<?php
if( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly
if( ! class_exists('acf_form_front') ) :
class acf_form_front {
/** @var array An array of registered form settings */
private $forms = array();
/** @var array An array of default fields */
public $fields = array();
/*
* __construct
*
* This function will setup the class functionality
*
* @type function
* @date 5/03/2014
* @since 5.0.0
*
* @param n/a
* @return n/a
*/
function __construct() {
// vars
$this->fields = array(
'_post_title' => array(
'prefix' => 'acf',
'name' => '_post_title',
'key' => '_post_title',
'label' => __('Title', 'acf'),
'type' => 'text',
'required' => true,
),
'_post_content' => array(
'prefix' => 'acf',
'name' => '_post_content',
'key' => '_post_content',
'label' => __('Content', 'acf'),
'type' => 'wysiwyg',
),
'_validate_email' => array(
'prefix' => 'acf',
'name' => '_validate_email',
'key' => '_validate_email',
'label' => __('Validate Email', 'acf'),
'type' => 'text',
'value' => '',
'wrapper' => array('style' => 'display:none !important;')
)
);
// actions
add_action('acf/validate_save_post', array($this, 'validate_save_post'), 1);
// filters
add_filter('acf/pre_save_post', array($this, 'pre_save_post'), 5, 2);
}
/*
* validate_form
*
* description
*
* @type function
* @date 28/2/17
* @since 5.5.8
*
* @param $post_id (int)
* @return $post_id (int)
*/
function validate_form( $args ) {
// defaults
// Todo: Allow message and button text to be generated by CPT settings.
$args = wp_parse_args( $args, array(
'id' => 'acf-form',
'post_id' => false,
'new_post' => false,
'field_groups' => false,
'fields' => false,
'post_title' => false,
'post_content' => false,
'form' => true,
'form_attributes' => array(),
'return' => add_query_arg( 'updated', 'true', acf_get_current_url() ),
'html_before_fields' => '',
'html_after_fields' => '',
'submit_value' => __("Update", 'acf'),
'updated_message' => __("Post updated", 'acf'),
'label_placement' => 'top',
'instruction_placement' => 'label',
'field_el' => 'div',
'uploader' => 'wp',
'honeypot' => true,
'html_updated_message' => '<div id="message" class="updated"><p>%s</p></div>', // 5.5.10
'html_submit_button' => '<input type="submit" class="acf-button button button-primary button-large" value="%s" />', // 5.5.10
'html_submit_spinner' => '<span class="acf-spinner"></span>', // 5.5.10
'kses' => true // 5.6.5
));
$args['form_attributes'] = wp_parse_args( $args['form_attributes'], array(
'id' => $args['id'],
'class' => 'acf-form',
'action' => '',
'method' => 'post',
));
// filter post_id
$args['post_id'] = acf_get_valid_post_id( $args['post_id'] );
// new post?
if( $args['post_id'] === 'new_post' ) {
$args['new_post'] = wp_parse_args( $args['new_post'], array(
'post_type' => 'post',
'post_status' => 'draft',
));
}
// filter
$args = apply_filters('acf/validate_form', $args);
// return
return $args;
}
/*
* add_form
*
* description
*
* @type function
* @date 28/2/17
* @since 5.5.8
*
* @param $post_id (int)
* @return $post_id (int)
*/
function add_form( $args = array() ) {
// validate
$args = $this->validate_form( $args );
// append
$this->forms[ $args['id'] ] = $args;
}
/*
* get_form
*
* description
*
* @type function
* @date 28/2/17
* @since 5.5.8
*
* @param $post_id (int)
* @return $post_id (int)
*/
function get_form( $id = '' ) {
// bail early if not set
if( !isset($this->forms[ $id ]) ) return false;
// return
return $this->forms[ $id ];
}
/*
* validate_save_post
*
* This function will validate fields from the above array
*
* @type function
* @date 7/09/2016
* @since 5.4.0
*
* @param $post_id (int)
* @return $post_id (int)
*/
function validate_save_post() {
// register field if isset in $_POST
foreach( $this->fields as $k => $field ) {
// bail early if no in $_POST
if( !isset($_POST['acf'][ $k ]) ) continue;
// register
acf_add_local_field($field);
}
// honeypot
if( !empty($_POST['acf']['_validate_email']) ) {
acf_add_validation_error( '', __('Spam Detected', 'acf') );
}
}
/*
* pre_save_post
*
* description
*
* @type function
* @date 7/09/2016
* @since 5.4.0
*
* @param $post_id (int)
* @return $post_id (int)
*/
function pre_save_post( $post_id, $form ) {
// vars
$save = array(
'ID' => 0
);
// determine save data
if( is_numeric($post_id) ) {
// update post
$save['ID'] = $post_id;
} elseif( $post_id == 'new_post' ) {
// merge in new post data
$save = array_merge($save, $form['new_post']);
} else {
// not post
return $post_id;
}
// save post_title
if( isset($_POST['acf']['_post_title']) ) {
$save['post_title'] = acf_extract_var($_POST['acf'], '_post_title');
}
// save post_content
if( isset($_POST['acf']['_post_content']) ) {
$save['post_content'] = acf_extract_var($_POST['acf'], '_post_content');
}
// honeypot
if( !empty($_POST['acf']['_validate_email']) ) return false;
// validate
if( count($save) == 1 ) {
return $post_id;
}
// save
if( $save['ID'] ) {
wp_update_post( $save );
} else {
$post_id = wp_insert_post( $save );
}
// return
return $post_id;
}
/*
* enqueue
*
* This function will enqueue a form
*
* @type function
* @date 7/09/2016
* @since 5.4.0
*
* @param $post_id (int)
* @return $post_id (int)
*/
function enqueue_form() {
// check
$this->check_submit_form();
// load acf scripts
acf_enqueue_scripts();
}
/*
* check_submit_form
*
* This function will maybe submit form data
*
* @type function
* @date 3/3/17
* @since 5.5.10
*
* @param n/a
* @return n/a
*/
function check_submit_form() {
// Verify nonce.
if( !acf_verify_nonce('acf_form') ) {
return false;
}
// Confirm form was submit.
if( !isset($_POST['_acf_form']) ) {
return false;
}
// Load registered form using id.
$form = $this->get_form( $_POST['_acf_form'] );
// Fallback to encrypted JSON.
if( !$form ) {
$form = json_decode( acf_decrypt($_POST['_acf_form']), true );
if( !$form ) {
return false;
}
}
// Run kses on all $_POST data.
if( $form['kses'] && isset($_POST['acf']) ) {
$_POST['acf'] = wp_kses_post_deep( $_POST['acf'] );
}
// Validate data and show errors.
// Todo: Return WP_Error and show above form, keeping input values.
acf_validate_save_post( true );
// Submit form.
$this->submit_form( $form );
}
/*
* submit_form
*
* This function will submit form data
*
* @type function
* @date 3/3/17
* @since 5.5.10
*
* @param n/a
* @return n/a
*/
function submit_form( $form ) {
// filter
$form = apply_filters('acf/pre_submit_form', $form);
// vars
$post_id = acf_maybe_get($form, 'post_id', 0);
// add global for backwards compatibility
$GLOBALS['acf_form'] = $form;
// allow for custom save
$post_id = apply_filters('acf/pre_save_post', $post_id, $form);
// save
acf_save_post( $post_id );
// restore form (potentially modified)
$form = $GLOBALS['acf_form'];
// action
do_action('acf/submit_form', $form, $post_id);
// vars
$return = acf_maybe_get($form, 'return', '');
// redirect
if( $return ) {
// update %placeholders%
$return = str_replace('%post_id%', $post_id, $return);
$return = str_replace('%post_url%', get_permalink($post_id), $return);
// redirect
wp_redirect( $return );
exit;
}
}
/*
* render
*
* description
*
* @type function
* @date 7/09/2016
* @since 5.4.0
*
* @param $post_id (int)
* @return $post_id (int)
*/
function render_form( $args = array() ) {
// Vars.
$is_registered = false;
$field_groups = array();
$fields = array();
// Allow form settings to be directly provided.
if( is_array($args) ) {
$args = $this->validate_form( $args );
// Otherwise, lookup registered form.
} else {
$is_registered = true;
$args = $this->get_form( $args );
if( !$args ) {
return false;
}
}
// Extract vars.
$post_id = $args['post_id'];
// Prevent ACF from loading values for "new_post".
if( $post_id === 'new_post' ) {
$post_id = false;
}
// Set uploader type.
acf_update_setting('uploader', $args['uploader']);
// Register local fields.
foreach( $this->fields as $k => $field ) {
acf_add_local_field($field);
}
// Append post_title field.
if( $args['post_title'] ) {
$_post_title = acf_get_field('_post_title');
$_post_title['value'] = $post_id ? get_post_field('post_title', $post_id) : '';
$fields[] = $_post_title;
}
// Append post_content field.
if( $args['post_content'] ) {
$_post_content = acf_get_field('_post_content');
$_post_content['value'] = $post_id ? get_post_field('post_content', $post_id) : '';
$fields[] = $_post_content;
}
// Load specific fields.
if( $args['fields'] ) {
// Lookup fields using $strict = false for better compatibility with field names.
foreach( $args['fields'] as $selector ) {
$fields[] = acf_maybe_get_field( $selector, $post_id, false );
}
// Load specific field groups.
} elseif( $args['field_groups'] ) {
foreach( $args['field_groups'] as $selector ) {
$field_groups[] = acf_get_field_group( $selector );
}
// Load fields for the given "new_post" args.
} elseif( $args['post_id'] == 'new_post' ) {
$field_groups = acf_get_field_groups( $args['new_post'] );
// Load fields for the given "post_id" arg.
} else {
$field_groups = acf_get_field_groups(array(
'post_id' => $args['post_id']
));
}
// load fields from the found field groups.
if( $field_groups ) {
foreach( $field_groups as $field_group ) {
$_fields = acf_get_fields( $field_group );
if( $_fields ) {
foreach( $_fields as $_field ) {
$fields[] = $_field;
}
}
}
}
// Add honeypot field.
if( $args['honeypot'] ) {
$fields[] = acf_get_field('_validate_email');
}
// Display updated_message
if( !empty($_GET['updated']) && $args['updated_message'] ) {
printf( $args['html_updated_message'], $args['updated_message'] );
}
// display form
if( $args['form'] ): ?>
<form <?php echo acf_esc_attrs( $args['form_attributes'] ); ?>>
<?php endif;
// Render hidde form data.
acf_form_data(array(
'screen' => 'acf_form',
'post_id' => $args['post_id'],
'form' => $is_registered ? $args['id'] : acf_encrypt(json_encode($args))
));
?>
<div class="acf-fields acf-form-fields -<?php echo esc_attr($args['label_placement']); ?>">
<?php echo $args['html_before_fields']; ?>
<?php acf_render_fields( $fields, $post_id, $args['field_el'], $args['instruction_placement'] ); ?>
<?php echo $args['html_after_fields']; ?>
</div>
<?php if( $args['form'] ): ?>
<div class="acf-form-submit">
<?php printf( $args['html_submit_button'], $args['submit_value'] ); ?>
<?php echo $args['html_submit_spinner']; ?>
</div>
</form>
<?php endif;
}
}
// initialize
acf()->form_front = new acf_form_front();
endif; // class_exists check
/*
* Functions
*
* alias of acf()->form->functions
*
* @type function
* @date 11/06/2014
* @since 5.0.0
*
* @param n/a
* @return n/a
*/
function acf_form_head() {
acf()->form_front->enqueue_form();
}
function acf_form( $args = array() ) {
acf()->form_front->render_form( $args );
}
function acf_get_form( $id = '' ) {
return acf()->form_front->get_form( $id );
}
function acf_register_form( $args ) {
acf()->form_front->add_form( $args );
}
?>