How to make comments work for a post loaded per Ajax?

Question

I am currently loading a single post using ajax. While the post loading works ok, I cannot get the comments to load. Here is my code:

My javascript to load the post:

<script>
$(".view_post").click(function(e) {
    e.preventDefault();
    postid = $(this).attr("rel");
    $.ajax({
        url:"/wp-admin/admin-ajax.php",
        type:'POST',
        data:'action=posts_open&postid='+postid,
        success: function(html){
            $("#b_contentwrapper").empty();
            $("#b_contentwrapper").append(html);
        }
    });
});
</script>

The javascript goes through functions.php this way:

function implement_posts()
{
    //<?php
    get_template_part( 'loop', 'single' );
    die();
}

Now here is the code where I actually load my post content:

<?php
    $linkid = "p=".$_POST["postid"];
    $posti = new WP_Query($linkid);
    $posti->the_post();
    echo "Time: ";
    the_time('F jS, Y');
    echo "<br />";
    the_category(', ');
    echo "<br />";
    the_title();
    echo "<br />";
    the_content();
    echo "<br />";
    comment_form();
    ?>
    </div>
    <?php if (have_comments()) {
        echo "Comments ok";
    }
    else
    {
        echo "No comments";
    }
    ?>

Now, even for posts having comments I am getting "No comments" displayed. Everything else works correctly. Can anyone help me out?

Thank you.

Answer 1

To quote the Codex on the have_comments function:

This function relies upon the global $wp_query object to be set - this is usually the case from within The Loop

The problem is that your ajax handler creates its own WP_Query object. Note that you are not calling the_post(), instead you are calling $posti->the_post(). Same logic applies to comments as well.

Try the following:

if ($posti->have_comments()) {
    echo "Comments ok";
}  else {
    echo "No comments";
}

Answer 2

On my opinion, it would be better to go with a JQuery .load($[this].attr('href') '.div-with-content-and-comment');

Than make sure you have a single.php that has the markup with the class="div-with-content-and-comment" you want to load via ajax.

Answer 3

Look at the source of have_comments() - this check retrieves data from global $wp_query object, which is not used in your case.

So the first step would be to replace have_comments() check with $posti->have_comments().