我想做的是添加一个新的列来编辑文章页面（完成），并在该列中显示从一组自定义字段中获取的数据（部分完成）。
这是我的代码（我将其用作插件，以便更简单地修改它）。它在帖子中添加了元框，因此我可以轻松添加自定义字段。
<?php
// the plugin base directory
global $maismeta_base_dir;
$maismeta_base_dir = plugin_dir_url(__FILE__);
// Add the Meta Box
function add_custom_meta_box() {
add_meta_box(
\'custom_meta_box\', // $id
\'Impostazioni di ricerca\', // $title
\'show_custom_meta_box\', // $callback
\'post\', // $page
\'normal\', // $context
\'high\'); // $priority
}
add_action(\'add_meta_boxes\', \'add_custom_meta_box\');
// Field Array
$prefix = \'custom_\';
$custom_meta_fields = array(
array (
\'label\' => __(\'Proprietario\',\'maismeta\'),
\'desc\' => __(\'Inserisci le informazioni sul proprietario.\',\'maismeta\'),
\'id\' => $prefix.\'textarea_proprietario\',
\'type\' => \'textarea\',
),
array (
\'label\' => __(\'Sesso affittuario\',\'maismeta\'),
\'desc\' => __(\'Inserisci il sesso disponibile.\',\'maismeta\'),
\'id\' => $prefix.\'checkbox_group_sesso\',
\'type\' => \'checkbox_group\',
\'options\' => array (
\'Uomo\' => array (
\'label\' => __(\'Uomo\',\'maismeta\'),
\'value\' => \'Uomo\'
),
\'Donna\' => array (
\'label\' => __(\'Donna\',\'maismeta\'),
\'value\' => \'Donna\'
),
\'Altro\' => array (
\'label\' => __(\'Altro\',\'maismeta\'),
\'value\' => \'Altro\'
)
)
),
array (
\'label\' => __(\'Numero occupanti\',\'maismeta\'),
\'desc\' => __(\'Inserisci il numero degli occupanti.\',\'maismeta\'),
\'id\' => $prefix.\'checkbox_group_occupanti\',
\'type\' => \'checkbox_group\',
\'options\' => array (
\'1\' => array (
\'label\' => __(\'1\',\'maismeta\'),
\'value\' => \'1\'
),
\'2\' => array (
\'label\' => __(\'2\',\'maismeta\'),
\'value\' => \'2\'
),
\'3\' => array (
\'label\' => __(\'3\',\'maismeta\'),
\'value\' => \'3\'
),
\'4\' => array (
\'label\' => __(\'4\',\'maismeta\'),
\'value\' => \'4\'
),
\'5\' => array (
\'label\' => __(\'5\',\'maismeta\'),
\'value\' => \'5\'
),
\'6\' => array (
\'label\' => __(\'6\',\'maismeta\'),
\'value\' => \'6\'
),
\'7\' => array (
\'label\' => __(\'7\',\'maismeta\'),
\'value\' => \'7\'
),
\'8\' => array (
\'label\' => __(\'8\',\'maismeta\'),
\'value\' => \'8\'
),
)
),
array (
\'label\' => __(\'Facoltà di riferimento\',\'maismeta\'),
\'desc\' => __(\'Scegli le facoltà di riferimento.\',\'maismeta\'),
\'id\' => $prefix.\'checkbox_group_facolta\',
\'type\' => \'checkbox_group\',
\'options\' => array (
\'Agraria\' => array (
\'label\' => __(\'Agraria\',\'maismeta\'),
\'value\' => \'Agraria\'
),
\'Economia\' => array (
\'label\' => __(\'Economia\',\'maismeta\'),
\'value\' => \'Economia\'
),
\'Farmacia\' => array (
\'label\' => __(\'Farmacia\',\'maismeta\'),
\'value\' => \'Farmacia\'
),
\'Giurisprudenza\' => array (
\'label\' => __(\'Giurisprudenza\',\'maismeta\'),
\'value\' => \'Giurisprudenza\'
),
\'Ingegneriea\' => array (
\'label\' => __(\'Ingegneriea\',\'maismeta\'),
\'value\' => \'Ingegneriea\'
),
\'Lettere e Filosofia\' => array (
\'label\' => __(\'Lettere e Filosofia\',\'maismeta\'),
\'value\' => \'Lettere e Filosofia\'
),
\'Lingue e letteratura straniera\' => array (
\'label\' => __(\'Lingue e letteratura straniera\',\'maismeta\'),
\'value\' => \'Lingue e letteratura straniera\'
),
\'Medicina e chirurgia\' => array (
\'label\' => __(\'Medicina e chirurgia\',\'maismeta\'),
\'value\' => \'Medicina e chirurgia\'
),
\'Scienze della formazione\' => array (
\'label\' => __(\'Scienze della formazione\',\'maismeta\'),
\'value\' => \'Scienze della formazione\'
),
\'Scienze matematiche fisiche e naturali\' => array (
\'label\' => __(\'Scienze matematiche fisiche e naturali\',\'maismeta\'),
\'value\' => \'Scienze matematiche fisiche e naturali\'
),
\'Scienze politiche\' => array (
\'label\' => __(\'Scienze politiche\',\'maismeta\'),
\'value\' => \'Scienze politiche\'
)
)
),
);
/* jQuery era qui */
// The Callback
function show_custom_meta_box() {
global $custom_meta_fields, $post;
// Use nonce for verification
echo \'<input type="hidden" name="custom_meta_box_nonce" value="\'.wp_create_nonce(basename(__FILE__)).\'" />\';
// Begin the field table and loop
echo \'<table class="form-table">\';
foreach ($custom_meta_fields as $field) {
// get value of this field if it exists for this post
$meta = get_post_meta($post->ID, $field[\'id\'], true);
// begin a table row with
echo \'<tr>
<th><label for="\'.$field[\'id\'].\'">\'.$field[\'label\'].\'</label></th>
<td>\';
switch($field[\'type\']) {
// text
case \'text\':
echo \'<input type="text" name="\'.$field[\'id\'].\'" id="\'.$field[\'id\'].\'" value="\'.$meta.\'" size="30" />
<br /><span class="description">\'.$field[\'desc\'].\'</span>\';
break;
// textarea
case \'textarea\':
echo \'<textarea name="\'.$field[\'id\'].\'" id="\'.$field[\'id\'].\'" cols="60" rows="4">\'.$meta.\'</textarea>
<br /><span class="description">\'.$field[\'desc\'].\'</span>\';
break;
// checkbox
case \'checkbox\':
echo \'<input type="checkbox" name="\'.$field[\'id\'].\'" id="\'.$field[\'id\'].\'" \',$meta ? \' checked="checked"\' : \'\',\'/>
<label for="\'.$field[\'id\'].\'">\'.$field[\'desc\'].\'</label>\';
break;
// select
case \'select\':
echo \'<select name="\'.$field[\'id\'].\'" id="\'.$field[\'id\'].\'">\';
foreach ($field[\'options\'] as $option) {
echo \'<option\', $meta == $option[\'value\'] ? \' selected="selected"\' : \'\', \' value="\'.$option[\'value\'].\'">\'.$option[\'label\'].\'</option>\';
}
echo \'</select><br /><span class="description">\'.$field[\'desc\'].\'</span>\';
break;
// radio
case \'radio\':
foreach ( $field[\'options\'] as $option ) {
echo \'<input type="radio" name="\'.$field[\'id\'].\'" id="\'.$option[\'value\'].\'" value="\'.$option[\'value\'].\'" \',$meta == $option[\'value\'] ? \' checked="checked"\' : \'\',\' />
<label for="\'.$option[\'value\'].\'">\'.$option[\'label\'].\'</label><br />\';
}
echo \'<span class="description">\'.$field[\'desc\'].\'</span>\';
break;
// checkbox_group
case \'checkbox_group\':
foreach ($field[\'options\'] as $option) {
echo \'<input type="checkbox" value="\'.$option[\'value\'].\'" name="\'.$field[\'id\'].\'[]" id="\'.$option[\'value\'].\'"\',$meta && in_array($option[\'value\'], $meta) ? \' checked="checked"\' : \'\',\' />
<label for="\'.$option[\'value\'].\'">\'.$option[\'label\'].\'</label><br />\';
}
echo \'<span class="description">\'.$field[\'desc\'].\'</span>\';
break;
// tax_select
case \'tax_select\':
echo \'<select name="\'.$field[\'id\'].\'" id="\'.$field[\'id\'].\'">
<option value="">Select One</option>\'; // Select One
$terms = get_terms($field[\'id\'], \'get=all\');
$selected = wp_get_object_terms($post->ID, $field[\'id\']);
foreach ($terms as $term) {
if (!empty($selected) && !strcmp($term->slug, $selected[0]->slug))
echo \'<option value="\'.$term->slug.\'" selected="selected">\'.$term->name.\'</option>\';
else
echo \'<option value="\'.$term->slug.\'">\'.$term->name.\'</option>\';
}
$taxonomy = get_taxonomy($field[\'id\']);
echo \'</select><br /><span class="description"><a href="\'.get_bloginfo(\'home\').\'/wp-admin/edit-tags.php?taxonomy=\'.$field[\'id\'].\'">Manage \'.$taxonomy->label.\'</a></span>\';
break;
// post_list
case \'post_list\':
$items = get_posts( array (
\'post_type\' => $field[\'post_type\'],
\'posts_per_page\' => -1
));
echo \'<select name="\'.$field[\'id\'].\'" id="\'.$field[\'id\'].\'">
<option value="">Select One</option>\'; // Select One
foreach($items as $item) {
echo \'<option value="\'.$item->ID.\'"\',$meta == $item->ID ? \' selected="selected"\' : \'\',\'>\'.$item->post_type.\': \'.$item->post_title.\'</option>\';
} // end foreach
echo \'</select><br /><span class="description">\'.$field[\'desc\'].\'</span>\';
break;
// date
case \'date\':
echo \'<input type="text" class="datepicker" name="\'.$field[\'id\'].\'" id="\'.$field[\'id\'].\'" value="\'.$meta.\'" size="30" />
<br /><span class="description">\'.$field[\'desc\'].\'</span>\';
break;
// slider
case \'slider\':
$value = $meta != \'\' ? $meta : \'0\';
echo \'<div id="\'.$field[\'id\'].\'-slider"></div>
<input type="text" name="\'.$field[\'id\'].\'" id="\'.$field[\'id\'].\'" value="\'.$value.\'" size="5" />
<br /><span class="description">\'.$field[\'desc\'].\'</span>\';
break;
// image
global $secondazona;$secondazona = plugin_dir_url(__FILE__);
case \'image\':
$zonaimmi = $secondazona.\'images/image.png\';
echo \'<span class="custom_default_image" style="display:none">\'.$zonaimmi.\'</span>\';
if ($meta) { $zonaimmi = wp_get_attachment_image_src($meta, \'medium\'); $zonaimmi = $zonaimmi[0]; }
echo \'<input name="\'.$field[\'id\'].\'" type="hidden" class="custom_upload_image" value="\'.$meta.\'" />
<img src="\'.$zonaimmi.\'" class="custom_preview_image" alt="" /><br />
<input class="custom_upload_image_button button" type="button" value="Choose Image" />
<small> <a href="#" class="custom_clear_image_button">Remove Image</a></small>
<br clear="all" /><span class="description">\'.$field[\'desc\'].\'</span>\';
break;
// repeatable
case \'repeatable\':
echo \'<a class="repeatable-add button" href="#">+</a>
<ul id="\'.$field[\'id\'].\'-repeatable" class="custom_repeatable">\';
$i = 0;
if ($meta) {
foreach($meta as $row) {
echo \'<li><span class="sort hndle">|||</span>
<input type="text" name="\'.$field[\'id\'].\'[\'.$i.\']" id="\'.$field[\'id\'].\'" value="\'.$row.\'" size="30" />
<a class="repeatable-remove button" href="#">-</a></li>\';
$i++;
}
} else {
echo \'<li><span class="sort hndle">|||</span>
<input type="text" name="\'.$field[\'id\'].\'[\'.$i.\']" id="\'.$field[\'id\'].\'" value="" size="30" />
<a class="repeatable-remove button" href="#">-</a></li>\';
}
echo \'</ul>
<span class="description">\'.$field[\'desc\'].\'</span>\';
break;
} //end switch
echo \'</td></tr>\';
} // end foreach
echo \'</table>\'; // end table
}
function remove_taxonomy_boxes() {
remove_meta_box(\'categorydiv\', \'post\', \'side\');
}
add_action( \'admin_menu\' , \'remove_taxonomy_boxes\' );
// Save the Data
function save_custom_meta($post_id) {
global $custom_meta_fields;
// verify nonce
if (!wp_verify_nonce($_POST[\'custom_meta_box_nonce\'], basename(__FILE__)))
return $post_id;
// check autosave
if (defined(\'DOING_AUTOSAVE\') && DOING_AUTOSAVE)
return $post_id;
// check permissions
if (\'page\' == $_POST[\'post_type\']) {
if (!current_user_can(\'edit_page\', $post_id))
return $post_id;
} elseif (!current_user_can(\'edit_post\', $post_id)) {
return $post_id;
}
// loop through fields and save the data
foreach ($custom_meta_fields as $field) {
if($field[\'type\'] == \'tax_select\') continue;
$old = get_post_meta($post_id, $field[\'id\'], true);
$new = $_POST[$field[\'id\']];
if ($new && $new != $old) {
update_post_meta($post_id, $field[\'id\'], $new);
} elseif (\'\' == $new && $old) {
delete_post_meta($post_id, $field[\'id\'], $old);
}
} // enf foreach
// save taxonomies
$post = get_post($post_id);
$category = $_POST[\'category\'];
wp_set_object_terms( $post_id, $category, \'category\' );
}
add_action(\'save_post\', \'save_custom_meta\');
/* nuova posizione */
// enqueue scripts and styles, but only if is_admin
?>
如您所见，我有两组复选框，第一组有3个可能的值：
\'Uomo\',\'Donna\',\'Altro\'因此，用户可以轻松地选择1、2、3或所有值。
然后在我的编辑贴子页面中显示另外两个列：
// ALL POST TYPES: posts AND custom post types
add_filter(\'manage_posts_columns\', \'colonne_informative_head\');
add_action(\'manage_posts_custom_column\', \'colonna_proprietario\', 10, 2);
// ADD NEW COLUMN
function colonne_informative_head($defaults) {
$defaults[\'custom_textarea_proprietario\'] = \'Proprietario\';
$defaults[\'custom_checkbox_group_sesso\'] = \'Sesso occupanti\';
return $defaults;
};
// SHOW THE FEATURED IMAGE
function colonna_proprietario($column_name, $post_ID) {
if ($column_name == \'custom_textarea_proprietario\') {
$post_colonna_proprietario = get_post_meta($post_ID, \'custom_textarea_proprietario\', true);
if ($post_colonna_proprietario) {
echo $post_colonna_proprietario;
}
};
if ($column_name == \'custom_checkbox_group_sesso\') {
$sesso_occupanti = get_post_meta($post_ID, "custom_checkbox_group_sesso", true);
//check that we have a custom field
if ($sesso_occupanti != "")
{
// Separate our comma separated list into an array
$sesso_occupanti = explode(",", $sesso_occupanti);
//loop through our new array
foreach ($sesso_occupanti as $sesso)
{
echo $sesso ;
}
}
};
};
我对名为：
custom_textarea_proprietario 因为只回显1个值相对容易。
但我不知道如何呼应第二个冒号的值：custom_checkbox_group_sesso 事实上，它只是回声Array\' 没有别的了。如果打开Php my admin并查找我存储的数据，我可以看到：
a:3:{i:0;s:4:"Uomo";i:1;s:5:"Donna";i:2;s:14:"Giurisprudenza";}
在这种情况下，我想在我的专栏中回应的是：
然后再加上一个列：
我几乎是这方面的新手，所以请对我好一点，试着一步一步地解释。
