wordpress ajax和foreach - 不返回数组

Question

last time I fight with Ajax and WordPress. I have a problem using Ajax wants to load the Posts of the same category ... in response is replaced Object, only one entry.

Where to find the problem?

ajax.js

var $fnWritePostGrid = function (idCat) {
        var data = {
            type: 'POST',
            url: ajaxOptions.url,
            action: 'kk_load_servicesGrid',
            idCat: idCat
        };
        $.ajax({
            type: "POST",
            url: ajaxOptions.url,
            data: data,
            dataType: "json",
            success: function (response) {
                console.log(response);
            }

        });
        return false;

    };

functions.php

$cat_id = $_POST['idCat'];
$args = array(
    'category' => $cat_id,
    'posts_per_page' => 8,
    'order' => 'DESC'
);  

$posts = get_posts($args);

foreach($posts as $post) {
    $postID = sanitize_text_field($post->ID);
    $postTitle = sanitize_text_field($post->post_title);
    $postContent = sanitize_text_field($post->post_content);

    $response = array(
        'ID' => $postID,
        'title' => $postTitle,
        'content' => $postContent
    );
    echo json_encode($response);
    exit;
}

In summary, the code works but doesn't return an array of entries, only the first entry in the category.

Please help and thanks in advance.

Answer 1

It looks as though your PHP is exiting the thread after the first iteration of your foreach loop:

echo json_encode($response);
exit;

What you likely want to do instead is create an array of all of the posts that you want to return -- something like this:

$responses = array();

foreach($posts as $post) {
    $postID = sanitize_text_field($post->ID);
    $postTitle = sanitize_text_field($post->post_title);
    $postContent = sanitize_text_field($post->post_content);

    $response = array(
        'ID' => $postID,
        'title' => $postTitle,
        'content' => $postContent
    );
    array_push($responses, $response)
}

echo json_encode($responses);
exit;

This way you'll actually be returning a JSON array of objects, rather than a single JSON object.