আমি শিল্পী সম্পর্কে তথ্য এবং মিডিয়া ফাইলগুলিতে একটি URL যুক্ত করতে খুব রুক্ষ প্লাগইন ব্যবহার করি । এটির জন্য কিছু টুইট করা দরকার (এবং আমার সময় প্রয়োজন) তবে এটি কার্যকর হয় এবং কীভাবে অতিরিক্ত ক্ষেত্র যুক্ত করতে পারে এবং কীভাবে সেগুলি আপনার থিমে ব্যবহার করতে হয় তা প্রদর্শন করতে পারে:
<?php
/*
Plugin Name: Media Artist Field
Description: Adds two field to attachments – Artist and Artist URL – and adds this information to captions.
Version: 0.1
Author: Fuxia Scholz
Created: 19.09.2010
*/
$Media_Artist = new Media_Artist(
array (
'artist_name' => array (
'public' => 'artist_name'
, 'hidden' => '_artist_name'
, 'label' => 'Fotograf (Name)'
)
, 'artist_url' => array (
'public' => 'artist_url'
, 'hidden' => '_artist_url'
, 'label' => 'Fotograf (URL)'
)
)
, 'Foto: '
);
/**
* Adds two fields for credits to any media file: name and URL.
*
* Based on the clear tutorial by Andy Blackwell:
* @link http://net.tutsplus.com/?p=13076
*/
class Media_Artist
{
public
$fields = array (
'artist_name' => array (
'public' => 'artist_name'
, 'hidden' => '_artist_name'
, 'label' => 'Artist Name'
)
, 'artist_url' => array (
'public' => 'artist_url'
, 'hidden' => '_artist_url'
, 'label' => 'Artist URL'
)
)
// Maybe its own field?
, $caption_prefix
, $br_before = TRUE;
public function __construct(
$fields = array()
, $caption_prefix = 'Source: '
, $br_before = TRUE
)
{
$this->fields = array_merge($this->fields, $fields);
$this->caption_prefix = $caption_prefix;
$this->br_before = (bool) $br_before;
$this->set_filter();
}
public function set_filter()
{
add_filter(
'attachment_fields_to_edit'
, array ( $this, 'add_fields' )
, 15
, 2
);
add_filter(
'attachment_fields_to_save'
, array ( $this, 'save_fields' )
, 10
, 2
);
add_filter(
'img_caption_shortcode'
, array ( $this, 'caption_filter' )
, 1
, 3
);
}
public function add_fields($form_fields, $post)
{
foreach ( $this->fields as $field)
{
$form_fields[ $field['public'] ]['label'] = $field['label'];
$form_fields[ $field['public'] ]['input'] = 'text';
$form_fields[ $field['public'] ]['value'] = get_post_meta(
$post->ID
, $field['hidden']
, TRUE
);
}
return $form_fields;
}
public function save_fields($post, $attachment)
{
foreach ( $this->fields as $field)
{
if ( isset ( $attachment[ $field['public'] ]) )
{
update_post_meta(
$post['ID']
, $field['hidden']
, $attachment[ $field['public'] ]
);
}
}
return $post;
}
public function caption_filter($empty, $attr, $content = '')
{
/* Typical input:
* [caption id="attachment_525" align="aligncenter"
* width="300" caption="The caption."]
* <a href="http://example.com/2008/images-test/albeo-screengrab/"
* rel="attachment wp-att-525"><img
* src="http://example.com/uploads/2010/08/albeo-screengrab4.jpg?w=300"
* alt="" title="albeo-screengrab" width="300" height="276"
* class="size-medium wp-image-525" /></a>[/caption]
*/
extract(
shortcode_atts(
array (
'id' => ''
, 'align' => 'alignnone'
, 'width' => ''
, 'caption' => ''
, 'nocredits' => '0'
)
, $attr
)
);
// Let WP handle these cases.
if ( empty ($id ) or 1 == $nocredits )
{
return '';
}
if ( 1 > (int) $width || empty ( $caption ) )
{
return $content;
}
if ( ! empty ( $id ) )
{
// Example: attachment_525
$html_id = 'id="' . esc_attr($id) . '" ';
$tmp = explode('_', $id);
$id = end($tmp);
$sub_caption = '';
$artist_name = get_post_meta($id, $this->fields['artist_name']['hidden'], TRUE);
$artist_url = get_post_meta($id, $this->fields['artist_url']['hidden'], TRUE);
// Okay, at least one value.
if ( '' != $artist_name . $artist_url )
{
$sub_caption .= $this->br_before ? '<br />' : '';
$sub_caption .= '<span class="media-artist">' . $this->caption_prefix;
// No name given. We use the shortened URL.
if ( '' == $artist_name )
{
$sub_caption .= '<a rel="author" href="'
. $artist_url . '">'
. $this->short_url($artist_url)
. '</a>';
} // We have just the name.
elseif ( '' == $artist_url )
{
$sub_caption .= $artist_name;
} // We have both.
else
{
$sub_caption .= '<a rel="author" href="'
. $artist_url . '">'
. $artist_name
. '</a>';
}
$sub_caption .= '</span>';
}
$caption .= $sub_caption;
}
return '<div ' . $html_id . 'class="wp-caption ' . esc_attr($align)
. '" style="width: ' . (10 + (int) $width) . 'px">'
. do_shortcode( $content ) . '<p class="wp-caption-text">'
. $caption . '</p></div>';
}
public function short_url($url, $max_length=20)
{
$real_length = mb_strlen($url, 'UTF-8');
if ( $real_length <= $max_length )
{
return $url;
}
$keep = round( $max_length / 2 ) - 1;
return mb_substr($url, 0, $keep, 'UTF-8') . '…'
. mb_substr($url, -$keep, $real_length, 'UTF-8');
}
# @todo uninstall
}