如何将自定义字段添加到自定义帖子类型？

这可能比您想象的要复杂,我将使用框架进行研究:

• http://wpgear.org/#meta-fields

如果您想编写自己的书,请参考以下一些不错的教程:

• http://net.tutsplus.com/tutorials/wordpress/在WordPress中创建附件的自定义字段/
• http://sltaylor.co.uk/blog/control-your-own-wordpress-custom-fields/
• http://thinkvitamin.com/code/create-your-first-wordpress-custom-post-type/

This is probably more complicated than you think, I would look into using a framework:

• http://wpgear.org/#meta-fields

If you want to write your own , here are some decent tutorials:

• http://net.tutsplus.com/tutorials/wordpress/creating-custom-fields-for-attachments-in-wordpress/
• http://sltaylor.co.uk/blog/control-your-own-wordpress-custom-fields/
• http://thinkvitamin.com/code/create-your-first-wordpress-custom-post-type/

添加/编辑supports参数(使用register_post_type时)包括custom-fields以发布您自定义帖子类型的编辑屏幕:

 'supports' => array( 
  'title', 
  'editor', 
  'excerpt', 
  'thumbnail', 
  'custom-fields', 
  'revisions' 
)
 

来源: https://codex.wordpress.org/Using_Custom_Fields#Displaying_Custom_Fields

Add/edit the supports argument ( while using register_post_type ) to include the custom-fields to post edit screen of you custom post type:

'supports' => array( 
  'title', 
  'editor', 
  'excerpt', 
  'thumbnail', 
  'custom-fields', 
  'revisions' 
)

Source: https://codex.wordpress.org/Using_Custom_Fields#Displaying_Custom_Fields

尽管您必须添加一些验证,但是对于当前版本的WordPress,此操作似乎并不复杂.

基本上,您需要两个步骤将"自定义字段"添加到"自定义帖子类型":

1. 创建一个保存您的"自定义字段"的metabox
2. 将您的"自定义字段"保存到数据库中

这些步骤在此处进行了全局描述: http://wordpress.org/support/topic/is-it-possible-to-add-an-extra-field-to-a-custom-post-type

示例:

将名为"功能"的自定义字段添加到名为"prefix-teammembers"的自定义帖子类型中.

首先添加元框:

 function prefix_teammembers_metaboxes( ) {
   global $wp_meta_boxes;
   add_meta_box('postfunctiondiv', __('Function'), 'prefix_teammembers_metaboxes_html', 'prefix_teammembers', 'normal', 'high');
}
add_action( 'add_meta_boxes_prefix-teammembers', 'prefix_teammembers_metaboxes' );
 

如果您添加或编辑"前缀团队成员",则会触发add_meta_boxes_{custom_post_type}挂钩.有关add_meta_box()函数.在上面的add_meta_box()调用中,是prefix_teammembers_metaboxes_html,这是添加表单字段的回调:

 function prefix_teammembers_metaboxes_html()
{
    global $post;
    $custom = get_post_custom($post->ID);
    $function = isset($custom["function"][0])?$custom["function"][0]:'';
?>
    <label>Function:</label><input name="function" value="<?php echo $function; ?>">
<?php
}
 

第二步,将您的自定义字段添加到数据库.保存save_post_{custom_post_type}钩子后会触发(从3.7版开始,请参见: https://stackoverflow.com/questions/5151409/wordpress-save-post-action-for-custom-posts ).您可以挂钩以保存您的自定义字段:

 function prefix_teammembers_save_post()
{
    if(empty($_POST)) return; //why is prefix_teammembers_save_post triggered by add new? 
    global $post;
    update_post_meta($post->ID, "function", $_POST["function"]);
}   

add_action( 'save_post_prefix-teammembers', 'prefix_teammembers_save_post' );   
 

Although you should have to add some validation, this action does not seem to be complicated for the current version of WordPress.

Basically you need two steps to add a Custom Field to a Custom Post Type:

1. Create a metabox which holds your Custom Field
2. Save your Custom Field to the database

These steps are globally described here: http://wordpress.org/support/topic/is-it-possible-to-add-an-extra-field-to-a-custom-post-type

Example:

Add a Custom Field called "function" to a Custom Post Type called "prefix-teammembers".

First add the metabox:

function prefix_teammembers_metaboxes( ) {
   global $wp_meta_boxes;
   add_meta_box('postfunctiondiv', __('Function'), 'prefix_teammembers_metaboxes_html', 'prefix_teammembers', 'normal', 'high');
}
add_action( 'add_meta_boxes_prefix-teammembers', 'prefix_teammembers_metaboxes' );

If your add or edit a "prefix-teammembers" the add_meta_boxes_{custom_post_type} hook is triggered. See http://codex.wordpress.org/Function_Reference/add_meta_box for the add_meta_box() function. In the above call of add_meta_box() is prefix_teammembers_metaboxes_html, a callback to add your form field:

function prefix_teammembers_metaboxes_html()
{
    global $post;
    $custom = get_post_custom($post->ID);
    $function = isset($custom["function"][0])?$custom["function"][0]:'';
?>
    <label>Function:</label><input name="function" value="<?php echo $function; ?>">
<?php
}

In the second step you have your custom field to the database. On saving the save_post_{custom_post_type} hook is triggered (since v 3.7, see: https://stackoverflow.com/questions/5151409/wordpress-save-post-action-for-custom-posts). You can hook this to save your custom field:

function prefix_teammembers_save_post()
{
    if(empty($_POST)) return; //why is prefix_teammembers_save_post triggered by add new? 
    global $post;
    update_post_meta($post->ID, "function", $_POST["function"]);
}   

add_action( 'save_post_prefix-teammembers', 'prefix_teammembers_save_post' );   

自定义元框和自定义字段有各种插件.如果您查看的是针对开发人员的插件,则应尝试元框.它轻巧而且功能强大.

如果您正在寻找有关如何为元框/自定义字段编写代码的教程,请这是一个好的开始.这是该系列文章的第一部分,可以帮助您优化代码以使其易于扩展.

There are various plugins for custom meta boxes and custom fields. If you look at a plugin that focuses on developers, then you should try Meta Box. It's lightweight and very powerful.

If you're looking for a tutorial on how to write code for a meta box / custom fields, then this is a good start. It's the first part of a series that might help you refine the code to make it easy to extend.

我知道这个问题很旧,但有关该主题的更多信息

WordPress内置了对自定义字段的支持.如果您具有自定义帖子类型,那么您所要做的就是在" register_post_type"内部的支持数组中包含" custom-fields"(由@kubante回答)

注意,该选项还适用于本机帖子类型,例如您只需要打开它的帖子和页面即可

现在,此自定义字段非常基础,并且接受字符串作为值.在很多情况下都可以,但是对于更复杂的字段,我建议您使用"高级自定义字段"插件

I know this question is old but for more info about the topic

WordPress has built-in support for custom fields. If you have a custom post type then all you need is to include 'custom-fields' inside the support array inside of register_post_type as answered by @kubante

Note that this option is also available for native post types like posts and pages you just need to turn it on

Now This custom field is very basic and accepts a string as a value. In many cases that's fine but for more complex fields, I advise that you use the 'Advanced Custom Fields' plugin

 // slider_metaboxes_html , function for create HTML 
function slider_metaboxes( ) {
   global $wp_meta_boxes;
   add_meta_box('postfunctiondiv', __('Custom link'), 'slider_metaboxes_html', 'slider', 'normal', 'high');
}

//add_meta_boxes_slider => add_meta_boxes_{custom post type}
add_action( 'add_meta_boxes_slider', 'slider_metaboxes' );
 

完美的知识

// slider_metaboxes_html , function for create HTML 
function slider_metaboxes( ) {
   global $wp_meta_boxes;
   add_meta_box('postfunctiondiv', __('Custom link'), 'slider_metaboxes_html', 'slider', 'normal', 'high');
}

//add_meta_boxes_slider => add_meta_boxes_{custom post type}
add_action( 'add_meta_boxes_slider', 'slider_metaboxes' );

Perfect knowledge