php – WordPress – 带分类列表的主题选项页面

发布时间：2020-12-13 16:23:35 所属栏目：PHP教程来源：网络整理

导读：我正在尝试为我的主题创建一个选项页面,在选项页面上有一个显示所有类别名称的下拉列表,选项值作为类别的ID号,因此在下拉列表中,它显示所有类别名称,但是当您选择类别并在前端回显时,它会回显类别ID. 我现在的代码显示了类别名称列表,但也将名称回显到前端.

我正在尝试为我的主题创建一个选项页面,在选项页面上有一个显示所有类别名称的下拉列表,选项值作为类别的ID号,因此在下拉列表中,它显示所有类别名称,但是当您选择类别并在前端回显时,它会回显类别ID.

我现在的代码显示了类别名称列表,但也将名称回显到前端.我试图修改它的ID号,但我没有运气.

总而言之,在选项页面上,它需要在下拉列表中显示类别名称,但在前端它应该回显类别的ID号.

编辑：这是我用来创建选项页面的完整代码 – 这一切都在functions.php中：

<?php
$themename = "TGH 2012";
$shortname = "tgh";

$categories = get_categories('hide_empty=0&orderby=name');
    $wp_cats = array();

    foreach ($categories as $category_list ) {
           $wp_cats[$category_list->cat_id] = $category_list->cat_name;
    }

    array_unshift($wp_cats,"Choose a category");


global $options;
$options = array (

    array(  "name" => "Homepage Options","type" => "title"),array(  "type" => "open"),array(  "name" => "Pick Categories","desc" => "Choose a category from the list to do some interesting stuff.","id" => $shortname."_categories","type" => "select","options" => $wp_cats,"std" => ""),array(  "type" => "close")

);

function mytheme_add_admin() {

global $themename,$shortname,$options;

if ( $_GET['page'] == basename(__FILE__) ) {

    if ( 'save' == $_REQUEST['action'] ) {

            foreach ($options as $value) {
                update_option( $value['id'],$_REQUEST[ $value['id'] ] ); }

            foreach ($options as $value) {
                if( isset( $_REQUEST[ $value['id'] ] ) ) { update_option( $value['id'],$_REQUEST[ $value['id'] ]  ); } else { delete_option( $value['id'] ); } }

            header("Location: themes.php?page=functions.php&saved=true");
            die;

    } else if( 'reset' == $_REQUEST['action'] ) {

        foreach ($options as $value) {
            delete_option( $value['id'] ); }

        header("Location: themes.php?page=functions.php&reset=true");
        die;

    }
}

add_theme_page($themename." Options","".$themename." Options",'edit_themes',basename(__FILE__),'mytheme_admin');

    }

    function mytheme_admin() {

    global $themename,$options;

    if ( $_REQUEST['saved'] ) echo '<div id="message" class="updated fade"><p><strong>'.$themename.' settings saved.</strong></p></div>';
    if ( $_REQUEST['reset'] ) echo '<div id="message" class="updated fade"><p><strong>'.$themename.' settings reset.</strong></p></div>';

?>
<div class="wrap">
<h2><?php echo $themename; ?> settings</h2>
<form method="post">
  <?php foreach ($options as $value) { 

    switch ( $value['type'] ) {

        case "open":
        ?>
  <table width="100%" border="0" style="background-color:#eef5fb; padding:10px;">
    <?php break;

        case "close":
        ?>
  </table>
  <br />
  <?php break;

        case "title":
        ?>
  <table width="100%" border="0" style="background-color:#dceefc; padding:5px 10px;">
  <tr>
    <td colspan="2"><h3 style="font-family:Georgia,'Times New Roman',Times,serif;"><?php echo $value['name']; ?></h3></td>
  </tr>
  <?php break;

        case 'text':
        ?>
  <tr>
    <td width="20%" rowspan="2" valign="middle"><strong><?php echo $value['name']; ?></strong></td>
    <td width="80%"><input style="width:400px;" name="<?php echo $value['id']; ?>" id="<?php echo $value['id']; ?>" type="<?php echo $value['type']; ?>" value="<?php if ( get_settings( $value['id'] ) != "") { echo get_settings( $value['id'] ); } else { echo $value['std']; } ?>" /></td>
  </tr>
  <tr>
    <td><small><?php echo $value['desc']; ?></small></td>
  </tr>
  <tr>
    <td colspan="2" style="margin-bottom:5px;border-bottom:1px dotted #000000;">&nbsp;</td>
  </tr>
  <tr>
    <td colspan="2">&nbsp;</td>
  </tr>
  <?php 
        break;

        case 'textarea':
        ?>
  <tr>
    <td width="20%" rowspan="2" valign="middle"><strong><?php echo $value['name']; ?></strong></td>
    <td width="80%"><textarea name="<?php echo $value['id']; ?>" style="width:400px; height:200px;" type="<?php echo $value['type']; ?>" cols="" rows=""><?php if ( get_settings( $value['id'] ) != "") { echo get_settings( $value['id'] ); } else { echo $value['std']; } ?>
</textarea></td>
  </tr>
  <tr>
    <td><small><?php echo $value['desc']; ?></small></td>
  </tr>
  <tr>
    <td colspan="2" style="margin-bottom:5px;border-bottom:1px dotted #000000;">&nbsp;</td>
  </tr>
  <tr>
    <td colspan="2">&nbsp;</td>
  </tr>
  <?php 
        break;

        case 'select':
        ?>
  <tr>
    <td width="20%" rowspan="2" valign="middle"><strong><?php echo $value['name']; ?></strong></td>
    <td width="80%"><select style="width:240px;" name="<?php echo $value['id']; ?>" id="<?php echo $value['id']; ?>">
        <?php foreach ($value['options'] as $option) { ?>
        <option<?php if ( get_settings( $value['id'] ) == $option) { echo ' selected="selected"'; } elseif ($option == $value['std']) { echo ' selected="selected"'; } ?>><?php echo $option; ?></option>
        <?php } ?>
      </select></td>
  </tr>
  <tr>
    <td><small><?php echo $value['desc']; ?></small></td>
  </tr>
  <tr>
    <td colspan="2" style="margin-bottom:5px;border-bottom:1px dotted #000000;">&nbsp;</td>
  </tr>
  <tr>
    <td colspan="2">&nbsp;</td>
  </tr>
  <?php
        break;

        case "checkbox":
        ?>
  <tr>
    <td width="20%" rowspan="2" valign="middle"><strong><?php echo $value['name']; ?></strong></td>
    <td width="80%"><? if(get_settings($value['id'])){ $checked = "checked="checked""; }else{ $checked = ""; } ?>
      <input type="checkbox" name="<?php echo $value['id']; ?>" id="<?php echo $value['id']; ?>" value="true" <?php echo $checked; ?> /></td>
  </tr>
  <tr>
    <td><small><?php echo $value['desc']; ?></small></td>
  </tr>
  <tr>
    <td colspan="2" style="margin-bottom:5px;border-bottom:1px dotted #000000;">&nbsp;</td>
  </tr>
  <tr>
    <td colspan="2">&nbsp;</td>
  </tr>
  <?php         break;


} 
}
?>

  <!--</table>-->

  <p class="submit">
    <input name="save" type="submit" value="Save changes" />
    <input type="hidden" name="action" value="save" />
  </p>
</form>
<form method="post">
  <p class="submit">
    <input name="reset" type="submit" value="Reset" />
    <input type="hidden" name="action" value="reset" />
  </p>
</form>
<?php
}

add_action('admin_menu','mytheme_add_admin'); ?>
<?php
if ( function_exists('register_sidebar') )
    register_sidebar(array(
        'before_widget' => '<li id="%1$s" class="widget %2$s">','after_widget' => '</li>','before_title' => '','after_title' => '',));

?>

然后将以下代码放在“header.php”的底部：

<?php global $options;
foreach ($options as $value) {
    if (get_settings( $value['id'] ) === FALSE) { $$value['id'] = $value['std']; } else { $$value['id'] = get_settings( $value['id'] ); }
}
?>

然后,这是我用于在前端显示已保存变量的代码：

<?php echo $tgh_categories; ?>

解决方法

这是真的出现了吗？如果是这样,请将cat_id更改为cat_ID

foreach ($categories as $category_list ) {
       $wp_cats[$category_list->cat_id] = $category_list->cat_name;
}

编辑

在这之后：

foreach ($categories as $category_list ) {
               $wp_cats[$category_list->cat_ID] = $category_list->cat_name;
        }

加：

$wp_ids = array();

foreach ($categories as $category_list ) {
       $wp_ids[$category_list->cat_ID] = $category_list->cat_ID;
}

改变这个：

array(  "name" => "Pick Categories",

对此：

array(  "name" => "Pick Categories","cid" => wp_ids,

也改变这个：

case 'select':
    ?>
     <tr>
       <td width="20%" rowspan="2" valign="middle"><strong><?php echo $value['name']; ?></strong></td>
       <td width="80%"><select style="width:240px;" name="<?php echo $value['id']; ?>" id="<?php echo $value['id']; ?>">
           <?php foreach ($value['options'] as $option) { ?>
           <option<?php if ( get_settings( $value['id'] ) == $option) { echo ' selected="selected"'; } elseif ($option == $value['std']) { echo ' selected="selected"'; } ?>><?php echo $option; ?></option>
           <?php } ?>
         </select></td>
     </tr>
     <tr>
       <td><small><?php echo $value['desc']; ?></small></td>
     </tr>
     <tr>
       <td colspan="2" style="margin-bottom:5px;border-bottom:1px dotted #000000;">&nbsp;</td>
     </tr>
     <tr>
       <td colspan="2">&nbsp;</td>
     </tr>
     <?php
           break;

对此：

case 'select':
    ?>
     <tr>
       <td width="20%" rowspan="2" valign="middle"><strong><?php echo $value['name']; ?></strong></td>
       <td width="80%"><select style="width:240px;" name="<?php echo $value['id']; ?>" id="<?php echo $value['id']; ?>">
           <?php foreach ($value['options'] as $option) { ?>
           <option value="<?php echo $value['cid']; ?>" <?php if ( get_settings( $value['id'] ) == $option) { echo ' selected="selected"'; } elseif ($option == $value['std']) { echo ' selected="selected"'; } ?>><?php echo $option; ?></option>
           <?php } ?>
         </select></td>
     </tr>
     <tr>
       <td><small><?php echo $value['desc']; ?></small></td>
     </tr>
     <tr>
       <td colspan="2" style="margin-bottom:5px;border-bottom:1px dotted #000000;">&nbsp;</td>
     </tr>
     <tr>
       <td colspan="2">&nbsp;</td>
     </tr>
     <?php
           break;

编辑

我的坏,我忘记了$

改变这个：

"cid" => wp_ids,

至：

"cid" => $wp_ids,

新编辑

改变这个：

<tr>
   <td width="20%" rowspan="2" valign="middle"><strong><?php echo $value['name']; ?></strong></td>
   <td width="80%"><select style="width:240px;" name="<?php echo $value['id']; ?>" id="<?php echo $value['id']; ?>">
       <?php foreach ($value['options'] as $option) { ?>
       <option value="<?php echo $value['cid']; ?>" <?php if ( get_settings( $value['id'] ) == $option) { echo ' selected="selected"'; } elseif ($option == $value['std']) { echo ' selected="selected"'; } ?>><?php echo $option; ?></option>
       <?php } ?>
     </select></td>
 </tr>

对此：

<tr>
   <td width="20%" rowspan="2" valign="middle"><strong><?php echo $value['name']; ?></strong></td>
   <td width="80%"><select style="width:240px;" name="<?php echo $value['id']; ?>" id="<?php echo $value['id']; ?>">
       <?php 

$categories = get_categories('hide_empty=0&orderby=name');

foreach ($categories as $category_list ) {

  ?>
       <option value="<?php echo $category_list->cat_ID; ?>" <?php if ( get_settings( $value['id'] ) == $category_list->cat_name) { echo ' selected="selected"'; } elseif ($category_list->cat_name == $value['std']) { echo ' selected="selected"'; } ?>><?php echo $category_list->cat_name; ?></option>
       <?php } ?>
     </select></td>
 </tr>

（编辑：李大同）

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