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<?php
if ( ! defined( 'ABSPATH' ) ) {
exit; // Exit if accessed directly
}
if ( ! class_exists( 'ACF_Form_Post' ) ) :
/**
* Class ACF_Form_Post
*
* Handles the functionality for adding custom fields to post edit screens.
*
* @package ACF
* @since ACF 5.0.0
*/
class ACF_Form_Post {
/**
* Style.
*
* @var string The first field groups style CSS.
*/
public $style = '';
/**
* __construct
*
* Sets up the class functionality.
*
* @date 5/03/2014
* @since ACF 5.0.0.0.0
*
* @return void
*/
public function __construct() {
// initialize on post edit screens
add_action( 'load-post.php', array( $this, 'initialize' ) );
add_action( 'load-post-new.php', array( $this, 'initialize' ) );
// save
add_filter( 'wp_insert_post_empty_content', array( $this, 'wp_insert_post_empty_content' ), 10, 1 );
add_action( 'save_post', array( $this, 'save_post' ), 10, 2 );
}
/**
* Initialize.
*
* Sets up Form functionality.
*
* @date 19/9/18
* @since ACF 5.7.6.7.6
*
* @return void
*/
public function initialize() {
// globals
global $typenow;
$acf_post_types = acf_get_internal_post_types();
foreach ( $acf_post_types as $post_type ) {
remove_meta_box( 'submitdiv', $post_type, 'side' );
}
// restrict specific post types
$restricted = array_merge( $acf_post_types, array( 'acf-taxonomy', 'attachment' ) );
if ( in_array( $typenow, $restricted ) ) {
return;
}
// enqueue scripts
acf_enqueue_scripts(
array(
'uploader' => true,
)
);
// actions
add_action( 'add_meta_boxes', array( $this, 'add_meta_boxes' ), 10, 2 );
}
/**
* Checks if a field group is assigned to blocks.
*
* Block field groups should not be rendered as metaboxes because:
* 1. They are managed by the block editor (blocks v3)
* 2. They have their own validation system via AJAX
* 3. Rendering them as metaboxes causes duplicate validation on post save
*
* @since SCF 6.6.0
*
* @param array $field_group The field group array.
* @return bool True if field group is for blocks, false otherwise.
*/
public function is_block_field_group( $field_group ) {
if ( empty( $field_group['location'] ) ) {
return false;
}
// Check each location group
foreach ( $field_group['location'] as $location_group ) {
foreach ( $location_group as $rule ) {
if ( isset( $rule['param'] ) && 'block' === $rule['param'] ) {
return true;
}
}
}
return false;
}
/**
*
* Adds ACF metaboxes for the given $post_type and $post.
*
* @date 19/9/18
* @since ACF 5.7.6.7.6
*
* @param string $post_type The post type.
* @param WP_Post $post The post being edited.
* @return void
*/
public function add_meta_boxes( $post_type, $post ) {
// Storage for localized postboxes.
$postboxes = array();
// Get field groups for this screen.
$field_groups = acf_get_field_groups(
array(
'post_id' => $post->ID,
'post_type' => $post_type,
)
);
// Loop over field groups.
if ( $field_groups ) {
foreach ( $field_groups as $field_group ) {
// Skip block field groups - they are managed by the block editor
if ( $this->is_block_field_group( $field_group ) ) {
continue;
}
$id = esc_attr( "acf-{$field_group['key']}" );
$context = esc_attr( $field_group['position'] );
$priority = 'high';
// Reduce priority for sidebar metaboxes for best position.
if ( 'side' === $context ) {
$priority = 'core';
}
/**
* Filters the metabox priority.
*
* @date 23/06/12
* @since ACF 3.1.8.1.8
*
* @param string $priority The metabox priority (high, core, default, low).
* @param array $field_group The field group array.
*/
$priority = apply_filters( 'acf/input/meta_box_priority', $priority, $field_group );
// Localize data
$postboxes[] = array(
'id' => $id,
'key' => esc_attr( $field_group['key'] ),
'style' => esc_attr( $field_group['style'] ),
'label' => esc_attr( $field_group['label_placement'] ),
'edit' => esc_url( acf_get_field_group_edit_link( $field_group['ID'] ) ),
);
// Add the meta box.
add_meta_box(
$id,
acf_esc_html( acf_get_field_group_title( $field_group ) ),
array( $this, 'render_meta_box' ),
$post_type,
$context,
$priority,
array( 'field_group' => $field_group )
);
}
// Set style from first field group.
$this->style = acf_get_field_group_style( $field_groups[0] );
// Localize postboxes.
acf_localize_data(
array(
'postboxes' => $postboxes,
)
);
}
// remove postcustom metabox (removes expensive SQL query)
if ( acf_get_setting( 'remove_wp_meta_box' ) ) {
remove_meta_box( 'postcustom', false, 'normal' );
}
// Add hidden input fields.
add_action( 'edit_form_after_title', array( $this, 'edit_form_after_title' ) );
/**
* Fires after metaboxes have been added.
*
* @date 13/12/18
* @since ACF 5.8.0.8.0
*
* @param string $post_type The post type.
* @param WP_Post $post The post being edited.
* @param array $field_groups The field groups added.
*/
do_action( 'acf/add_meta_boxes', $post_type, $post, $field_groups );
}
/**
* Called after the title and before the content editor to render the after title metaboxes.
* Also renders the CSS required to hide the "hide-on-screen" elements on the page based on the field group settings.
*
* @since ACF 5.7.6.7.6
*/
public function edit_form_after_title() {
// globals
global $post;
// render post data
acf_form_data(
array(
'screen' => 'post',
'post_id' => $post->ID,
)
);
// render 'acf_after_title' metaboxes
do_meta_boxes( get_current_screen(), 'acf_after_title', $post );
$style = '';
if ( is_string( $this->style ) ) {
$style = $this->style;
}
// Render dynamic field group style, using wp_strip_all_tags as this is filterable, but should only contain valid styles and no html.
echo '<style type="text/css" id="acf-style">' . wp_strip_all_tags( $style ) . '</style>'; //phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- CSS only, escaped by wp_strip_all_tags.
}
/**
* Renders the ACF metabox HTML.
*
* @date 19/9/18
* @since ACF 5.7.6.7.6
*
* @param WP_Post $post The post being edited.
* @param array $metabox The add_meta_box() args.
* @return void
*/
public function render_meta_box( $post, $metabox ) {
// vars
$id = $metabox['id'];
$field_group = $metabox['args']['field_group'];
// Render fields.
$fields = acf_get_fields( $field_group );
acf_render_fields( $fields, $post->ID, 'div', $field_group['instruction_placement'] );
}
/**
*
* Allows WP to insert a new post without title or post_content if ACF data exists.
*
* @date 16/07/2014
* @since ACF 5.0.1.0.1
*
* @param boolean $maybe_empty Whether the post should be considered "empty".
* @return boolean
*/
public function wp_insert_post_empty_content( $maybe_empty ) {
// Return false and allow insert if '_acf_changed' exists.
if ( $maybe_empty && acf_maybe_get_POST( '_acf_changed' ) ) {
return false;
}
return $maybe_empty;
}
/**
* Checks if the $post is allowed to be saved.
* Used to avoid triggering "acf/save_post" on dynamically created posts during save.
*
* @type function
* @date 26/06/2016
* @since ACF 5.3.8.3.8
*
* @param WP_Post $post The post to check.
* @return boolean
*/
public function allow_save_post( $post ) {
$allow = true;
// Restricted post types.
$restrict = array( 'auto-draft', 'revision', 'acf-field', 'acf-field-group' );
if ( in_array( $post->post_type, $restrict, true ) ) {
$allow = false;
}
// Disallow if the $_POST ID value does not match the $post->ID.
$form_post_id = (int) acf_maybe_get_POST( 'post_ID' );
if ( $form_post_id && $form_post_id !== $post->ID ) {
$allow = false;
}
// Revision (preview).
if ( 'revision' === $post->post_type ) {
// allow if doing preview and this $post is a child of the $_POST ID
if ( 'dopreview' === acf_maybe_get_POST( 'wp-preview' ) && $form_post_id === $post->post_parent ) {
$allow = true;
}
}
return $allow;
}
/**
* Triggers during the 'save_post' action to save the $_POST data.
*
* @since ACF 1.0.0.0.0
*
* @param integer $post_id The post ID.
* @param WP_Post $post The post object.
* @return void
*/
public function save_post( $post_id, $post ) {
// Bail early if not allowed to save this post type.
if ( ! $this->allow_save_post( $post ) ) {
return;
}
// Verify nonce.
if ( ! acf_verify_nonce( 'post' ) ) {
return;
}
// Validate for published post (allow draft to save without validation).
if ( 'publish' === $post->post_status ) {
// Bail early if validation fails.
if ( ! acf_validate_save_post() ) {
return;
}
}
acf_save_post( $post_id );
// We handle revisions differently on WP 6.4+.
if ( version_compare( get_bloginfo( 'version' ), '6.4', '<' ) && post_type_supports( $post->post_type, 'revisions' ) ) {
acf_save_post_revision( $post_id );
}
}
}
acf_new_instance( 'ACF_Form_Post' );
endif;