Created
July 24, 2018 12:48
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test source-url-to-image-captions
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| <?php | |
| add_filter("attachment_fields_to_edit", "add_image_source_url", 10, 2); | |
| function add_image_source_url($form_fields, $post) { | |
| $form_fields["source_url"] = array( | |
| "label" => __("Source URL"), | |
| "input" => "text", | |
| "value" => get_post_meta($post->ID, "source_url", true), | |
| "helps" => __("Add the URL where the original image was posted"), | |
| ); | |
| $form_fields["source_credit"] = array( | |
| "label" => __("Source Credits"), | |
| "input" => "text", | |
| "value" => get_post_meta($post->ID, "source_credit", true), | |
| "helps" => __("If you add credits, those will be linked instead of the whole caption."), | |
| ); | |
| return $form_fields; | |
| } | |
| add_filter("attachment_fields_to_save", "save_image_source_url", 10 , 2); | |
| function save_image_source_url($post, $attachment) { | |
| if (isset($attachment['source_url'])) | |
| update_post_meta($post['ID'], 'source_url', trim($attachment['source_url'])); | |
| if (isset($attachment['source_credit'])) | |
| update_post_meta($post['ID'], 'source_credit', trim($attachment['source_credit'])); | |
| return $post; | |
| } | |
| add_filter('img_caption_shortcode', 'caption_shortcode_with_credits', 10, 3); | |
| function caption_shortcode_with_credits($empty, $attr, $content) { | |
| extract (shortcode_atts( array( | |
| 'id' => '', | |
| 'align' => 'alignnone', | |
| 'width' => '', | |
| 'caption' => '', | |
| 'class' => '', | |
| ), $attr, 'caption' )); | |
| // Extract attachment $post->ID | |
| preg_match('/\d+/', $id, $att_id); | |
| if (is_numeric($att_id[0]) && $source_url = get_post_meta($att_id[0], 'source_url', true)) { | |
| if ( $source_credit = get_post_meta( $att_id[0], 'source_credit', true ) ) { | |
| $caption .= sprintf( | |
| ' <br />Photo by: <a class="source-credit" href="%s" target="_blank" rel="noopener">%s</a>', | |
| esc_url( $source_url ), | |
| esc_html( $source_credit ) | |
| ); | |
| } | |
| else { | |
| $caption = '<a href="'. esc_url ( $source_url ) .'">'. $caption .'</a>'; | |
| } | |
| } | |
| if ( 1 > (int) $width || empty($caption) ) | |
| return $content; | |
| if ( $id ) | |
| $id = 'id="' . esc_attr($id) . '" '; | |
| return '<div ' . $id . 'class="wp-caption ' . esc_attr($align) . '" style="width: ' . (10 + (int) $width) . 'px">' | |
| . do_shortcode( $content ) . '<p class="wp-caption-text">' . $caption . '</p></div>'; | |
| } |
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| <?php | |
| add_filter("attachment_fields_to_edit", "add_image_source_url", 10, 2); | |
| function add_image_source_url($form_fields, $post) { | |
| $form_fields["source_url"] = array( | |
| "label" => __("Source URL"), | |
| "input" => "text", | |
| "value" => get_post_meta($post->ID, "source_url", true), | |
| "helps" => __("Add the URL where the original image was posted"), | |
| ); | |
| $form_fields["source_credit"] = array( | |
| "label" => __("Source Credits"), | |
| "input" => "text", | |
| "value" => get_post_meta($post->ID, "source_credit", true), | |
| "helps" => __("If you add credits, those will be linked instead of the whole caption."), | |
| ); | |
| return $form_fields; | |
| } | |
| add_filter("attachment_fields_to_save", "save_image_source_url", 10 , 2); | |
| function save_image_source_url($post, $attachment) { | |
| $old_url = get_post_meta( $post['ID'], 'source_url', true ); | |
| $old_credit = get_post_meta( $post['ID'], 'source_credit', true ); | |
| $source_url = isset( $attachment['source_url'] ) ? $attachment['source_url'] : ''; | |
| $source_credit = isset( $attachment['source_credit'] ) ? $attachment['source_credit'] : ''; | |
| if ( $source_url && $source_url != $old_url ) { | |
| update_post_meta( $post['ID'], 'source_url', esc_url_raw( $source_url ) ); | |
| } elseif ( $old_url ) { | |
| delete_post_meta( $post['ID'], 'source_url' ); | |
| } | |
| if ( $source_credit && $source_credit != $old_credit ) { | |
| update_post_meta( $post['ID'], 'source_credit', sanitize_text_field( $source_credit ) ); | |
| } elseif ( $old_credit ) { | |
| delete_post_meta( $post['ID'], 'source_credit' ); | |
| } | |
| return $post; | |
| } | |
| add_filter('img_caption_shortcode', 'caption_shortcode_with_credits', 10, 3); | |
| function caption_shortcode_with_credits($empty, $attr, $content) { | |
| extract (shortcode_atts( array( | |
| 'id' => '', | |
| 'align' => 'alignnone', | |
| 'width' => '', | |
| 'caption' => '', | |
| 'class' => '', | |
| ), $attr, 'caption' )); | |
| // Extract attachment $post->ID | |
| preg_match('/\d+/', $id, $att_id); | |
| if (is_numeric($att_id[0]) && $source_url = get_post_meta($att_id[0], 'source_url', true)) { | |
| if ( $source_credit = get_post_meta( $att_id[0], 'source_credit', true ) ) { | |
| $caption .= sprintf( | |
| ' <br />Photo by: <a class="source-credit" href="%s" target="_blank" rel="noopener">%s</a>', | |
| esc_url( $source_url ), | |
| esc_html( $source_credit ) | |
| ); | |
| } | |
| else { | |
| $caption = '<a href="'. esc_url ( $source_url ) .'">'. $caption .'</a>'; | |
| } | |
| } | |
| if ( 1 > (int) $width || empty($caption) ) | |
| return $content; | |
| if ( $id ) | |
| $id = 'id="' . esc_attr($id) . '" '; | |
| return '<div ' . $id . 'class="wp-caption ' . esc_attr($align) . '" style="width: ' . (10 + (int) $width) . 'px">' | |
| . do_shortcode( $content ) . '<p class="wp-caption-text">' . $caption . '</p></div>'; | |
| } |
New version:
add_filter( 'attachment_fields_to_edit', 'markmcl_attachment_fields_edit', 10, 2 );
function markmcl_attachment_fields_edit( $fields, $post ) {
$fields['source_url'] = [
'label' => __( 'Source URL' ),
'input' => 'text',
'value' => esc_attr( get_post_meta( $post->ID, 'source_url', true ) ),
'helps' => __( 'Add the URL where the original image was posted.' )
];
$fields['source_credit'] = [
'label' => __( 'Source Credit' ),
'input' => 'text',
'value' => esc_attr( get_post_meta( $post->ID, 'source_credit', true ) ),
'helps' => __( 'If you add credits, those will be lined instead of the whole caption.' )
];
return $fields;
}
add_filter( 'attachment_fields_to_save', 'markmcl_attachment_fields_save', 10, 2 );
function markmcl_attachment_fields_save( $post, $attachment ) {
$old_url = get_post_meta( $post['ID'], 'source_url', true );
$old_credit = get_post_meta( $post['ID'], 'source_credit', true );
$source_url = isset( $attachment['source_url'] ) ? $attachment['source_url'] : '';
$source_credit = isset( $attachment['source_credit'] ) ? $attachment['source_credit'] : '';
if ( $source_url && $source_url != $old_url ) {
update_post_meta( $post['ID'], 'source_url', esc_url_raw( $source_url ) );
} elseif ( ! $source_url && $old_url ) {
delete_post_meta( $post['ID'], 'source_url' );
}
if ( $source_credit && $source_credit != $old_credit ) {
update_post_meta( $post['ID'], 'source_credit', sanitize_text_field( $source_credit ) );
} elseif ( ! $source_credit && $old_credit ) {
delete_post_meta( $post['ID'], 'source_credit' );
}
return $post;
}
add_filter( 'img_caption_shortcode', 'markmcl_img_caption', 10, 3 );
function markmcl_img_caption( $output, $attr, $content ) {
extract( shortcode_atts( [
'id' => '',
'align' => 'alignnone',
'width' => '',
'caption' => '',
'class' => '',
], $attr, 'caption' ) );
// Extract attachment $post->ID
preg_match( '/\d+/', $id, $att_id );
if ( is_numeric( $att_id[0] ) ) {
$source_url = get_post_meta( $att_id[0], 'source_url', true );
$source_credit = get_post_meta( $att_id[0], 'source_credit', true );
// If we have both a URL and text.
if ( $source_url && $source_credit ) {
$caption .= sprintf(
' <br />Photo by: <a class="source-credit" href="%s" target="_blank" rel="noopener">%s</a>',
esc_url( $source_url ),
esc_html( $source_credit )
);
// If we don't have a URL but do have text.
} elseif ( ! $source_url && $source_credit ) {
$caption .= sprintf(
' <br />Photo by: <span class="source-credit">%s</span>',
esc_html( $source_credit )
);
// If we do have a URL but don't have text.
} elseif ( $source_url && ! $source_credit ) {
$caption = sprintf(
'<a class="source-credit" href="%s" target="_blank" rel="noopener">%s</a>',
esc_url( $source_url ),
$caption
);
}
}
if ( 1 > (int) $width || empty( $caption ) ) {
return $content;
}
return sprintf(
'<div class="wp-caption %s" style="width: %spx;" %s>%s<p class="wp-caption-text">%s</p></div>',
esc_attr( $align ),
esc_attr( 10 + absint( $width ) ),
$id ? 'id="' . esc_attr( $id ) . '"' : '',
do_shortcode( $content ),
$caption
);
}
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Cleaned up and working code that will also allow deletion: