Problems using the Loop in a plugin

  • ParanoidSardine

    (@paranoidsardine)


    14 years, 3 months ago

    Hi…I’m trying to use the loop in a plugin to populate a select element. When I call the loop, I’m getting no results. I have many posts on my development setup, but they do not seem to be accessible. I’m trying to run this code in a submenu page in the administration panel.

    Here’s the code I’ve been using:

    // Get all posts for the select options
	if(have_posts())
	{
		while(have_posts())
		{
			the_post();

			$titles[$post->ID] = the_title();
		}
	}

    Also, I’ve played around with using the $wp_query objecy:

    global $wp_query;

	print_r($wp_query);

    This code returns:

    WP_Query Object ( [query] => [query_vars] => Array ( ) [queried_object] => [queried_object_id] => [request] => [posts] => [post_count] => 0 [current_post] => -1 [in_the_loop] => [post] => [comments] => [comment_count] => 0 [current_comment] => -1 [comment] => [found_posts] => 0 [max_num_pages] => 0 [max_num_comment_pages] => 0 [is_single] => [is_preview] => [is_page] => [is_archive] => [is_date] => [is_year] => [is_month] => [is_day] => [is_time] => [is_author] => [is_category] => [is_tag] => [is_tax] => [is_search] => [is_feed] => [is_comment_feed] => [is_trackback] => [is_home] => [is_404] => [is_comments_popup] => [is_admin] => [is_attachment] => [is_singular] => [is_robots] => [is_posts_page] => )

    Can anyone help me figure out why I cannot get this post information?

Viewing 6 replies - 1 through 6 (of 6 total)
  • vtxyzzy

    (@vtxyzzy)

    14 years, 3 months ago

    Try putting rewind_posts(); ahead of your if (have_posts()). See the Codex http://codex.wordpress.org/The_Loop, especially the section ‘Loop Examples’. Search for rewind.

    Thread Starter ParanoidSardine

    (@paranoidsardine)

    14 years, 3 months ago

    Thanks for the idea, but it does not seem to work. I was able to get what I wanted by doing this:

    // Print out the select forms
global $wpdb;
$query = "SELECT * FROM $wpdb->posts WHERE post_type = 'post' ORDER BY post_date DESC";
$posts = $wpdb->get_results($query);

if(count($posts) > 0) // equivalent to have_posts()
{
	foreach($posts as $post) // equivalent to while(have_posts())
	{
		echo '<option value="'.$post->ID.'">"'.$post->post_title.'" By: '.get_usermeta($post->post_author, 'last_name').', '.get_usermeta($post->post_author, 'first_name').' - Published: '.substr($post->post_date,0,10).'</option>';
	}
}

    I’m still interested to know why the loop wouldn’t work in this context. To my knowledge, the loop isn’t called on this page at all. That’s why I don’t think rewind_posts() helped.

    vtxyzzy

    (@vtxyzzy)

    14 years, 3 months ago

    Glad you solved it. Please mark this topic ‘Resolved’ in the dropdown at top right.

    Thread Starter ParanoidSardine

    (@paranoidsardine)

    14 years, 3 months ago

    I will play by the rules, but my basic question of why the loop isn’t working in the plugin context is still unanswered. I feel like a solution that uses the have_posts() functions is better for future compatibility and for my personal knowledge, I would like to know the best solution here. Thanks!

    vtxyzzy

    (@vtxyzzy)

    14 years, 3 months ago

    Sorry, I thought you were done. When you dumped out $wp_query, it was empty. What type of query did you think should be run on this page? Perhaps you can do your own query_posts() with the arguments you want.
    Then have_posts() should work.

    Thread Starter ParanoidSardine

    (@paranoidsardine)

    14 years, 3 months ago

    I’ll give that a try. I have two situations, one in which I want to get all posts and another where I needed posts of with a specific category. I will check into query_posts to see what I get.

Viewing 6 replies - 1 through 6 (of 6 total)
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