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File: README.md
Role: Documentation
Content type: text/markdown
Description: Documentation
Class: WordPress Fields Plugin
Add custom form fields to WordPress interface
Author: By
Last change:
Date: 2 years ago
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Contents

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WP Meta Fields

Easy custom field framework for WordPress theme and plugns.

How to add into theme/plugin?

  1. Download latest zip of framework and unzip into your theme/plugin.
  2. Add below code to initialize framework.
require_once 'wp-meta-fields/wp-meta-fields.php';

You can organize your directory structure as per your requirement. Instead of adding framework in root directory of plugin/theme, I'll use the inc directory. To add the framework.

  1. Create `inc` directory in your plugin/theme.
  2. Unzip latest release of `WP Meta Fields` into `inc` directory.
  3. Include it into your plugin/theme by adding below code.
require_once 'inc/wp-meta-fields/wp-meta-fields.php';

NOTE: Make sure you have the latest version wp-meta-fields. Get the latest version from wp-meta-fields

Use sample plugin

To know how to integrate meta field framework into plugin, Use the sample plugin

How to add meta box?

Use function mf_add_meta_box() to register meta box and its meta fields. It contain parameters which are used for WordPress function add_meta_box()

E.g.

Register meta box for post type Post.

mf_add_meta_box( array(
	'id'       => 'example-all-fields',
	'title'    => __( 'Example - All Fields' ),
	'screen'   => array( 'post' ),
	'context'  => 'normal',
	'priority' => 'default',
	'fields'   => array(
		// ..
	)
));

Where,

| Parameter | Description | |-----------------|-----------------| |id | (string) (Required) Meta box ID (used in the 'id' attribute for the meta box). | | title | (string) (Required) Title of the meta box.| | screen| (string|array|WP_Screen) (Optional) The screen or screens on which to show the box (such as a post type, 'link', or 'comment'). Accepts a single screen ID, WP_Screen object, or array of screen IDs. Default is the current screen. If you have used add_menu_page() or add_submenu_page() to create a new screen (and hence screen_id), make sure your menu slug conforms to the limits of sanitize_key() otherwise the 'screen' menu may not correctly render on your page. Default value: null| | context| (string) (Optional) The context within the screen where the boxes should display. Available contexts vary from screen to screen. Post edit screen contexts include 'normal', 'side', and 'advanced'. Comments screen contexts include 'normal' and 'side'. Menus meta boxes (accordion sections) all use the 'side' context. Global. Default value: 'advanced'| | priority |(string) (Optional) The priority within the context where the boxes should show ('high', 'low'). Default value: 'default'|

How to add fields?

Register single text field which have a unique meta key prefix-1-text our above registered meta box.

mf_add_meta_box( array(
	'id'       => 'example-meta-box',
	'title'    => __( 'Example Meta Box' ),
	'screen'   => array( 'post' ),
	'context'  => 'normal',
	'priority' => 'default',
	'fields'   => array(
		'prefix-1-text' => array(
			'type'        => 'text',
			'title'       => __( 'Text Field', 'textdomain' ),
			'description' => __( 'Simple text field for demonstration purpose.', 'textdomain' ),
			'hint'        => __( 'This is the Text Field for storing the text data for demonstration purpose.', 'textdomain' ),
			'default'     => '',
		),
	)
));

Here,

| Parameter | Description | |-----------------|-----------------| | prefix-1-text | Unique meta key. | | type | Field type. | | title | Field title. | | description | Field description. | | hint | Field hint. | | default | Field default value. |

Above registered field is looks like below screenshot in the post edit window.

All Meta Box

How to print/retrieve meta field value.

To retrieve/print the value of our registered field prefix-1-text use:

[mf meta_key='prefix-1-text']

or

mf_meta( 'prefix-1-text' );

or

echo mf_get_meta( 'prefix-1-text' );

  1. Use shortcode `[mf meta_key="META_KEY" post_id="POST_ID"]` to `print` the meta value.

E.g. [mf meta_key='prefix-1-text'] By default it get the current post ID by using function get_the_ID().

OR [mf meta_key='prefix-1-text' post_id='46'] Specific post meta value by passing post ID.

  1. Use function `mf_meta()` to `print` the meta value.

E.g. <?php mf_meta( 'prefix-1-text' ); ?> By default it get the current post ID by using function get_the_ID().

OR <?php mf_meta( 'prefix-1-text', 46 ); ?> Specific post meta value by passing post ID.

  1. Use function `mf_get_meta()` to `retrieve` the meta value.

E.g. <?php echo mf_get_meta( 'prefix-1-text' ); ?> By default it get the current post ID by using function get_the_ID().

OR <?php echo mf_get_meta( 'prefix-1-text', 46 ); ?> Specific post meta value by passing post ID. E.g.

Field Types

Now, Framework support below build in HTML5 field support.

  • text
  • textarea
  • password
  • color
  • date
  • datetime-local
  • email
  • month
  • number
  • time
  • week
  • url
  • checkbox
  • radio
  • select

Examples

All Meta Field:

/
 * Meta Fields (Screen - Normal)
 */
mf_add_meta_box( array(
	'id'       => 'example-all-fields',
	'title'    => __( 'Example - All Fields' ),
	'screen'   => array( 'post' ),
	'context'  => 'normal',
	'priority' => 'default',
	'fields' => array(
		'prefix-1-text' => array(
			'type'        => 'text',
			'title'       => 'Text Field',
			'description' => 'Text Field field description goes here.',
			'hint' => 'Text Field field description goes here.',
			'default'     => '',
		),
		'prefix-1-textarea' => array(
			'type'        => 'textarea',
			'title'       => 'Textarea',
			'description' => 'Textarea field description goes here.',
			'hint' => 'Textarea field description goes here.',
			'default'     => '',
		),
		'prefix-1-password' => array(
			'type'        => 'password',
			'title'       => 'Password',
			'description' => 'Password field description goes here.',
			'hint' => 'Password field description goes here.',
			'default'     => '',
		),
		'prefix-1-color' => array(
			'type'        => 'color',
			'title'       => 'Color',
			'description' => 'Color field description goes here.',
			'hint' => 'Color field description goes here.',
			'default'     => '#f3f3f3',
		),
		'prefix-1-date' => array(
			'type'        => 'date',
			'title'       => 'Date',
			'description' => 'Date field description goes here.',
			'hint' => 'Date field description goes here.',
			'default'     => '',
		),
		'prefix-1-datetime-local' => array(
			'type'        => 'datetime-local',
			'title'       => 'Date Time Local',
			'description' => 'Date Time Local field description goes here.',
			'hint' => 'Date Time Local field description goes here.',
			'default'     => '',
		),
		'prefix-1-email' => array(
			'type'        => 'email',
			'title'       => 'Email',
			'description' => 'Email field description goes here.',
			'hint' => 'Email field description goes here.',
			'default'     => '',
		),
		'prefix-1-month' => array(
			'type'        => 'month',
			'title'       => 'Month',
			'description' => 'Month field description goes here.',
			'hint' => 'Month field description goes here.',
			'default'     => '',
		),
		'prefix-1-number' => array(
			'type'        => 'number',
			'title'       => 'Number',
			'description' => 'Number field description goes here.',
			'hint' => 'Number field description goes here.',
			'default'     => '',
		),
		'prefix-1-time' => array(
			'type'        => 'time',
			'title'       => 'Time',
			'description' => 'Time field description goes here.',
			'hint' => 'Time field description goes here.',
			'default'     => '',
		),
		'prefix-1-week' => array(
			'type'        => 'week',
			'title'       => 'Week',
			'description' => 'Week field description goes here.',
			'hint' => 'Week field description goes here.',
			'default'     => '',
		),
		'prefix-1-url' => array(
			'type'        => 'url',
			'title'       => 'Url',
			'description' => 'Url field description goes here.',
			'hint' => 'Url field description goes here.',
			'default'     => '',
		),
		'prefix-1-checkbox' => array(
			'type'        => 'checkbox',
			'title'       => 'Checkbox',
			'description' => 'Checkbox field description goes here.',
			'hint'        => 'Checkbox field description goes here.',
			'default'     => true,
		),
		'prefix-1-radio' => array(
			'type'        => 'radio',
			'title'       => 'Radio',
			'description' => 'Radio field description goes here.',
			'hint' => 'Radio field description goes here.',
			'default'     => 'one',
			'choices' => array(
				'one'   => 'One',
				'two'   => 'Two',
				'three' => 'Three',
			),
		),
		'prefix-1-select' => array(
			'type'        => 'select',
			'title'       => 'Select',
			'description' => 'Select field description goes here.',
			'hint' => 'Select field description goes here.',
			'default'     => 'one',
			'choices' => array(
				'one'   => 'One',
				'two'   => 'Two',
				'three' => 'Three',
			),
		),
	)
) );

It generate the meta box and meta fields like below screenshot.

All Meta Box


For more information send a message to info at phpclasses dot org.