masteradmin on "get the oembed code of a video in a WP 2.9 post from postmeta"

masteradmin — Mon, 21 Dec 2009 14:19:51 +0000

The latest WordPress 2.9 got a new function to automatically embed all plain text URLs with the help of oembed. On a blog displaying resized images together with the_excerpt it is nice to show also the embeded video clips if there is no image.
So how to get the code to embed a video from the database?
In WordPress 2.9, if you insert a plain URL link to a video from an oembed enabled site, WordPress will try to put the whole code around this URL to embed this video in a player.
This code will not show up in edit posts, but is written to postmeta table. The meta_key is looking like '_oembed_74dd854eb13572c16.....' and it's meta_value is the actually html code to get parsed.

Working inside the loop, we are going to get the unique meta_key of a post starting with oembed. If in a post is this meta_key we assign this to a variable (here: $oembkey)
Next we get the value of this key, which is actually the full html embed code (here: $embedhtml)

Finally we can echo $embedhtml to display only the video without the_content or the_excerpt.

The code to get only the embeded video:

<?php
  $custom_field_keys = get_post_custom_keys();
  foreach ( $custom_field_keys as $key => $value ) {
    $valuet = trim(substr($value, 1, 4));
	if ( 'oemb' == $valuet ) { // look if a oembed key exists
    $oembkey = $value; //now set the the key we found as oembkey
	$oembvalue = get_post_custom_values($oembkey); //get the value of oembkey as oembvalue
	if (isset($oembvalue[0])) {
		$embedhtml = ($oembvalue[0]);
	  }
	}
  }
?>

and now echo it:

<?php echo $embedhtml; ?>

In another topic I will explain how to resize this player here:
Change width and height in oembed code on the fly WP 2.9

Wordpress and Webdesign Forum go41 » Topic: get the oembed code of a video in a WP 2.9 post from postmeta

masteradmin on "get the oembed code of a video in a WP 2.9 post from postmeta"