wp-dynamic-post-type-query-template.php

<?php

// Query
add_action('pre_get_posts', 'hwk_dynamic_pre_get_posts');
function hwk_dynamic_pre_get_posts($query){
    if(is_admin() || !$query->is_main_query())
        return;
    
    // Post Types
    if(is_home() || $query->is_post_type_archive() || is_singular()){
        if(!$post_type = (is_home()) ? 'post' : $query->get('post_type'))
            return;
        
        $post_type_object = get_post_type_object($post_type);
        
        $rule = array();
        $rule['is_archive'] = is_post_type_archive($post_type_object->name);
        $rule['has_archive'] = $post_type_object->has_archive;
        
        if($post_type == 'post'){
            $rule['is_archive'] = is_home();
            $rule['has_archive'] = true;
        }
        
        // Single
        if(is_singular($post_type))
            $query = apply_filters('hwk/post_type/' . $post_type . '/query/single', $query);
        
        // Archive
        elseif($rule['has_archive'] && $rule['is_archive'])
            $query = apply_filters('hwk/post_type/' . $post_type . '/query/archive', $query);
    }
    
    // Taxonomies
    elseif($query->is_tax() || $query->is_category() || $query->is_tag()){
        $queried_object = get_queried_object();
        if(!$queried_object || !isset($queried_object->taxonomy))
            return;
        
        $query = apply_filters('hwk/taxonomy/' . $queried_object->taxonomy . '/query', $query);
    }
}

// Template
add_filter('template_include', 'hwk_dynamic_template', 999);
function hwk_dynamic_template($template){
    // Post Types
    if(is_singular() || is_post_type_archive() || is_home()){
        global $wp_query;
        
        $post_type = get_post_type();
        if(!$post_type && is_home())
            $post_type = 'post';
        
        if(!$post_type && isset($wp_query->query['post_type']))
            $post_type = $wp_query->query['post_type'];
            
        if(!$post_type)
            return $template;
        
        $post_type_object = get_post_type_object($post_type);
        
        $rule = array();
        $rule['is_archive'] = is_post_type_archive($post_type_object->name);
        $rule['has_archive'] = $post_type_object->has_archive;
        
        if($post_type == 'post'){
            $rule['is_archive'] = is_home();
            $rule['has_archive'] = true;
        }
        
        // Single
        if(is_singular($post_type) && ($locate = locate_template(array(apply_filters('hwk/post_type/' . $post_type . '/template/single', $template)))))
            return $locate;
        
        // Archive
        elseif($rule['has_archive'] && $rule['is_archive'] && ($locate = locate_template(array(apply_filters('hwk/post_type/' . $post_type . '/template/archive', $template)))))
            return $locate;
        
        return $template;
    }
    
    // Taxonomies
    elseif(is_tax() || is_category() || is_tag()){
        $queried_object = get_queried_object();
        if(!$queried_object || !isset($queried_object->taxonomy))
            return $template;
        
        if(($locate = locate_template(array(apply_filters('hwk/taxonomy/' . $queried_object->taxonomy . '/template', $template)))))
            return $locate;
        
        return $template;
    }
    
    return $template;
}

// Post Type: Permalink
add_filter('post_type_link', 'hwk_dynamic_post_type_permalink', 10, 2);
add_filter('post_link', 'hwk_dynamic_post_type_permalink', 10, 2);
function hwk_dynamic_post_type_permalink($link, $post){ 
    if(!apply_filters('hwk/post_type/' . $post->post_type . '/args/no_single', false))
        return $link;
    
    if($post_type_archive_link = get_post_type_archive_link($post->post_type))
        return $post_type_archive_link;
    
    return home_url();
}

// Post Type: Rewrite Rules
add_action('init', 'hwk_dynamic_post_type_rewrite_rules', 999);
function hwk_dynamic_post_type_rewrite_rules(){
    $post_types = get_post_types(array('publicly_queryable' => true), 'objects');
    if(empty($post_types))
        return;
    
    foreach($post_types as $post_type){
        if(!apply_filters('hwk/post_type/' . $post_type->name . '/args/no_single', false))
            continue;
        
        add_filter($post_type->name . '_rewrite_rules', '__return_empty_array');
    }
}

// Post Type: Row Actions
add_filter('page_row_actions', 'hwk_dynamic_post_type_row_actions', 10, 2);
add_filter('post_row_actions', 'hwk_dynamic_post_type_row_actions', 10, 2);
function hwk_dynamic_post_type_row_actions($actions, $post){
    if(!apply_filters('hwk/post_type/' . $post->post_type . '/args/no_single', false))
        return $actions;
    
    unset($actions['view']);
    return $actions;
}

// Post Type: Args
add_filter('register_post_type_args', 'hwk_dynamic_post_type_args', 10, 2);
function hwk_dynamic_post_type_args($args, $post_type){
    if(!apply_filters('hwk/post_type/' . $post_type . '/args/no_single', false))
        return $args;
    
    if($args['show_ui'] === null)
        $args['show_ui'] = true;
    
    if($args['show_in_nav_menus'] === null)
        $args['show_in_nav_menus'] = true;
    
    if($args['publicly_queryable'] === null)
        $args['publicly_queryable'] = true;
    
    if($args['exclude_from_search'] === null)
        $args['exclude_from_search'] = true;
    
    $args['public'] = false;
    
    return $args;
}

// WP_Post
add_filter('posts_results', 'hwk_dynamic_post_type_wp_post', 10, 2);
function hwk_dynamic_post_type_wp_post($posts, $query){
    if(empty($posts))
        return $posts;
    
    foreach($posts as $post){
        $post = apply_filters('hwk/post_type/' . get_post_type($post) . '/query/post/all', $post, $query);
        
        if($query->is_singlular())
            $post = apply_filters('hwk/post_type/' . get_post_type($post) . '/query/post/single', $post, $query);
    }
    return $posts;
}