Amit Gupta

iG:Custom Metaboxes is a WordPress plugin to provide an object oriented and clean API for creating custom meta-boxes on wp-admin post_type add/edit screens.
This plugin is more or less a library which is meant to be used in other plugins or themes. On its own this plugin does nothing, it has no UI nor any configuration to be set/tweaked. This plugin allows addition of HTML5 fields however the functionality of specialized fields like color picker, date picker etc. is browser dependent. The plugin does not add any JavaScript to make these fields compatible with browsers which don’t support HTML5 or which don’t add functionality to these specialized fields.
This plugin has been written with WordPress.com VIP compliance in mind, so you can use it as is even if you host your website with WordPress.com VIP.
Requirements: This plugin requires PHP 5.4 or better and is supported on WordPress 4.0 or better. It might work on a lower version of PHP or WordPress but no support would be provided for those platforms.
Pull requests on Github are welcome.
Github: https://github.com/coolamit/ig-custom-metaboxes
<h3>Plugin Usage</h3>
On its own this plugin will not do anything, it is a library meant to be used in other plugins/themes. It provides an API to create custom metaboxes in wp-admin on post_type screens in an object oriented way.
Usage Example:
<pre><code>$metabox = new iG\Metabox\Metabox( 'my-metabox-1' );

$metabox->set_title( 'My Cool Metabox' )
 ->set_context( 'normal' )
 ->set_priority( 'default' )
 ->set_css_class( 'my-metabox' )
 ->set_post_type( 'post' )
 ->add_field( //add a simple text input field
 iG\Metabox\Text_Field::create( 'my-txt-1', 'My Text Field 1' )
 ->set_description( 'Some Desc for 1st Field' )
 ->set_css_class( 'my-txt-css-1 second-css-cls' )
 ->set_placeholder( 'Enter the first text here' )
 ->set_size( 50 )
 )
 ->add_field( //add a HTML5 number input field
 iG\Metabox\Number_Field::create( 'my-num-1', 'My Numb Field A' )
 ->set_description( 'Some Desc for 1st Number Field' )
 ->set_css_class( 'my-num-css-1' )
 ->set_placeholder( 'Enter the first number here' )
 ->set_step( 2.5 )
 )
 ->add_field( //add a HTML5 color picker
 iG\Metabox\Color_Field::create( 'my-col-1', 'My Color Field 1a' )
 ->set_description( 'Some Desc for 1st Color Field' )
 ->set_css_class( 'my-colr-css-1' )
 )
 ->add_field( //add a HTML date picker
 iG\Metabox\Date_Field::create( 'my-dt-1', 'My Date Field 1a' )
 ->set_description( 'Some Desc for 1st Date Field' )
 ->set_css_class( 'my-dt-css-1' )
 ->set_min( '2014-05-01' )
 )
 ->add_field( //add a HTML5 date time picker
 iG\Metabox\Date_Time_Field::create( 'my-dttm-1', 'My Date Time Field A' )
 ->set_description( 'Some Desc for 1st Date Time Field' )
 ->set_css_class( 'my-dttm-css-1' )
 ->set_min( '2014-05-01T05:00' )
 )
 ->add_field( //add a radio button group
 iG\Metabox\Radio_Group::create( 'my-rdg-1', 'My Radio Group A' )
 ->set_description( 'Some Desc for 1st Radio Group' )
 ->set_css_class( 'my-rdg-css-1' )
 ->set_values( array(
 'apple' => 'Apple',
 'grape' => 'Grape',
 'banana' => 'Banana',
 'orange' => 'Orange',
 'peach' => 'Peach',
 ) )
 )
 ->add();
</code></pre>

iG:Custom Metaboxes

A WordPress plugin to provide an object oriented and clean API for creating custom meta-boxes on wp-admin post_type add/edit screens.

Nilambar Sharma

<h3>Source Affix</h3>
This is right plugin for you if you want to add source link to your post. It adds separate meta box for the input of source text. You can use this feature to any Post or Page. Even more, it also supports custom post type. Several plugin settings are also available. You can show sources in comma separated form or in an unordered list. You can append or prepend source to the content.

Source Affix

A plugin for adding source links to your Post. Supports Page and Custom Post Type also.

iG:Custom Metaboxes vs Source Affix