WordPress 教程：分类及分类下的文章添加模板选择功能

本人一直在用一个分类和文章模板选择器的，不记得是从哪里弄来的，就想拿出来分享一下。利用这个模板选择器你可以给每个分类和其下的文章指定模板，非常方便，制作模板也很简单，只要加上注释代码即可。下面是图片：

要实现此功能, 你需要在你的主题根目录文件夹下新建一个 template.php, 并将下面的代码复制进去 (或者直接下载此文件：

template.zip

)：

```
<?php
```
```
function cat_temp_menus() {
```

	add_menu_page('模板选择器', '模板选择器', 'manage_options', basename(__FILE__), 'cat_temp_options_page');

```
}
```
```
function cat_temp_meta() {
```
```
	global $wpdb,$post_ID;
```

	$templates = cat_temp_get_page_templates();

	$current = cat_temp_post_template($post_ID);

	$out = '<select name="cat_temp_template" style="width:100%">';

```
	$out .= '<option value="none"';
```

	if ($post_ID == 0 ||!$current) $out .= ' selected="selected"';

```
	$out .= '> 请选择</option>';
```
```
	$out .= '<option value="/single.php"';
```

	if ($current == "/single.php") $out .= ' selected="selected"';

```
	$out .= '> 默认模板</option>';
```

	foreach ($templates as $template =>$file) {

```
		$out .= '<option value="'.$file.'"';
```

		if ($current == $file) $out .= ' selected="selected"';

```
		$out .= '>'.$template.'</option>';
```
```
	}
```
```
	$out .= "</select>";
```
```
	$out .= "<p> 选择文章模板</p>";
```
```
	echo $out;
```
```
}
```

function cat_temp_post_submit($post_ID) {

```
	global $wpdb;
```
```
	if ($_POST['cat_temp_template']) {
```

		$templates =  (get_option("cat_temp_post"));

		if ($_POST['cat_temp_template'] != 'none') {

			$templates[$post_ID] = $_POST['cat_temp_template'];

```
		}else {
```
```
			if ($templates[$post_ID]) {
```
```
				unset($templates[$post_ID]);
```
```
			}
```
```
		}
```

		update_option("cat_temp_post",($templates));

```
	}
```
```
}
```
```
function cat_temp_post_template($ID) {
```

	$templates =  (get_option("cat_temp_post"));

```
	return $templates[$ID];
```
```
}
```
```
function cat_temp($template) {
```
```
	global $wp_query;
```

	$post_obj = $wp_query->get_queried_object();

```
	if (is_single()) {
```
```
		$data = cat_temp_get_data();
```

		$categories = get_the_category($post_obj->ID);

```
	}else if (is_category()) {
```
```
		$data = cat_temp_get_data(true);
```

		$categories[0] = &get_category($post_obj->cat_ID);

```
	}
```
```
	$temp_data;
```

	foreach((array)$categories as $category) {

		if ($data[$category->term_id]['template'] != '0') {

			$temp_data[$data[$category->term_id]['template']] = $data[$category->term_id]['priority']+($category->term_id/80000);

```
		}
```
```
	}
```
```
	foreach((array)$data as $key =>$cat) {
```

		if ($cat['all'] == "all"&&$cat['template'] != "0") {

			$id = (is_single()) ?(int)$cat['id'] : $key;

			$descendants = get_term_children($id,'category');

			if ($descendants &&in_category($descendants)) {

				$temp_data[$cat['template']] = $cat['priority']+($cat['id']/80000);

```
			}
```
```
		}
```
```
	}
```
```
	if (is_array($temp_data)) {
```
```
		asort($temp_data);
```

		$template = array_shift(array_keys($temp_data));

```
	}
```
```
	if (is_single()) {
```

		$overRule = cat_temp_post_template($post_obj->ID);

```
		if ($overRule) $template = $overRule;
```
```
	}
```
```
	if (!empty($template)) {
```

		if (file_exists(TEMPLATEPATH.$template)) {

```
			include(TEMPLATEPATH.$template);
```
```
			exit;
```
```
		}
```
```
	}
```
```
}
```

function cat_temp_is_cat($cat,$_post = null) {

```
	if (in_category($cat,$_post)) {
```
```
		return true;
```
```
	}else {
```

		$descendants = get_term_children((int)$cat,'category');

		if ($descendants &&in_category($descendants,$_post)) return true;

```
	}
```
```
	return false;
```
```
}
```

function cat_temp_get_page_templates($str = "Template Name") {

```
	$themes = get_themes();
```
```
	$theme = get_current_theme();
```

	$templates = $themes[$theme]['Template Files'];

```
	$page_templates = array();
```
```
	if (is_array($templates)) {
```

		foreach((array)$templates as $template) {

			if (!file_exists($template)) $template = WP_CONTENT_DIR.$template;

			$template_data = implode('',file($template));

```
			$name = '';
```

			if (preg_match('|'.$str.':(.*)$|mi',$template_data,$name))

```
				$name = $name[1];
```
```
			if (!empty($name)) {
```

				$page_templates[trim($name)] = str_replace($themes[$theme]['Template Dir'],"",$template);

```
			}
```
```
		}
```
```
	}
```
```
	return $page_templates;
```
```
}
```

function cat_temp_cats($item,$current,$archive=false) {

```
	if ($archive) {
```

		$templates = cat_temp_get_page_templates('Archive Template');

```
		$default = '/archive.php';
```
```
	}else {
```

		$templates = cat_temp_get_page_templates();

```
		$default = '/single.php';
```
```
	}
```

	$out = '<select title="Template"  name="data';

```
	if ($archive) $out .= '[archive]';
```
```
	$out .= '['.$item.'][template]">';
```
```
	$out .= '<option value="0"';
```

	if ($current == "0") $out .= ' selected="selected"';

```
	$out .= '> 未指定</option>';
```

	$out .= '<option value="'.$default.'"';

	if ($current == $default) $out .= ' selected="selected"';

```
	$out .= '> 默认模板</option>';
```

	foreach ($templates as $template =>$file) {

```
		$out .= '<option value="'.$file.'"';
```

		if ($current == $file) $out .= ' selected="selected"';

```
		$out .= '>'.$template.'</option>';
```
```
	}
```
```
	$out .= "</select>";
```
```
	return $out;
```
```
}
```

function cat_temp_categories($child = 0) {

```
	$data = array(
```
```
		"hide_empty"=>false,
```
```
		"child_of"=>$child,
```
```
		"pad_count"=>false,
```
```
		);
```
```
	$categories = get_categories($data);
```
```
	$list = array();
```
```
	foreach ((array)$categories as $cat) {
```
```
		if ($cat->parent == $child) {
```
```
			$list[] = array(
```
```
				"name"=>$cat->name,
```
```
				"id"=>$cat->cat_ID,
```

				"count"=>cat_temp_getALLposts($cat->cat_ID),

```
				"acount"=>$cat->category_count,
```

				"child"=>cat_temp_categories($cat->cat_ID),

```
				);
```
```
		}
```
```
	}
```
```
	return $list;
```
```
}
```
```
function cat_temp_li_fun($data) {
```
```
	$out = "<ul class="cat-temp">";
```
```
	foreach ((array)$data as $root) {
```

		$out .= "<li>".$root['name']." (".$root['count'].")</li>";

```
		if (count($root['child']) >0) {
```

			$out .= cat_temp_li_fun($root['child']);

```
		}
```
```
	}
```
```
	$out .= "</ul>";
```
```
	return $out;
```
```
}
```

function cat_temp_priority($item,$current,$archive) {

	$pri = array("最低","低","中等","高","最高");

	$out = '<select  title="Template Priority" name="data';

```
	if ($archive) $out .= '[archive]';
```
```
	$out .= '['.$item.'][priority]">';
```
```
	$t = 0;
```
```
	for ($i = 10;$i >= 1;$i = $i-2) {
```
```
		$out .= '<option value="'.$i.'"';
```

		if (intval($current) == $i) $out .= ' selected="selected"';

```
		$out .= '>'.$pri[$t].'</option>';
```
```
		$t++;
```
```
	}
```
```
	$out .= "</select>";
```
```
	return $out;
```
```
}
```
```
function cat_temp_getALLposts($ID) {
```
```
	$td = array(
```
```
		'numberposts'=>-1,
```
```
		'category'=>$ID,
```
```
		);
```
```
	return count(get_posts($td));
```
```
}
```

function cat_temp_get_data($archive=false,$id=false) {

	$t = (!$archive) ?(get_option('cat_temp_data')) :  (get_option('cat_arch_data'));

```
	return (!$id) ?$t : $t[$id];
```
```
}
```
```
function cat_temp_update($data) {
```
```
	$archive = $data['archive'];
```
```
	unset($data['archive']);
```

	update_option('cat_temp_data',($data));

	update_option('cat_arch_data',($archive));

```
}
```
```
function cat_temp_delete() {
```
```
	delete_option('cat_temp_data');
```
```
	delete_option('cat_temp_post');
```
```
	delete_option('cat_arch_data');
```
```
}
```

function cat_temp_sub_cats($id,$data,$archive=false) {

```
	$out .= ' <input type="checkbox"';
```

	if ($data == "all") $out .= ' checked="checked"';

```
	$out .= ' name="data';
```
```
	if ($archive) $out .= "[archive]";
```

	$out .= '['.$id.'][all]" value="all" title="Apply to sub-categories" /> <small> 用于子分类</small>';

```
	return $out;
```
```
}
```

function cat_temp_templates($id,$archive) {

```
	if ($archive) {
```
```
		$title = "分类";
```
```
		$class = " class="noborder"";
```
```
		$class2 = " noborder";
```
```
	}else {
```
```
		$title = "文章";
```
```
	}
```

	$data = cat_temp_get_data($archive,$id);

	$out .= "<td class="r$class2" >$title:</td>";

	$out .= "<td $class><div>".cat_temp_cats($id,$data['template'],$archive);

	$out .= cat_temp_sub_cats($id,$data['all'],$archive).'</div></td>';

	$out .= "<td $class><div>".cat_temp_priority($id,$data['priority'],$archive)."</div></td>";

```
	return $out;
```
```
}
```

function cat_temp_td_fun($data,$padding = 5) {

```
	$out = "";
```
```
	foreach ((array)$data as $root) {
```
```
		$out .= '<tr>';
```

		$out .= '<td  rowspan="2">'.$root['id'];

		$out .= '<input type="hidden" name="data['.$root['id'].'][id]" value="'.$root['id'].'" />';

```
		$out .= '</td>';
```

		$out .= '<td  style="padding-left:'.$padding.'px;" rowspan="2">'.$root['name'].'</td>';

		$out .= cat_temp_templates($root['id'],true);

		$out .= '<td rowspan="2">'.$root['acount'].' ('.$root['count'].')</td>';

```
		$out .= "</tr><tr>";
```

		$out .= cat_temp_templates($root['id'],false);

```
		$out .= '</tr>';
```
```
		if (count($root['child']) >0) {
```

			$out .= cat_temp_td_fun($root['child'],$padding+10);

```
		}
```
```
	}
```
```
	return $out;
```
```
}
```
```
function cat_temp_options_page() {
```
```
	$_GET['lang'] = 'all';
```
```
	;echo '
```
```
	<div >
```
```
		<div  id="icon-themes"><br/>
```
```
		</div>
```
```
		<h2> 模板选择器</h2>
```
```
		';
```
```
		if ($_POST['update_theme']) {
```
```
			cat_temp_update($_POST['data']);
```

			echo '<div id="message" ><p> 成功保存.</p></div>';

```
		}
```

		;echo '  <p> 请选择分类和页面模板</p>

		<form method="post" action="';echo $_SERVER['PHP_SELF']."?".$_SERVER['QUERY_STRING'];;echo '">

```
			';
```

			if(function_exists('settings_fields')){

				settings_fields('cat-temp-options');

```
			}else {
```
```
				wp_nonce_field('update-options');
```

				;echo '    <input type="hidden" name="action" value="update" />

```
				';
```
```
			}
```
```
			;echo '    <table>
```
```
			<tr>
```

				<td style="vertical-align:top" width="70%"><table width="100%"  id="cat_temps">

```
					<thead>
```
```
						<tr>
```
```
							<th width="2%" >ID</th>
```
```
							<th> 分类</th>
```
```
							<th colspan="2"> 模板</th>
```
```
							<th width="4%"> 等级</th>
```
```
							<th> 文章数</th>
```
```
						</tr>
```
```
					</thead>
```
```
					<tbody>
```

						';echo cat_temp_td_fun(cat_temp_categories());;echo '            </tbody>

```
					</table></td>
```

					<td style="vertical-align:top"><table width="100%" >

```
						<thead>
```
```
							<tr>
```
```
								<th> 说明</th>
```
```
							</tr>
```
```
							<tr>
```

								<td> 按照以下说明制作模板:</td>

```
							</tr>
```
```
							<tr>
```
```
								<td>
```
```
									分类模板:
```

WordPress 教程：分类及分类下的文章添加模板选择功能

WordPress 教程：分类及分类下的文章添加模板选择功能

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