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1. songdogtech
   Member
   Posted 2 years ago #

   Hello, Is this a bug in get_post_meta? This code should display the contents of the field "qanda" for the most recent post in the category "posts." But nothing shows. Using this wp_query with generating permalinks to the most recent post in "posts" works fine.

   This is run inside the loop:

   <?php $my_query = new WP_Query('category_name=posts&showposts=1'); ?><?php while ($my_query->have_posts()) : $my_query->the_post(); ?><?php echo get_post_meta($post->ID, "qanda", $single = true); ?><?php endwhile; ?>

   Thanks...

2. songdogtech
   Member
   Posted 2 years ago #

   Still trying to figure this out. If I hard code a post number, such as:

   <?php echo get_post_meta('602', "qanda", $single = true); ?>

   the value of the custom field "qanda" will echo. But the code won't take the post ID generated by the query loop.

   Any ideas? Thanks, Mark

3. songdogtech
   Member
   Posted 2 years ago #

   Still trying to figure this out. Why isn't get_post_meta getting the the dynamic post ID? Thanks, Mark

4. Mark / t31os
   Moderator
   Posted 2 years ago #

   Use....
   $my_query->post->ID

   In the get_post_meta ...

   $post->ID will refer to the current post (in the normal loop) and not the one in your custom loop..

5. songdogtech
   Member
   Posted 2 years ago #

   Jeez, that was pretty simple. I tried $the_post->ID, but that next logical step in passing the post ID from my_query escaped me. And it works with multiple loops on the same page/post. Thanks much.

6. Mark / t31os
   Moderator
   Posted 2 years ago #

   When you're writing code and passing variables around, to make it easier on yourself, dump the data you need to look at on the screen while testing...

   print '<pre>';
   print_r($var);
   print '</pre>';

   That will happily print out the contents of an array, object or string...

   The <pre> tags just format the code in a manner that is more readable..

   For example, to see what is stored in $my_query...
   

   print '<pre>';
   print_r($my_query);
   print '</pre>';

   Glad i was able to help anyway... ;)

7. songdogtech
   Member
   Posted 2 years ago #

   That's slick. Thanks. Someone on stackoverflow.com said I should dump variables using var_dump but it didn't work for some reason, as now I realize I had that syntax wrong, too:

   <?php print '<pre>';
   var_dump($my_variable);
   print '</pre>'; ?>

8. Mark / t31os
   Moderator
   Posted 2 years ago #

   Prefer print_r to var_dump myself...

   I usually add a small function for the job if i'm testing stuff though, save having to add pre tags everytime...

   function printpre( $data ) {
     print '<pre>';
     print_r( $data );
     print '</pre>';
   }

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