[Plugin: Media Tags] checking to see whether image is tagged

  • I have “feature images” (aka post thumbnails) associated with some pages. There are two ways they can be displayed — some span two columns (“fullhead”) and some span only a single column (“colhead”). Full heads are displayed in the header template file; column heads in the page template file. I used Media Tags to tag them either “fullhead” or “colhead.”

    I had no trouble getting a post thumbnail or displaying it, but was challenged to out an easy way to find how the thumbnails were tagged. So I thought I would share my solution and see if anyone can improve on it.


    function printFeatureImage ($type='fullhead')
    {
    global $post;

    $tag_ids = array('fullhead'=>116,'colhead'=>117);

    // don't print a second feature image
    if ( $this->featureImagePrinted ) {
    return;
    }

    // is this a page with a feature image (post thumbnail)?
    if ( is_singular() && has_post_thumbnail( $post->ID ) ) {

    // is this feature image the right size (column head or feature head)?
    $tags = wp_get_object_terms( get_post_thumbnail_id( $post->ID ), MEDIA_TAGS_TAXONOMY, 'fields=ids' );

    if ( in_array($tag_ids[$type],$tags) ) {
    echo get_the_post_thumbnail( $post->ID, 'post-thumbnail' );
    $this->featureImagePrinted = true;
    }
    }
    }

    The header template calls printFeatureImage(‘fullhead’) and the page template calls printFeatureImage(‘colhead’), which simply returns if a fullhead has already been printed. Note that this code is in a class, which is why the value of $this->featureImagePrinted is saved between function calls.

    https://www.ads-software.com/extend/plugins/media-tags/

Viewing 3 replies - 1 through 3 (of 3 total)
  • Plugin Author Paul Menard

    (@pmenard)

    mcdonna Wondering if you found a solution to you problem.

    Thread Starter Donna McMaster

    (@mcdonna)

    Paul, thanks for asking. This code works fine. I just was wondering if there was a cleaner way to do it. In particular, would be nicer to query the media tag by name (e.g., “colhead”) instead of ID (e.g., 117).

    Plugin Author Paul Menard

    (@pmenard)

    Well how about a has_mediatag function? Instead of all the call to wp_get_object_terms and in_array you can a) get the thumbnail ID then pass that Id into has_mediatag as the second argument. The first argument is the slug of the mediatag. In your case ‘colhead’ and then ‘fullhead’. You would of course need to call has_mediatag twice. Once or each mediatag you are searching.

    Also a note this will be a function in the upcoming Media-Tags 3.0 release coming soon with a brand new Bulk admin interface. So it you use this function below name it something unique. Otherwise when the new version comes out you will get a conflict.
    Cheers.

    P-

    function printFeatureImage ($type='fullhead')
{
	global $post;

	$tag_ids = array('fullhead'=>116,'colhead'=>117);

	// don't print a second feature image
	if ( $this->featureImagePrinted ) {
		return;
	}

	// is this a page with a feature image (post thumbnail)?
	if ( is_singular() && has_post_thumbnail( $post->ID ) ) {

		// is this feature image the right size (column head or feature head)?
		if ((my_has_mediatag('fullhead', get_post_thumbnail_id( $post->ID )))
 		 || (my_has_mediatag('colhead', get_post_thumbnail_id( $post->ID ))) )
		{
			echo get_the_post_thumbnail( $post->ID, 'post-thumbnail' );
			$this->featureImagePrinted = true;
		}
	}
}

function my_has_mediatag( $tag = '', $_post = null ) {

	if ( $_post ) {
		$_post = get_post( $_post );
	}
	else {
		$_post =& $GLOBALS['post'];
	}
	if ( !$_post )
		return false;

	$r = is_object_in_term( $_post->ID, MEDIA_TAGS_TAXONOMY, $tag );

	if ( is_wp_error( $r ) )
		return false;
	return $r;
}
Viewing 3 replies - 1 through 3 (of 3 total)
  • The topic ‘[Plugin: Media Tags] checking to see whether image is tagged’ is closed to new replies.