We have made a custom API to get all the post in descending order and we want to add pagination in that API. I have read other questions and answers but didn't get the idea. Can anyone explain to me with a simple code with pagination so that I can understand how it works? The following is the code that I have done till now:

define('API_ENDPOINT_VERSION',1);

//flush the rewrite rules on plugin activation

function apiendpoint_activate()
{
    flush_rewrite_rules();
}
register_activation_hook(__FILE__,'apiendpoint_activate');

function apiendpoint_register_endpoints(){
    register_rest_route(
        'api/v1',
        '/post',
        [
            'methods' => 'GET',
            'callback' =>'api_get_post',
        ]
    );

}
add_action('rest_api_init','apiendpoint_register_endpoints');

function api_get_post($request){
    $ar = array( 'post_type'=>'post',
         'posts_per_page'=>15,
         'orderby' => 'date',
         'order' => 'DESC',
       );
    $posts = get_posts($ar);
    //var_dump($posts);
    //exit;
    $a = array();

    if($posts){
        foreach ($posts as $post) {


        $a[]= array(   
        'title'=>$post->post_title,
         'link'=>get_the_permalink($post->ID),
         'category'=>get_the_category($post->ID),
         'published_date'=>get_the_date('l, F j, Y',$post->ID),
          'guid'=>$post->guid,
          'image'=>get_the_post_thumbnail_url($post->ID,'large'),
           'description'=>$post->post_excerpt,
           'source'=>"Nepaljapan"
        //'img'=>$img
        );
        }
        return $a;
    }
} 

We have made a custom API to get all the post in descending order and we want to add pagination in that API. I have read other questions and answers but didn't get the idea. Can anyone explain to me with a simple code with pagination so that I can understand how it works? The following is the code that I have done till now:

define('API_ENDPOINT_VERSION',1);

//flush the rewrite rules on plugin activation

function apiendpoint_activate()
{
    flush_rewrite_rules();
}
register_activation_hook(__FILE__,'apiendpoint_activate');

function apiendpoint_register_endpoints(){
    register_rest_route(
        'api/v1',
        '/post',
        [
            'methods' => 'GET',
            'callback' =>'api_get_post',
        ]
    );

}
add_action('rest_api_init','apiendpoint_register_endpoints');

function api_get_post($request){
    $ar = array( 'post_type'=>'post',
         'posts_per_page'=>15,
         'orderby' => 'date',
         'order' => 'DESC',
       );
    $posts = get_posts($ar);
    //var_dump($posts);
    //exit;
    $a = array();

    if($posts){
        foreach ($posts as $post) {


        $a[]= array(   
        'title'=>$post->post_title,
         'link'=>get_the_permalink($post->ID),
         'category'=>get_the_category($post->ID),
         'published_date'=>get_the_date('l, F j, Y',$post->ID),
          'guid'=>$post->guid,
          'image'=>get_the_post_thumbnail_url($post->ID,'large'),
           'description'=>$post->post_excerpt,
           'source'=>"Nepaljapan"
        //'img'=>$img
        );
        }
        return $a;
    }
} 

• rest-api

Share Improve this question edited Sep 16, 2019 at 11:58 Matthew Brown aka Lord Matt 1,06833 gold badges1313 silver badges3434 bronze badges asked Sep 16, 2019 at 5:52 Ajay PaudelAjay Paudel 12111 silver badge55 bronze badges 5

• 1 You don't need a whole new endpoint just to get posts in descending order... – Jacob Peattie Commented Sep 16, 2019 at 6:03
• no no i made it custom bcause i want to make with its own key i mean value with my own key so cn you explain how can i add pagination – Ajay Paudel Commented Sep 16, 2019 at 6:15
• Welcome to WordPress Development. I hope you find the answer(s) you are looking for. Our site is different from most - if you have not done so yet, consider checking out the tour and help center to find out how things work. – Matthew Brown aka Lord Matt Commented Sep 16, 2019 at 10:08
• You could look at WP_REST_Posts_Controller::get_items() which does pagination for a posts query. It looks like it passes the page number from the query string as 'paged' in the options array. It also follows the usual WordPress REST API convention of adding X-WP-Total and X-WP-TotalPages headers with the number of posts and pages respectively. – Rup Commented Sep 16, 2019 at 23:15
• 1 Thanks @MatthewBrownakaLordMatt and yes we have got the correct answer – Ajay Paudel Commented Sep 17, 2019 at 9:23

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1 Answer 1

Sorted by: Reset to default 1

define('API_ENDPOINT_VERSION', 1);

//flush the rewrite rules on plugin activation

function apiendpoint_activate() {
    flush_rewrite_rules(); } register_activation_hook(__FILE__, 'apiendpoint_activate');

function apiendpoint_register_endpoints() {
    register_rest_route(
        'api/v1',
        '/post',
        [
            'methods' => 'GET',
            'callback' => 'api_get_post',
        ]
    );

} add_action('rest_api_init', 'apiendpoint_register_endpoints');

function api_get_post($request) {
    $ar = array('post_type' => 'posts',
        'posts_per_page' => 15,
        'orderby' => 'date',
        'order' => 'DESC',
        'paged' => ($_REQUEST['paged'] ? $_REQUEST['paged'] : 1) 
); 

$posts = get_posts($ar); //var_dump($posts); //exit; $a = array();

if ($posts) {
    foreach($posts as $post) {


        $a[] = array(
            'title' => $post -> post_title,
            'link' => get_the_permalink($post -> ID),
            'category' => get_the_category($post -> ID),
            'published_date' => get_the_date('l, F j, Y', $post -> ID),
            'guid' => $post -> guid,
            'image' => get_the_post_thumbnail_url($post -> ID, 'large'),
            'description' => $post -> post_excerpt,
            'source' => "Nepaljapan"
            //'img'=>$img
        );
    }
    return $a; } 
}

Call API call as below:

/wp-json/api/v1/post?paged=1

Increase the paged value by 1 to get next paging posts. This is the correct answer that we have got and has worked for me