mysql query different meta_key and display them separately - mysql

Question

I am a new to mysql and my question is difficult for me to describe. Wordpress stores a lot of postmeta as various meta_keys that contain various meta_values. I'm having a problem trying to query by a particular meta_key but and then being able to display 2 different meta_keys and their values. Here is what I have so far which properly displays all of the video urls from a particular wordpress category...
<?php
$myquery=mysql_query("
SELECT * FROM foy_postmeta AS pm
INNER JOIN foy_term_relationships AS tr ON (pm.post_id = tr.object_id)
INNER JOIN foy_posts AS p ON (pm.post_id = p.ID)
WHERE pm.meta_key='video_url'
AND tr.term_taxonomy_id='27'
AND p.post_status='publish'
ORDER BY p.post_date DESC
");
$rows = array();
while($row=mysql_fetch_array($myquery)){
$rows[] = $row;
}
?>
And then I put this into rows within my html which properly displays all of the video titles and their paths...
<?php
foreach( $rows as $row ) {
<div>my video title: <?php echo $row["post_title"]; ?></div>
<div>my video url: <?php echo $row["meta_value"]; ?></div>
}
?>
Now, what I would like to do is to keep this same row list, but to also write out another meta_key and it's value, something like this....
<?php
foreach( $rows as $row ) {
<div>my video title: <?php echo $row["post_title"]; ?></div>
<div>my video url: <?php echo $row["meta_value"]; ?></div>
<div>my video format is: <?php echo $row["meta_value"]; ?></div>
}
?>
But I'm not sure how I can display 2 meta_values within the same loop since they have separate meta_keys within the same postmeta table.

Answer 1

you can use wp_query for this. Its the wordpress database query for posts which makes things easier when dealing with post_meta.
http://codex.wordpress.org/Class_Reference/WP_Query
for example for the above
$args = array(
'post_type' => 'post',
'meta_query' => array(
array(
'key' => 'video_url',
)
),
'tax_query' => array(
array(
'taxonomy' => 'your taxonomy name here',
'field' => 'slug',
'terms' => 'whatever'
)
),
'orderby' => 'date',
'order' => 'DESC',
);
$query= new wp_query($args);
?>
while ( $query->have_posts() ) : $query->the_post();
$meta = get_post_meta( $post->ID );
var_dump($meta);
?>
<h2><?php the_title(); ?></h2>
<?php endwhile; ?>
now for every post you can access the post_meta (check what the array var_dumps for the keys)
or if you want to persist with mysql use a foreach loop for each row and pass the id to get_post_meta($id); you can then use the postmeta for every row.

Answer 2

I found a solution that although works, I'm thinking there is a better way to do it. I removed the specific meta_key item within the query so that I could grab all meta_keys, and then used if statements within the foreach loop to create variables of the particular ones I wanted to display:
<?php
$myquery=mysql_query("
SELECT * FROM foy_postmeta AS pm
INNER JOIN foy_term_relationships AS tr ON (pm.post_id = tr.object_id)
INNER JOIN foy_posts AS p ON (pm.post_id = p.ID)
WHERE tr.term_taxonomy_id='27'
AND p.post_status='publish'
ORDER BY p.post_date DESC
");
$rows = array();
while($row=mysql_fetch_array($myquery)){
$rows[] = $row;
}
<?php
foreach( $rows as $row ) {
// sets video url and video layout values as variables
if ($row["meta_key"] == "video_url" ){ $videourl = $row["meta_value"]; }
if ($row["meta_key"] == "video_layout" ){ $videolayout = $row["meta_value"]; }
if ($row["meta_key"] == "video_url" ){
?>
<div>my video url: <?php echo $videourl ?></div>
<div>my video format is: <?php echo $videolayout ?></div>
<?php
}
}
?>