compatibility, including support for custom post types, custom taxonomies, and post formats. * Loop around to the first post if there is no next post (and vice versa). * Retrieve the first/last post, rather than the previous/next post (for First|Previous|Next|Last navigation links). * Display post thumbnails alongside the links (WordPress 2.9 or higher). * Truncate the link titles to any length, and display custom text in the tooltip. * Display the title, date, author, category, and meta value of the next/previous links. * Specify a custom date format for the %date variable. * Restrict next/previous links to same category, taxonomy, format, author, custom field value, custom post ID list, or custom category list. * Exclude categories, custom taxonomies, post formats, or individual post IDs. * Three category exclusion methods for greater control over the navigation stream. * Return multiple next/previous links (e.g. the next N links, in an HTML list). * Return the ID, title, date, href attribute, or post object of the next/previous links, instead of echoing them to the screen. * Return false if no next/previous link is found, so themes may conditionally display alternate text. * Works with Post Types Order and other popular post reordering plugins. Extensive documentation on configuring the plugin may be found here: http://www.ambrosite.com/plugins/next-previous-post-link-plus-for-wordpress == Installation == * Upload ambrosite-post-link-plus.php to the /wp-content/plugins/ directory. * Activate the plugin through the Plugins menu in WordPress. * Edit your template files, and replace the next_post_link and previous_post_link template tags with next_post_link_plus and previous_post_link_plus. Configure them using parameters as explained in the online documentation: http://www.ambrosite.com/plugins/next-previous-post-link-plus-for-wordpress == Frequently Asked Questions == * How exactly do I install this plugin? Which file needs to be edited, and where do I put the code? * I am getting a parse error while attempting to install the plugin. Why? * I am getting a "call to undefined function" error. Why? * How can I get rid of the arrows on my next/previous links? * I am confused about the difference between strong, differential, and weak exclusion. Which one should I use? * I am using a custom field with a simple integer value to order my posts, but they're not sorting correctly. Why? * I am seeing the number '1' printed next to my links. Why? * What about compatibility with the Post Types Order plugin? * What about compatibility with the WPML plugin? * What about compatibility with the qTranslate plugin? * Is there any way to use an image instead of link text? Answers to these questions may be found here: http://www.ambrosite.com/plugins/next-previous-post-link-plus-for-wordpress#faq == Changelog == = 2.4 = * Added 'in_cats' parameter. * Added 'in_same_meta' parameter. * Added 'return' parameter to specify what should be returned from the function. * Added 'date_format' parameter for customizing the %date variable. * Added %title variable to 'format' parameter. * Added option to sort on custom fields as integers rather than strings. * Primary sort column defaults to 'menu_order' if Post Types Order plugin is installed. * Many documentation updates to address frequently asked questions. = 2.3 = * Added 'in_same_author' parameter. * Added 'in_posts' parameter. * Added 'post_type' parameter. * Added option to specify a custom taxonomy with 'in_same_tax'. * Added new format variable (%author). * Added variables (%title, %date, %author) to custom tooltip text. * Added option to suppress the tooltip completely. * Renamed filters for compatibility with Post Types Order and other plugins that attempt to filter the output of get_adjacent_post. = 2.2 = * Added option to retrieve the first/last post links. * Added support for post formats. * Improved support for custom taxonomies. * Added 'tooltip' parameter to specify custom tooltip text. * Added %meta variable to the format parameter. * Ground-up rewrite of the 'ex_cats' functionality, with three exclusion methods for greater control over the navigation stream. * Added 'ex_posts' parameter to exclude individual post IDs. * Added option to return the next/previous links as a PHP string. = 2.1 = * Added 'order_2nd' parameter for specifying a secondary sort column. * Updated the documentation to address PHP 4 incompatibility problems. = 2.0 = * Full WordPress 3.0 compatibility, including custom post types. * Rewrote the plugin using wp_parse_args to simplify the function calls. * Added option to sort the next/previous links on custom fields. * Added option to return multiple next/previous links. * Fix for custom taxonomies. * Added %category variable to the format parameter. * Added 'before' and 'after' parameters. * Added support for post thumbnail sizes. * Added 'echo' parameter. = 1.1 = * Added truncate link title and loop options. * Added support for post thumbnails. = 1.0 = * Initial version.