在类别编辑器中添加自定义字段的任何示例吗？

Question

在类别编辑器中添加自定义字段的任何示例吗？

6

11359 2011-01-07

我想我快要破了这个螺母:)

我正在尝试向"类别"编辑器添加一组自定义字段.由于我不处理postmeta,因此我相信我会将自定义类别字段值写入wp_term_taxonomy表而不是wp_options表.这是正确的吗?

如果有任何执行此操作的示例,请共享链接或部分代码.我不确定如何捕获和保存我的自定义类别字段.

这是我的代码...

 //add the hook to place the form on the category editor screen
add_action('edit_category_form','ce4_category_admin');

//Adds the custom title box to the category editor
function ce4_category_admin($category){
    echo "category: ".$category->term_id; //great, I got a reference to the term_id, now I need to get/set my custom fields with this key
    ?>
<table class="form-table">
        <tr class="form-field">
            <th scope="row" valign="top"><label for="_ce4-categoryTitle">Full Category Title</label></th>
            <td><input name="_ce4-categoryTitle" id="_ce4-categoryTitle" type="text" size="40" aria-required="false" value="<?php echo get_taxonomy($category->term_id, '_ce4-categoryTitle'); ?>" />
            <p class="description">The title is optional but will be used in place of the name on the home page category index.</p></td>
        </tr>
        <tr class="form-field">
            <th scope="row" valign="top"><label for="_ce4_fullDescription">Full Category Text for Landing Page</label></th>
            <td><textarea style="height:70px; width:100%;margin-left:-5px;" name="_ce4_fullDescription" id="_ce4_fullDescription"><?php echo get_taxonomy($category->term_id, '_ce4_fullDescription'); ?></textarea>
            <p class="description">This text will appear on the category landing page when viewing all articles in a category. The image, you supply above, if any, will be used here and this content will wrap around it.</p></td>
        </tr>
</table>
<?php
}

//How to save the custom field data? Normally I'd use..
//add_action('save_post', 'custom_save_function');
//but this is not a post, so perhaps there's another method?

I think I'm pretty close to cracking this nut :)

I'm trying to add a set of custom fields to the Category editor. Since I'm not dealing with post meta, I believe I'll be writing my custom category field values to the wp_term_taxonomy table rather than the wp_options table. Is this correct?

If there are any examples of how to do this, please share a link or bit of code. I'm not sure how to capture and save my custom category fields.

Here's my code...

//add the hook to place the form on the category editor screen
add_action('edit_category_form','ce4_category_admin');

//Adds the custom title box to the category editor
function ce4_category_admin($category){
    echo "category: ".$category->term_id; //great, I got a reference to the term_id, now I need to get/set my custom fields with this key
    ?>
<table class="form-table">
        <tr class="form-field">
            <th scope="row" valign="top"><label for="_ce4-categoryTitle">Full Category Title</label></th>
            <td><input name="_ce4-categoryTitle" id="_ce4-categoryTitle" type="text" size="40" aria-required="false" value="<?php echo get_taxonomy($category->term_id, '_ce4-categoryTitle'); ?>" />
            <p class="description">The title is optional but will be used in place of the name on the home page category index.</p></td>
        </tr>
        <tr class="form-field">
            <th scope="row" valign="top"><label for="_ce4_fullDescription">Full Category Text for Landing Page</label></th>
            <td><textarea style="height:70px; width:100%;margin-left:-5px;" name="_ce4_fullDescription" id="_ce4_fullDescription"><?php echo get_taxonomy($category->term_id, '_ce4_fullDescription'); ?></textarea>
            <p class="description">This text will appear on the category landing page when viewing all articles in a category. The image, you supply above, if any, will be used here and this content will wrap around it.</p></td>
        </tr>
</table>
<?php
}

//How to save the custom field data? Normally I'd use..
//add_action('save_post', 'custom_save_function');
//but this is not a post, so perhaps there's another method?

1 个回答

投票数

onetrickpony · Accepted Answer · 2011-01-08

8

2011-01-08

不.您必须使用wp_options,因为您无法在wp_term_taxonomy表中创建新字段(如果这样做,则将在下一个WP更新中将其释放).

所以:

 // the option name
define('MY_CATEGORY_FIELDS', 'my_category_fields_option');

// your fields (the form)
add_filter('edit_category_form', 'my_category_fields');
function my_category_fields($tag) {
    $tag_extra_fields = get_option(MY_CATEGORY_FIELDS);

    ?>

<table class="form-table">
        <tr class="form-field">
            <th scope="row" valign="top"><label for="_ce4-categoryTitle">Full Category Title</label></th>
            <td><input name="_ce4-categoryTitle" id="_ce4-categoryTitle" type="text" size="40" aria-required="false" value="<?php echo $tag_extra_fields[$tag->term_id]['my_title']; ?>" />
            <p class="description">The title is optional but will be used in place of the name on the home page category index.</p></td>
        </tr>
        <tr class="form-field">
            <th scope="row" valign="top"><label for="_ce4_fullDescription">Full Category Text for Landing Page</label></th>
            <td><textarea style="height:70px; width:100%;margin-left:-5px;" name="_ce4_fullDescription" id="_ce4_fullDescription"><?php  echo $tag_extra_fields[$tag->term_id]['my_description']; ?></textarea>
            <p class="description">This text will appear on the category landing page when viewing all articles in a category. The image, you supply above, if any, will be used here and this content will wrap around it.</p></td>
        </tr>
</table>

    <?php
}


// when the form gets submitted, and the category gets updated (in your case the option will get updated with the values of your custom fields above
add_filter('edited_terms', 'update_my_category_fields');
function update_my_category_fields($term_id) {
  if($_POST['taxonomy'] == 'category'):
    $tag_extra_fields = get_option(MY_CATEGORY_FIELDS);
    $tag_extra_fields[$term_id]['my_title'] = strip_tags($_POST['_ce4-categoryTitle']);
    $tag_extra_fields[$term_id]['my_description'] = strip_tags($_POST['_ce4_fullDescription']);
    update_option(MY_CATEGORY_FIELDS, $tag_extra_fields);
  endif;
}


// when a category is removed
add_filter('deleted_term_taxonomy', 'remove_my_category_fields');
function remove_my_category_fields($term_id) {
  if($_POST['taxonomy'] == 'category'):
    $tag_extra_fields = get_option(MY_CATEGORY_FIELDS);
    unset($tag_extra_fields[$term_id]);
    update_option(MY_CATEGORY_FIELDS, $tag_extra_fields);
  endif;
}

最后两个可能有一些与类别相关的挂钩,我没有进行搜索.我只是根据我的一个旧主题改编了上面的代码,在该主题中,管理员可以将图像附加到自定义分类法术语中.

No. You have to use wp_options, because you can't create new fields in the wp_term_taxonomy table (If you do, in the next WP update you'll loose them).

So:

// the option name
define('MY_CATEGORY_FIELDS', 'my_category_fields_option');

// your fields (the form)
add_filter('edit_category_form', 'my_category_fields');
function my_category_fields($tag) {
    $tag_extra_fields = get_option(MY_CATEGORY_FIELDS);

    ?>

<table class="form-table">
        <tr class="form-field">
            <th scope="row" valign="top"><label for="_ce4-categoryTitle">Full Category Title</label></th>
            <td><input name="_ce4-categoryTitle" id="_ce4-categoryTitle" type="text" size="40" aria-required="false" value="<?php echo $tag_extra_fields[$tag->term_id]['my_title']; ?>" />
            <p class="description">The title is optional but will be used in place of the name on the home page category index.</p></td>
        </tr>
        <tr class="form-field">
            <th scope="row" valign="top"><label for="_ce4_fullDescription">Full Category Text for Landing Page</label></th>
            <td><textarea style="height:70px; width:100%;margin-left:-5px;" name="_ce4_fullDescription" id="_ce4_fullDescription"><?php  echo $tag_extra_fields[$tag->term_id]['my_description']; ?></textarea>
            <p class="description">This text will appear on the category landing page when viewing all articles in a category. The image, you supply above, if any, will be used here and this content will wrap around it.</p></td>
        </tr>
</table>

    <?php
}


// when the form gets submitted, and the category gets updated (in your case the option will get updated with the values of your custom fields above
add_filter('edited_terms', 'update_my_category_fields');
function update_my_category_fields($term_id) {
  if($_POST['taxonomy'] == 'category'):
    $tag_extra_fields = get_option(MY_CATEGORY_FIELDS);
    $tag_extra_fields[$term_id]['my_title'] = strip_tags($_POST['_ce4-categoryTitle']);
    $tag_extra_fields[$term_id]['my_description'] = strip_tags($_POST['_ce4_fullDescription']);
    update_option(MY_CATEGORY_FIELDS, $tag_extra_fields);
  endif;
}


// when a category is removed
add_filter('deleted_term_taxonomy', 'remove_my_category_fields');
function remove_my_category_fields($term_id) {
  if($_POST['taxonomy'] == 'category'):
    $tag_extra_fields = get_option(MY_CATEGORY_FIELDS);
    unset($tag_extra_fields[$term_id]);
    update_option(MY_CATEGORY_FIELDS, $tag_extra_fields);
  endif;
}

There might be some category-related hooks for the last two, I didn't search for them. I just adapted the code above from a old theme of mine in which the admin can attach a image to a custom taxonomy term...

@AA:谢谢,这很好！查看类别存档页面时,如何检索标题的值?

@AA: Thanks, this works great! How would you retrieve the value for the title when you are viewing the category archive page?
- 0
- 2011-01-11
- Scott B
使用`get_option(MY_CATEGORY_FIELDS)`

using `get_option(MY_CATEGORY_FIELDS)`
- 0
- 2011-01-11
- onetrickpony
我使用了这段代码,效果很好.我发现我要添加的字段被放置在添加类别按钮下方.您是否知道一种使新字段显示在按钮上方的方法?我试图从代码中删除表,只是离开了tr和td,但是那没用

I used this code and it works great. I found that the field I want to add gets put below the add category button. Do you know a way to get the new fields to show above the button? I tried removing the table from the code and just left the tr and td but that didn't work
- 0
- 2012-09-25
- Jamie
是的,显然WP现在有新的操作可供您使用.主要是`edit_category_form_fields`而不是`edit_category_form`.参见[edit_tags.php](http://core.svn.wordpress.org/trunk/wp-admin/edit-tags.php)

yes, apparently WP has new actions now which you can use. Mainly `edit_category_form_fields` instead of `edit_category_form`. See [edit_tags.php](http://core.svn.wordpress.org/trunk/wp-admin/edit-tags.php)
- 0
- 2012-09-25
- onetrickpony
使用add_action(." _ add_form_fields",my_action)扩展类别表单编辑器.即在对象上下文中,针对您的自定义操作的add_action(" store_add_form_fields",array($this,'add_form_fields))会与"存储"的分类类型挂钩.WordPress的3.X +版本更喜欢将格式用于动作挂钩,较旧的样式"edit_category_form_fields"以及其他样式在代码中标记为"旧版支持",这意味着它们最终可能会消失..参考:http://core.trac.wordpress.org/browser/tags/3.4.2/wp-admin/edit-tags.php

Use add_action(."_add_form_fields",my_action) to extend the category form editor. i.e. add_action("store_add_form_fields",array($this,'add_form_fields)) in an object context for your custom action hooks for a taxonomy type of 'store'. Version 3.X+ of WordPress prefers the format for action hooks, the older style of "edit_category_form_fields" and others are marked as "legacy support" in the code, which means they may/will eventually go away. ref: http://core.trac.wordpress.org/browser/tags/3.4.2/wp-admin/edit-tags.php
- 0
- 2012-10-03
- Lance Cleveland