Ticket #16149: query-standard-format-posts.php

<?php
/*
Plugin Name: Query Standard Format Posts
Description: Allows you to query posts with the standard post format
Version: 0.1
Author: Mark Jaquith &amp; Andrew Nacin
Author URI: http://wordpress.org/
*/

class CWS_Query_Standard_Format_Posts {
        static $instance;

        function __construct() {
                self::$instance = $this; // So other plugins can remove our hooks
                add_action( 'init', array( &$this, 'init' ) );
                register_activation_hook( __FILE__, array( $this, 'activate' ) );
        }

        function init() {
                add_filter( 'request', array( $this, 'request' ), 5 );
        }

        function activate() {
                if ( ! term_exists( 'post-format-standard', 'post_format' ) )
                        wp_insert_term( 'post-format-standard', 'post_format' );
        }

        function request( $qvs ) {
                if ( ! isset( $qvs['post_format'] ) )
                        return $qvs;
                $slugs = array_flip( get_post_format_slugs() );
                $by_raw_slug = get_post_format_slugs();
                $by_translated_slug = array_flip( $by_raw_slug );
                if ( 'standard' == $by_translated_slug[ $qvs['post_format'] ] ) {
                        if ( isset( $slugs[ $qvs['post_format'] ] ) )
                                $qvs['post_format'] = 'post-format-' . $slugs[ $qvs['post_format'] ];
                        // If 'standard', then query every persistent format with a NOT IN instead.
                        unset( $qvs['post_format'] );
                        $formats = array();
                        $raw_slugs = array_diff( array_keys( $by_raw_slug ), array( 'standard' ) );
                        foreach ( $raw_slugs as $format ) {
                                $formats[] = 'post-format-' . $format;
                        }
                        if ( ! isset( $qvs['tax_query'] ) )
                                $qvs['tax_query'] = array();
                        $qvs['tax_query'][] = array( 'taxonomy' => 'post_format', 'terms' => $formats, 'field' => 'slug', 'operator' => 'NOT IN' );
                        $qvs['tax_query']['relation'] = 'AND';
                        // Repair the query flags and queried object.
                        add_action( 'parse_query', array( $this, 'parse_query' ) );
                }
                // Only post types that support formats should be queried.
                $tax = get_taxonomy( 'post_format' );
                $qvs['post_type'] = $tax->object_type;
                return $qvs;
        }

        function parse_query( $q ) {
                $q->is_tax = $q->is_archive = true;
                $q->is_home = false;
                $q->queried_object = get_term_by( 'slug', 'post-format-standard', 'post_format' );
                $q->queried_object_id = $q->queried_object->term_id;
        }

}

new CWS_Query_Standard_Format_Posts;