Filter for just one type of attachment

Resolved

(@orionrush)

Im having trouble migrating to the new version because Im now not sure how to filter the attachments for a specific file type/mime. Below is a working example from before the rewrite which filters for images. Can someone help and point me in the right direction?

Many thanks

// ========================================
// ! Returns attached images as a gallery
// ========================================
function tr_get_attachments_image($post){
 	global $post;
 	$content_attach = '';
 	$is_test = "";
	if( function_exists( 'attachments_get_attachments' ) ){
		$attachments = attachments_get_attachments();
		$attachments_count = count( $attachments );

		//see if there are any images
		if ( $attachments_count ){
			for ($i=0; $i < $attachments_count; $i++) {
        	$mime = strtok($attachments[$i]['mime'], "/");

          if ( strstr($mime, 'image') ) {
            $is_test = true;
          break;
          }
        }
        // if so only ouput the images
        if ( $is_test == true ) {
			$content_attach = '[fancybox]<div class="attached_gallery">';
			$content_attach .=  '<div class="attachment-title">';
			$content_attach .= '<h4 class="gallery">Image Gallery</h4>';
			$content_attach .= '</div>';
			$content_attach .= '<ul id="" class="thumbnails gallery">';
			for( $i=0; $i<$attachments_count; $i++ ){
				// if attachment is jpeg, png, gif images extension
				if($attachments[$i]['mime'] == 'image/jpeg' || $attachments[$i]['mime'] == 'image/png' || $attachments[$i]['mime'] == 'image/gif' ){
					// get attachment data for full version and thumbnail version.
					$full_image = wp_get_attachment_image_src($attachments[$i]['id'], 'full');
					$thumb_image = wp_get_attachment_image_src($attachments[$i]['id'], 'thumbnail');

					$content_attach .= '<li class="gallery-item brick" >';
					$content_attach.= '<a class="fancybox thumbnail" rel="gallery" title="'.$attachments[$i]['title'].'" href="'.$full_image[0].'" >';
					$content_attach .= '<img class="attachment-thumbnail" alt="' . $attachments[$i]['title'] . '" title="' . $attachments[$i]['title'] . '" src="'.$thumb_image[0].'" width="'.$thumb_image[1].'" height="'.$thumb_image[2].'"/>';
					$content_attach .= '</a>';
					$content_attach .= '</li>';
					}
			}
			$content_attach .= '</ul>';
			$content_attach .= '</div>';

		}
		echo apply_filters('the_content', $content_attach );
		}
		//if ($is_test != true ) echo "<p>no gallery?</p>";
	}
}

http://wordpress.org/extend/plugins/attachments/

Viewing 3 replies - 1 through 3 (of 3 total)

Plugin Author

Jon Christopher

(@jchristopher)

11 years, 4 months ago

You can accomplish this with the new one, check out these two utility functions available:

<?php $attachments = new Attachments( 'attachments' ); /* pass the instance name */ ?>
<?php if( $attachments->exist() ) : ?>
  <h3>Attachments</h3>
  <ul>
    <?php while( $attachments->get() ) : ?>
      <li>
        Type: <?php echo $attachments->type(); ?><br />
        Subtype: <?php echo $attachments->subtype(); ?><br />
      </li>
    <?php endwhile; ?>
  </ul>
<?php endif; ?>

The type() is the primary segment of the mimetype (e.g. ‘image’) and the subtype() is the secondary segment of the mimetype (e.g. ‘png’)

Thread Starter

orionrush

(@orionrush)

11 years, 4 months ago

Thanks for coming back to me Jonathan,
Im not working with it in a template but in a plugin.

What I have so far is the following:

function tr_get_attachments_image(){
	$id = get_the_ID();
	$is_test = false;
 	$content_attach = '';
 	$attachments = new Attachments( 'attachments', $id );
	if( $attachments->exist() ){
		while ( $attachments->get() ){
			if($attachments->type()=="image"){
				$is_test = true;
				break;
			}
		}
		if($is_test == true){
			$content_attach = '[fancybox]<div class="attached_gallery">';
			$content_attach .= '<div class="attachment-title"><h4 class="gallery">Image Gallery</h4></div>';
			$content_attach .= '<ul id="" class="thumbnails gallery">';
			while ( $attachments->get() ){
				$mytype=get_post_mime_type($attachments->id('full'));
				if($mytype=="image/jpeg" || $mytype=="image/gif"){
					$full_image = wp_get_attachment_image_src($attachments->id('full'));
					$thumb_image = wp_get_attachment_image_src($attachments->id('thumbnail'));
					$content_attach .= '<li class="gallery-item brick" >';
					$content_attach .= '<a class="fancybox thumbnail" rel="gallery" title="'. $attachments->field( 'title' ) .'" href="'. $full_image[0] .'" >';
					$content_attach .= '<img class="attachment-thumbnail" alt="' . $attachments->field( 'title' ) . '" title="' . $attachments->field( 'title' ) . '" src="'. $thumb_image[0] .'" width="'. $thumb_image[1] .'" height="'.$thumb_image[2].'"/>';
					$content_attach .= '</a>';
					$content_attach .= '</li>';
				}
			}
		}
		$content_attach .= '</ul>';
		$content_attach .= '</div> <!- end image gallery -->';
		echo apply_filters('the_content', $content_attach );
	}
}

Two issues, its not returning the correct number of images (its missing the first one) – we suspect its to do with my second while ( $attachments->get() )

also Im not getting the correct urls for
$full_image = wp_get_attachment_image_src($attachments->id('full'));
$thumb_image = wp_get_attachment_image_src($attachments->id('thumbnail'));

Thread Starter

orionrush

(@orionrush)

11 years, 3 months ago

This seems to resolve the above issues – incase anyone has need of it.
Happy 2013

function tr_get_attachments_image(){
	$id = get_the_ID();
	$bFoundImages = false;
 	$content_attach_li = '';
 	$content_attach = '';
 	$attachments = new Attachments( 'attachments', $id );
	if( $attachments->exist() ){
		while ( $attachments->get() ){
			if($attachments->type()=="image"){
  			    if($attachments->subtype()=="jpeg" || $attachments->subtype()=="gif" || $attachments->subtype()=="png"){
					$bFoundImages = true;
					$full_image = wp_get_attachment_image_src($attachments->id(),'full');
					$thumb_image = wp_get_attachment_image_src($attachments->id(),'thumbnail');
					$content_attach_li .= '<li class="gallery-item brick" >';
					$content_attach_li .= '<a class="fancybox thumbnail" rel="gallery" title="'. $attachments->field( 'title' ) .'" href="'. $full_image[0] .'" >';
					$content_attach_li .= '<img class="attachment-thumbnail" alt="' . $attachments->field( 'title' ) . '" title="' . $attachments->field( 'title' ) . '" src="'. $thumb_image[0] .'" width="'. $thumb_image[1] .'" height="'.$thumb_image[2].'"/>';
					$content_attach_li .= '</a>';
					$content_attach_li .= '</li>';
                		}
			}
		}
	}
	if($bFoundImages){
		$content_attach = '[fancybox]<div class="attached_gallery">';
		$content_attach .= '<div class="attachment-title"><h4 class="gallery">Image Gallery</h4></div>';
		$content_attach .= '<ul id="" class="thumbnails gallery">';
		$content_attach .=	$content_attach_li;
		$content_attach .= '</ul>';
		$content_attach .= '</div>';
		echo apply_filters('the_content', $content_attach );
	}
}

Viewing 3 replies - 1 through 3 (of 3 total)

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