Thêm meta field trong wordpress (add meta field in wordpress)

09/07/2019 08:00 21114

1.Xác định meta filed cho post type nào? Vị trí meta box ở đâu

function fcwordpress_add_meta_box() {
//show which post type
	$screens = array( 'post' );
	foreach ( $screens as $screen ) {
		add_meta_box(
			'fcwordpress_sectionid',
			__( 'Meta Field', 'textdomain' ),
//Function callback
			'fcwordpress_meta_box_callback',
			$screen,
//side: on the right
//advanced: below editor
//normal: below editor
			'side',
			'high'
		);
	}
}
add_action( 'add_meta_boxes', 'fcwordpress_add_meta_box' );

function fcwordpress_add_meta_box() {

//show which post type

$screens = array( 'post' );

foreach ( $screens as $screen ) {

add_meta_box(

'fcwordpress_sectionid',

__( 'Meta Field', 'textdomain' ),

//Function callback

'fcwordpress_meta_box_callback',

$screen,

//side: on the right

//advanced: below editor

//normal: below editor

'side',

'high'

);

}

add_action( 'add_meta_boxes', 'fcwordpress_add_meta_box' );

2.Function callback chính là các thành phần của form và những thông tin chúng ta thêm vào

function fcwordpress_meta_box_callback( $post ) {

	// Add an nonce field so we can check for it later.
	wp_nonce_field( 'fcwordpress_meta_box', 'tonyteegarden_meta_box_nonce' );

	/*
	 * Use get_post_meta() to retrieve an existing value
	 * from the database and use the value for the form.
	 */
	$fcwordpress_this_is_podcast = get_post_meta( $post->ID, 'fcwordpress_this_is_podcast', true );
	echo '<label for="fcwordpress_new_field">';
_e( 'Check for set this post is podcast', 'textdomain' );
echo '</label>';
echo '<input '.checked($fcwordpress_this_is_podcast,"1").' type="checkbox" value="1"  id="fcwordpress_this_is_podcast" name="fcwordpress_this_is_podcast" >';
}

function fcwordpress_meta_box_callback( $post ) {

// Add an nonce field so we can check for it later.

wp_nonce_field( 'fcwordpress_meta_box', 'tonyteegarden_meta_box_nonce' );

* Use get_post_meta() to retrieve an existing value

* from the database and use the value for the form.

$fcwordpress_this_is_podcast = get_post_meta( $post->ID, 'fcwordpress_this_is_podcast', true );

echo '<label for="fcwordpress_new_field">';

_e( 'Check for set this post is podcast', 'textdomain' );

echo '</label>';

echo '<input '.checked($fcwordpress_this_is_podcast,"1").' type="checkbox" value="1" id="fcwordpress_this_is_podcast" name="fcwordpress_this_is_podcast" >';

}

3. Xử lý lưu vào post meta

function fcwordpress_save_meta_box_data( $post_id ) {

	/*
	 * We need to verify this came from our screen and with proper authorization,
	 * because the save_post action can be triggered at other times.
	 */

	// Check if our nonce is set.
	if ( ! isset( $_POST['fcwordpress_meta_box_nonce'] ) ) {
		return;
	}

	// Verify that the nonce is valid.
	if ( ! wp_verify_nonce( $_POST['fcwordpress_meta_box_nonce'], 'fcwordpress_meta_box' ) ) {
		return;
	}

	// If this is an autosave, our form has not been submitted, so we don't want to do anything.
	if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) {
		return;
	}

	/* OK, it's safe for us to save the data now. */
	
	$fcwordpress_this_is_podcast = !empty($_POST['fcwordpress_this_is_podcast']) ? $_POST['fcwordpress_this_is_podcast'] : '0';

	// Update the meta field in the database.
	update_post_meta( $post_id, 'fcwordpress_this_is_podcast', $fcwordpress_this_is_podcast );
}
add_action( 'save_post', 'fcwordpress_save_meta_box_data' );

function fcwordpress_save_meta_box_data( $post_id ) {

* We need to verify this came from our screen and with proper authorization,

* because the save_post action can be triggered at other times.

// Check if our nonce is set.

if ( ! isset( $_POST['fcwordpress_meta_box_nonce'] ) ) {

return;

}

// Verify that the nonce is valid.

if ( ! wp_verify_nonce( $_POST['fcwordpress_meta_box_nonce'], 'fcwordpress_meta_box' ) ) {

return;

}

// If this is an autosave, our form has not been submitted, so we don't want to do anything.

if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) {

return;

}

/* OK, it's safe for us to save the data now. */

$fcwordpress_this_is_podcast = !empty($_POST['fcwordpress_this_is_podcast']) ? $_POST['fcwordpress_this_is_podcast'] : '0';

// Update the meta field in the database.

update_post_meta( $post_id, 'fcwordpress_this_is_podcast', $fcwordpress_this_is_podcast );

}

add_action( 'save_post', 'fcwordpress_save_meta_box_data' );

4. Tất cả code để anh chị copy về và sửa theo yêu cầu

function fcwordpress_add_meta_box() {
//show which post type
	$screens = array( 'post' );
	foreach ( $screens as $screen ) {
		add_meta_box(
			'fcwordpress_sectionid',
			__( 'Meta Field', 'textdomain' ),
//Function callback
			'fcwordpress_meta_box_callback',
			$screen,
//side: on the right
//advanced: below editor
//normal: below editor
			'side',
			'high'
		);
	}
}
add_action( 'add_meta_boxes', 'fcwordpress_add_meta_box' )
function fcwordpress_meta_box_callback( $post ) {

	// Add an nonce field so we can check for it later.
	wp_nonce_field( 'fcwordpress_meta_box', 'tonyteegarden_meta_box_nonce' );

	/*
	 * Use get_post_meta() to retrieve an existing value
	 * from the database and use the value for the form.
	 */
	$fcwordpress_this_is_podcast = get_post_meta( $post->ID, 'fcwordpress_this_is_podcast', true );
	echo '<label for="fcwordpress_new_field">';
_e( 'Check for set this post is podcast', 'textdomain' );
echo '</label>';
echo '<input '.checked($fcwordpress_this_is_podcast,"1").' type="checkbox" value="1"  id="fcwordpress_this_is_podcast" name="fcwordpress_this_is_podcast" >';
}
function fcwordpress_save_meta_box_data( $post_id ) {

	/*
	 * We need to verify this came from our screen and with proper authorization,
	 * because the save_post action can be triggered at other times.
	 */

	// Check if our nonce is set.
	if ( ! isset( $_POST['fcwordpress_meta_box_nonce'] ) ) {
		return;
	}

	// Verify that the nonce is valid.
	if ( ! wp_verify_nonce( $_POST['fcwordpress_meta_box_nonce'], 'fcwordpress_meta_box' ) ) {
		return;
	}

	// If this is an autosave, our form has not been submitted, so we don't want to do anything.
	if ( defined( 'DOING_AUTOSAVE' ) &amp;&amp; DOING_AUTOSAVE ) {
		return;
	}

	/* OK, it's safe for us to save the data now. */
	
	$fcwordpress_this_is_podcast = !empty($_POST['fcwordpress_this_is_podcast']) ? $_POST['fcwordpress_this_is_podcast'] : '0';

	// Update the meta field in the database.
	update_post_meta( $post_id, 'fcwordpress_this_is_podcast', $fcwordpress_this_is_podcast );
}
add_action( 'save_post', 'fcwordpress_save_meta_box_data' );</pre-->

function fcwordpress_add_meta_box() {

//show which post type

$screens = array( 'post' );

foreach ( $screens as $screen ) {

add_meta_box(

'fcwordpress_sectionid',

__( 'Meta Field', 'textdomain' ),

//Function callback

'fcwordpress_meta_box_callback',

$screen,

//side: on the right

//advanced: below editor

//normal: below editor

'side',

'high'

);

}

add_action( 'add_meta_boxes', 'fcwordpress_add_meta_box' )

function fcwordpress_meta_box_callback( $post ) {

// Add an nonce field so we can check for it later.

wp_nonce_field( 'fcwordpress_meta_box', 'tonyteegarden_meta_box_nonce' );

* Use get_post_meta() to retrieve an existing value

* from the database and use the value for the form.

$fcwordpress_this_is_podcast = get_post_meta( $post->ID, 'fcwordpress_this_is_podcast', true );

echo '<label for="fcwordpress_new_field">';

_e( 'Check for set this post is podcast', 'textdomain' );

echo '</label>';

echo '<input '.checked($fcwordpress_this_is_podcast,"1").' type="checkbox" value="1" id="fcwordpress_this_is_podcast" name="fcwordpress_this_is_podcast" >';

}

function fcwordpress_save_meta_box_data( $post_id ) {

* We need to verify this came from our screen and with proper authorization,

* because the save_post action can be triggered at other times.

// Check if our nonce is set.

if ( ! isset( $_POST['fcwordpress_meta_box_nonce'] ) ) {

return;

}

// Verify that the nonce is valid.

if ( ! wp_verify_nonce( $_POST['fcwordpress_meta_box_nonce'], 'fcwordpress_meta_box' ) ) {

return;

}

// If this is an autosave, our form has not been submitted, so we don't want to do anything.

if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) {

return;

}

/* OK, it's safe for us to save the data now. */

$fcwordpress_this_is_podcast = !empty($_POST['fcwordpress_this_is_podcast']) ? $_POST['fcwordpress_this_is_podcast'] : '0';

// Update the meta field in the database.

update_post_meta( $post_id, 'fcwordpress_this_is_podcast', $fcwordpress_this_is_podcast );

}

add_action( 'save_post', 'fcwordpress_save_meta_box_data' );</pre-->

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Thêm meta field trong wordpress (add meta field in wordpress)

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