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Add metaboxes for customizing COinS data.
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@rjbaniel
rjbaniel committed Jun 7, 2016
1 parent fc32344 commit 9a7b1f2
Showing 1 changed file with 138 additions and 17 deletions.
155 changes: 138 additions & 17 deletions scholarpress-coins.php
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Original file line number Diff line number Diff line change
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Plugin Name: ScholarPress Coins
Plugin URI: http://www.scholarpress.net/coins/
Description: Makes your blog posts readable by various COinS interpreters.
Version: 1.3
Author: Sean Takats, Jeremy Boggs
Version: 2.0
Author: Sean Takats, Jeremy Boggs, Daniel Jones, Boone Gorges
Author URI: http://chnm.gmu.edu
This program is free software; you can redistribute it and/or modify
Expand All @@ -22,39 +22,160 @@
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/

$coins_postmeta_keys = array(
'_coins-title',
'_coins-source',
'_coins-date',
'_coins-identifier',
'_coins-author-first',
'_coins-author-last',
'_coins-subjects'
);

add_action( 'add_meta_boxes', 'scholarpress_coins_add_coins_meta_box' );

function scholarpress_coins_add_coins_meta_box() {
global $post;
$authordata = get_userdata( $post->post_author );

$default_coins_data = array();

$authorLast = $authordata->last_name;
$authorFirst = $authordata->first_name;
if ( ! empty( $authorLast ) && ! empty( $authorFirst ) ) {
$default_coins_data['_coins-author-last'] = $authorLast;
$default_coins_data['_coins-author-first'] = $authorFirst;
} else {
$default_coins_data['_coins-author-first'] = $authordata->display_name;
$default_coins_data['_coins-author-last'] = 'scholarpress_coins_empty';
}

$default_coins_data['_coins-subjects'] = array();
if ( $cats = get_the_category() ) {
foreach( $cats as $cat ) {
$default_coins_data['_coins-subjects'][] = $cat->cat_name;
}
}

$default_coins_data['_coins-title'] = $post->post_title;
$default_coins_data['_coins-source'] = get_bloginfo( 'name' );
$default_coins_data['_coins-date'] = get_the_time( 'Y-m-d' );
$default_coins_data['_coins-identifier'] = get_permalink( $post->ID );

add_meta_box(
'scholarpress-coins-meta-box',
'Bibliographic Information',
'scholarpress_coins_show_meta_box',
array( 'post', 'page' ),
'side',
'default',
$default_coins_data
);
}

function scholarpress_coins_show_meta_box( $post, $meta_box_args ) {
global $coins_postmeta_keys;
$default_coins_data = $meta_box_args['args'];
$coins_display_data = array();

foreach( $coins_postmeta_keys as $coins_postmeta_key ) {
if ( $coins_postmeta_key == '_coins-subjects' ) {
$saved_coins_subjects = get_post_meta( $post->ID, '_coins-subjects', true );

if ( !empty( $saved_coins_subjects ) && $saved_coins_subjects != 'scholarpress_coins_empty' ) {
$coins_display_data['_coins-subjects'] = implode( ', ', $saved_coins_subjects );
} elseif ( !empty( $default_coins_data['_coins-subjects'] ) ) {
$coins_display_data['_coins-subjects'] = implode( ', ', $default_coins_data['_coins-subjects'] );
} else {
$coins_display_data['_coins-subjects'] = '';
}

} else {
$coins_postmeta_value = get_post_meta( $post->ID, $coins_postmeta_key, true );

if ( !empty( $coins_postmeta_value ) ) {
if ( $coins_postmeta_value == 'scholarpress_coins_empty' ) {
$coins_display_data[$coins_postmeta_key] = '';
} else {
$coins_display_data[$coins_postmeta_key] = $coins_postmeta_value;
}
} else {
if ( $default_coins_data[$coins_postmeta_key] == 'scholarpress_coins_empty' ) {
$coins_display_data[$coins_postmeta_key] = '';
} else {
$coins_display_data[$coins_postmeta_key] = $default_coins_data[$coins_postmeta_key];
}
}
}
}

echo '<label for="coins-title">Title: </label><input class="widefat" id="coins-title" name="_coins-title" type="text" value="' . $coins_display_data['_coins-title'] . '">';
echo '<label for="coins-source">Source: </label><input class="widefat" id="coins-source" name="_coins-source" type="text" value="' . $coins_display_data['_coins-source'] . '">';
echo '<label for="coins-date">Date: </label><input class="widefat" id="coins-date" name="_coins-date" type="text" value="' . $coins_display_data['_coins-date'] . '">';
echo '<label for="coins-identifier">Identifier: </label><input class="widefat" id="coins-identifier" name="_coins-identifier" type="text" value="' . $coins_display_data['_coins-identifier'] . '">';
echo '<label for="coins-author-first">Author/Creator\'s first or given name: </label><input class="widefat" id="coins-author-first" name="_coins-author-first" type="text" value="' . $coins_display_data['_coins-author-first'] . '">';
echo '<label for="coins-author-first">Author/Creator\'s last or family name (if applicable): </label><input class="widefat" id="coins-author-last" name="_coins-author-last" type="text" value="' . $coins_display_data['_coins-author-last'] . '">';
echo '<label for="coins-subjects">Comma-sparated list of subjects: </label><input class="widefat" id="coins-subjects" name="_coins-subjects" type="text" value="' . $coins_display_data['_coins-subjects'] . '">';
}


add_action( 'save_post', 'scholarpress_coins_save_metadata' );

function scholarpress_coins_save_metadata( $post_id ) {
global $coins_postmeta_keys;
foreach( $_POST as $key => $value ) {
if ( in_array( $key, $coins_postmeta_keys) ) {
if ( $_POST[$key] == '' ) {
update_post_meta( $post_id, $key, 'scholarpress_coins_empty' );
} elseif ( $key == '_coins-subjects' ) {
$coins_subjects_string = str_replace( ', ', ',', $value );
$coins_subjects_array = explode( ',', $coins_subjects_string );
update_post_meta( $post_id, '_coins-subjects', $coins_subjects_array );
} else {
update_post_meta( $post_id, $key, $_POST[$key] );
}
}
}
}

add_filter('the_content', 'scholarpress_coins_add_coins_metadata');

function scholarpress_coins_add_coins_metadata($content)
{
global $post, $authordata;
global $post, $authordata, $coins_postmeta_keys;

$coins_display_postmeta = array();
foreach( $coins_postmeta_keys as $key ) {
$coins_display_postmeta[$key] = get_post_meta( $post->ID, $key, true );
if ( $coins_display_postmeta[$key] == 'scholarpress_coins_empty' ) {
$coins_display_postmeta[$key] = '';
}
}

$coinsTitle = 'ctx_ver=Z39.88-2004'
. '&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc'
. '&amp;rfr_id=info%3Asid%2Focoins.info%3Agenerator'
. '&amp;rft.type='
. '&amp;rft.format=text'
. '&amp;rft.title='.urlencode($post->post_title)
. '&amp;rft.source='.urlencode(get_bloginfo('name'))
. '&amp;rft.date='.get_the_time('Y-m-d')
. '&amp;rft.identifier='.urlencode(get_permalink($post->ID))
. '&amp;rft.title='. urlencode( $coins_display_postmeta['_coins-title'] )
. '&amp;rft.source='. urlencode( $coins_display_postmeta['_coins-source'] )
. '&amp;rft.date='. $coins_display_postmeta['_coins-date']
. '&amp;rft.identifier='. urlencode( $coins_display_postmeta['_coins-identifier'] )
. '&amp;rft.language=English';

if ($cats = get_the_category()) {
foreach((get_the_category()) as $cat) {
$coinsTitle .= '&amp;rft.subject='.urlencode($cat->cat_name);
if ( !empty( $coins_display_postmeta['_coins-subjects'] ) && is_array( $coins_display_postmeta['_coins-subjects'] ) ) {
foreach( $coins_display_postmeta['_coins-subjects'] as $subject ) {
$coinsTitle .= '&amp;rft.subject='.urlencode( $subject );
}
}

$authorLast = $authordata->last_name;
$authorFirst = $authordata->first_name;

if (!empty($authorLast) && !empty($authorFirst)) {
if ( !empty( $coins_display_postmeta['_coins-author-last'] ) && !empty( $coins_display_postmeta['_coins-author-first'] ) ) {
$coinsTitle = $coinsTitle
. '&amp;rft.aulast='.urlencode($authorLast)
. '&amp;rft.aufirst='.urlencode($authorFirst);
. '&amp;rft.aulast='.urlencode( $coins_display_postmeta['_coins-author-last'] )
. '&amp;rft.aufirst='.urlencode( $coins_display_postmeta['_coins-author-first'] );
} else {
$coinsTitle = $coinsTitle
. '&amp;rft.au='.urlencode($authordata->display_name);
. '&amp;rft.au='.urlencode( $coins_display_postmeta['_coins-author-first'] );
}

$coinsTitle = apply_filters('scholarpress_coins_span_title', $coinsTitle);
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