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<?php
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
/**
* Dropdown field.
*
* @since 1.0.0
*/
class WPForms_Field_Select extends WPForms_Field {
/**
* Choices JS version.
*
* @since 1.6.3
*/
const CHOICES_VERSION = '10.2.0';
/**
* Classic (old) style.
*
* @since 1.6.1
*
* @var string
*/
const STYLE_CLASSIC = 'classic';
/**
* Modern style.
*
* @since 1.6.1
*
* @var string
*/
const STYLE_MODERN = 'modern';
/**
* Primary class constructor.
*
* @since 1.0.0
*/
public function init() {
// Define field type information.
$this->name = esc_html__( 'Dropdown', 'wpforms-lite' );
$this->keywords = esc_html__( 'choice', 'wpforms-lite' );
$this->type = 'select';
$this->icon = 'fa-caret-square-o-down';
$this->order = 70;
$this->defaults = [
1 => [
'label' => esc_html__( 'First Choice', 'wpforms-lite' ),
'value' => '',
'default' => '',
],
2 => [
'label' => esc_html__( 'Second Choice', 'wpforms-lite' ),
'value' => '',
'default' => '',
],
3 => [
'label' => esc_html__( 'Third Choice', 'wpforms-lite' ),
'value' => '',
'default' => '',
],
];
// Define additional field properties.
add_filter( 'wpforms_field_properties_' . $this->type, [ $this, 'field_properties' ], 5, 3 );
// Form frontend CSS enqueues.
add_action( 'wpforms_frontend_css', [ $this, 'enqueue_frontend_css' ] );
// Form frontend JS enqueues.
add_action( 'wpforms_frontend_js', [ $this, 'enqueue_frontend_js' ] );
add_action( 'enqueue_block_editor_assets', [ $this, 'enqueue_block_editor_assets' ] );
}
/**
* Define additional field properties.
*
* @since 1.5.0
*
* @param array $properties Field properties.
* @param array $field Field settings.
* @param array $form_data Form data and settings.
*
* @return array
*/
public function field_properties( $properties, $field, $form_data ) {
// Remove primary input.
unset( $properties['inputs']['primary'] );
// Define data.
$form_id = absint( $form_data['id'] );
$field_id = wpforms_validate_field_id( $field['id'] );
$choices = $field['choices'];
$dynamic = wpforms_get_field_dynamic_choices( $field, $form_id, $form_data );
if ( $dynamic !== false ) {
$choices = $dynamic;
$field['show_values'] = true;
}
// Set options container (<select>) properties.
$properties['input_container'] = [
'class' => [],
'data' => [],
'id' => "wpforms-{$form_id}-field_{$field_id}",
'attr' => [
'name' => "wpforms[fields][{$field_id}]",
],
];
// Set properties.
foreach ( $choices as $key => $choice ) {
// Used for dynamic choices.
$depth = isset( $choice['depth'] ) ? absint( $choice['depth'] ) : 1;
$properties['inputs'][ $key ] = [
'container' => [
'attr' => [],
'class' => [ "choice-{$key}", "depth-{$depth}" ],
'data' => [],
'id' => '',
],
'label' => [
'attr' => [
'for' => "wpforms-{$form_id}-field_{$field_id}_{$key}",
],
'class' => [ 'wpforms-field-label-inline' ],
'data' => [],
'id' => '',
'text' => $choice['label'],
],
'attr' => [
'name' => "wpforms[fields][{$field_id}]",
'value' => isset( $field['show_values'] ) ? $choice['value'] : $choice['label'],
],
'class' => [],
'data' => [],
'id' => "wpforms-{$form_id}-field_{$field_id}_{$key}",
'required' => ! empty( $field['required'] ) ? 'required' : '',
'default' => isset( $choice['default'] ),
];
}
// Add class that changes the field size.
if ( ! empty( $field['size'] ) ) {
$properties['input_container']['class'][] = 'wpforms-field-' . esc_attr( $field['size'] );
}
// Required class for pagebreak validation.
if ( ! empty( $field['required'] ) ) {
$properties['input_container']['class'][] = 'wpforms-field-required';
}
// Add additional class for container.
if (
! empty( $field['style'] ) &&
in_array( $field['style'], [ self::STYLE_CLASSIC, self::STYLE_MODERN ], true )
) {
$properties['container']['class'][] = "wpforms-field-select-style-{$field['style']}";
}
return $properties;
}
/**
* Field options panel inside the builder.
*
* @since 1.0.0
*
* @param array $field Field settings.
*/
public function field_options( $field ) {
/*
* Basic field options.
*/
// Options open markup.
$this->field_option(
'basic-options',
$field,
[
'markup' => 'open',
]
);
// Label.
$this->field_option( 'label', $field );
// Choices.
$this->field_option( 'choices', $field );
// AI Feature.
$this->field_option(
'ai_modal_button',
$field,
[
'value' => esc_html__( 'Generate Choices', 'wpforms-lite' ),
'type' => 'choices',
]
);
// Description.
$this->field_option( 'description', $field );
// Required toggle.
$this->field_option( 'required', $field );
// Options close markup.
$this->field_option(
'basic-options',
$field,
[
'markup' => 'close',
]
);
/*
* Advanced field options.
*/
// Options open markup.
$this->field_option(
'advanced-options',
$field,
[
'markup' => 'open',
]
);
// Show Values toggle option. This option will only show if already used
// or if manually enabled by a filter.
if ( ! empty( $field['show_values'] ) || wpforms_show_fields_options_setting() ) {
$show_values = $this->field_element(
'toggle',
$field,
[
'slug' => 'show_values',
'value' => isset( $field['show_values'] ) ? $field['show_values'] : '0',
'desc' => esc_html__( 'Show Values', 'wpforms-lite' ),
'tooltip' => esc_html__( 'Check this option to manually set form field values.', 'wpforms-lite' ),
],
false
);
$this->field_element(
'row',
$field,
[
'slug' => 'show_values',
'content' => $show_values,
]
);
}
// Multiple options selection.
$fld = $this->field_element(
'toggle',
$field,
[
'slug' => 'multiple',
'value' => ! empty( $field['multiple'] ),
'desc' => esc_html__( 'Multiple Options Selection', 'wpforms-lite' ),
'tooltip' => esc_html__( 'Allow users to select multiple choices in this field.', 'wpforms-lite' ) . '<br>' .
sprintf(
wp_kses( /* translators: %s - URL to WPForms.com doc article. */
esc_html__( 'For details, including how this looks and works for your site\'s visitors, please check out <a href="%s" target="_blank" rel="noopener noreferrer">our doc</a>.', 'wpforms-lite' ),
[
'a' => [
'href' => [],
'target' => [],
'rel' => [],
],
]
),
esc_url( wpforms_utm_link( 'https://wpforms.com/docs/how-to-allow-multiple-selections-to-a-dropdown-field-in-wpforms/', 'Field Options', 'Multiple Options Selection Documentation' ) )
),
],
false
);
$this->field_element(
'row',
$field,
[
'slug' => 'multiple',
'content' => $fld,
]
);
// Style.
$lbl = $this->field_element(
'label',
$field,
[
'slug' => 'style',
'value' => esc_html__( 'Style', 'wpforms-lite' ),
'tooltip' => esc_html__( 'Classic style is the default one generated by your browser. Modern has a fresh look and displays all selected options in a single row.', 'wpforms-lite' ),
],
false
);
$fld = $this->field_element(
'select',
$field,
[
'slug' => 'style',
'value' => ! empty( $field['style'] ) ? $field['style'] : self::STYLE_CLASSIC,
'options' => [
self::STYLE_CLASSIC => esc_html__( 'Classic', 'wpforms-lite' ),
self::STYLE_MODERN => esc_html__( 'Modern', 'wpforms-lite' ),
],
],
false
);
$this->field_element(
'row',
$field,
[
'slug' => 'style',
'content' => $lbl . $fld,
]
);
// Size.
$this->field_option( 'size', $field );
// Placeholder.
$this->field_option( 'placeholder', $field );
// Dynamic choice auto-populating toggle.
$this->field_option( 'dynamic_choices', $field );
// Dynamic choice source.
$this->field_option( 'dynamic_choices_source', $field );
// Custom CSS classes.
$this->field_option( 'css', $field );
// Hide label.
$this->field_option( 'label_hide', $field );
// Options close markup.
$this->field_option(
'advanced-options',
$field,
[
'markup' => 'close',
]
);
}
/**
* Field preview inside the builder.
*
* @since 1.0.0
* @since 1.6.1 Added a `Modern` style select support.
*
* @param array $field Field settings.
*/
public function field_preview( $field ) {
$args = [];
// Label.
$this->field_preview_option( 'label', $field );
// Prepare arguments.
$args['modern'] = false;
if (
! empty( $field['style'] ) &&
self::STYLE_MODERN === $field['style']
) {
$args['modern'] = true;
$args['class'] = 'choicesjs-select';
}
// Choices.
$this->field_preview_option( 'choices', $field, $args );
// Description.
$this->field_preview_option( 'description', $field );
}
/**
* Field display on the form front-end and admin entry edit page.
*
* @since 1.0.0
* @since 1.5.0 Converted to a new format, where all the data are taken not from $deprecated, but field properties.
* @since 1.6.1 Added a multiple select support.
*
* @param array $field Field data and settings.
* @param array $deprecated Deprecated array of field attributes.
* @param array $form_data Form data and settings.
*/
public function field_display( $field, $deprecated, $form_data ) {
$container = $field['properties']['input_container'];
$field_placeholder = ! empty( $field['placeholder'] ) ? $field['placeholder'] : '';
$is_multiple = ! empty( $field['multiple'] );
$is_modern = ! empty( $field['style'] ) && $field['style'] === self::STYLE_MODERN;
$choices = $field['properties']['inputs'];
// Do not display the field with empty choices on the frontend.
if ( ! $choices && ! is_admin() ) {
return;
}
// Display a warning message on Entry Edit page.
if ( ! $choices && is_admin() ) {
$this->display_empty_dynamic_choices_message( $field );
return;
}
if ( ! empty( $field['required'] ) ) {
$container['attr']['required'] = 'required';
}
// If it's a multiple select.
if ( $is_multiple ) {
$container['attr']['multiple'] = 'multiple';
// Change a name attribute.
if ( ! empty( $container['attr']['name'] ) ) {
$container['attr']['name'] .= '[]';
}
}
// Add a class for Choices.js initialization.
if ( $is_modern ) {
$container['class'][] = 'choicesjs-select';
// Add a size-class to data attribute - it is used when Choices.js is initialized.
if ( ! empty( $field['size'] ) ) {
$container['data']['size-class'] = 'wpforms-field-row wpforms-field-' . sanitize_html_class( $field['size'] );
}
$container['data']['search-enabled'] = $this->is_choicesjs_search_enabled( count( $choices ) );
}
$has_default = false;
// Check to see if any of the options were selected by default.
foreach ( $choices as $choice ) {
if ( ! empty( $choice['default'] ) ) {
$has_default = true;
break;
}
}
// Fake placeholder for Modern style.
if ( $is_modern && empty( $field_placeholder ) ) {
$first_choices = reset( $choices );
$field_placeholder = $first_choices['label']['text'];
}
// Preselect default if no other choices were marked as default.
printf(
'<select %s>',
wpforms_html_attributes( $container['id'], $container['class'], $container['data'], $container['attr'] )
);
// Optional placeholder.
if ( ! empty( $field_placeholder ) ) {
printf(
'<option value="" class="placeholder" disabled %s>%s</option>',
selected( false, $has_default || $is_multiple, false ),
esc_html( $field_placeholder )
);
}
// Build the select options.
foreach ( $choices as $key => $choice ) {
$label = $this->get_choices_label( $choice['label']['text'] ?? '', $key, $field );
$value = isset( $choice['attr']['value'] ) && ! wpforms_is_empty_string( $choice['attr']['value'] ) ? $choice['attr']['value'] : $label;
printf(
'<option value="%s" %s>%s</option>',
esc_attr( $value ),
selected( true, ! empty( $choice['default'] ), false ),
esc_html( $label )
);
}
echo '</select>';
}
/**
* Validate field.
*
* @since 1.8.2
*
* @param int $field_id Field ID.
* @param string|array $field_submit Submitted field value (raw data).
* @param array $form_data Form data and settings.
*/
public function validate( $field_id, $field_submit, $form_data ) {
$field = $form_data['fields'][ $field_id ];
// Skip validation if field is dynamic and choices are empty.
if ( $this->is_dynamic_choices_empty( $field, $form_data ) ) {
return;
}
parent::validate( $field_id, $field_submit, $form_data );
}
/**
* Format and sanitize field.
*
* @since 1.0.2
* @since 1.6.1 Added a support for multiple values.
*
* @param int $field_id Field ID.
* @param string|array $field_submit Submitted field value (selected option).
* @param array $form_data Form data and settings.
*/
public function format( $field_id, $field_submit, $form_data ) {
$field = $form_data['fields'][ $field_id ];
$dynamic = ! empty( $field['dynamic_choices'] ) ? $field['dynamic_choices'] : false;
$multiple = ! empty( $field['multiple'] );
$name = sanitize_text_field( $field['label'] );
$value = [];
// Convert submitted field value to array.
if ( ! is_array( $field_submit ) ) {
$field_submit = [ $field_submit ];
}
$value_raw = wpforms_sanitize_array_combine( $field_submit );
$data = [
'name' => $name,
'value' => '',
'value_raw' => $value_raw,
'id' => wpforms_validate_field_id( $field_id ),
'type' => $this->type,
];
if ( 'post_type' === $dynamic && ! empty( $field['dynamic_post_type'] ) ) {
// Dynamic population is enabled using post type (like for a `Checkboxes` field).
$value_raw = implode( ',', array_map( 'absint', $field_submit ) );
$data['value_raw'] = $value_raw;
$data['dynamic'] = 'post_type';
$data['dynamic_items'] = $value_raw;
$data['dynamic_post_type'] = $field['dynamic_post_type'];
$posts = [];
foreach ( $field_submit as $id ) {
$post = get_post( $id );
if ( ! is_wp_error( $post ) && ! empty( $post ) && $data['dynamic_post_type'] === $post->post_type ) {
$posts[] = esc_html( wpforms_get_post_title( $post ) );
}
}
$data['value'] = ! empty( $posts ) ? wpforms_sanitize_array_combine( $posts ) : '';
} elseif ( 'taxonomy' === $dynamic && ! empty( $field['dynamic_taxonomy'] ) ) {
// Dynamic population is enabled using taxonomy (like for a `Checkboxes` field).
$value_raw = implode( ',', array_map( 'absint', $field_submit ) );
$data['value_raw'] = $value_raw;
$data['dynamic'] = 'taxonomy';
$data['dynamic_items'] = $value_raw;
$data['dynamic_taxonomy'] = $field['dynamic_taxonomy'];
$terms = [];
foreach ( $field_submit as $id ) {
$term = get_term( $id, $field['dynamic_taxonomy'] );
if ( ! is_wp_error( $term ) && ! empty( $term ) ) {
$terms[] = esc_html( wpforms_get_term_name( $term ) );
}
}
$data['value'] = ! empty( $terms ) ? wpforms_sanitize_array_combine( $terms ) : '';
} else {
// Normal processing, dynamic population is off.
// If show_values is true, that means values posted are the raw values
// and not the labels. So we need to get the label values.
if ( ! empty( $field['show_values'] ) && (int) $field['show_values'] === 1 ) {
foreach ( $field_submit as $item ) {
foreach ( $field['choices'] as $choice ) {
if ( $item === $choice['value'] ) {
$value[] = $choice['label'];
break;
}
}
}
$data['value'] = ! empty( $value ) ? wpforms_sanitize_array_combine( $value ) : '';
} else {
$data['value'] = $value_raw;
}
}
// Backward compatibility: for single dropdown save a string, for multiple - array.
if ( ! $multiple && is_array( $data ) && ( 1 === count( $data ) ) ) {
$data = reset( $data );
}
// Push field details to be saved.
wpforms()->obj( 'process' )->fields[ $field_id ] = $data;
}
/**
* Form frontend CSS enqueues.
*
* @since 1.6.1
*
* @param array $forms Forms on the current page.
*/
public function enqueue_frontend_css( $forms ) {
$has_modern_select = false;
foreach ( $forms as $form ) {
if ( $this->is_field_style( $form, self::STYLE_MODERN ) ) {
$has_modern_select = true;
break;
}
}
if ( $has_modern_select || wpforms()->obj( 'frontend' )->assets_global() ) {
$min = wpforms_get_min_suffix();
wp_enqueue_style(
'wpforms-choicesjs',
WPFORMS_PLUGIN_URL . "assets/css/choices{$min}.css",
[],
self::CHOICES_VERSION
);
}
}
/**
* Form frontend JS enqueues.
*
* @since 1.6.1
*
* @param array $forms Forms on the current page.
*/
public function enqueue_frontend_js( $forms ) {
$has_modern_select = false;
foreach ( $forms as $form ) {
if ( $this->is_field_style( $form, self::STYLE_MODERN ) ) {
$has_modern_select = true;
break;
}
}
if ( $has_modern_select || wpforms()->obj( 'frontend' )->assets_global() ) {
$this->enqueue_choicesjs_once( $forms );
}
}
/**
* Load WPForms Gutenberg block scripts.
*
* @since 1.8.1
*/
public function enqueue_block_editor_assets() {
$min = wpforms_get_min_suffix();
wp_enqueue_style(
'wpforms-choicesjs',
WPFORMS_PLUGIN_URL . "assets/css/choices{$min}.css",
[],
self::CHOICES_VERSION
);
$this->enqueue_choicesjs_once( [] );
}
/**
* Whether the provided form has a dropdown field with a specified style.
*
* @since 1.6.1
*
* @param array $form Form data.
* @param string $style Desired field style.
*
* @return bool
*/
protected function is_field_style( $form, $style ) {
$is_field_style = false;
if ( empty( $form['fields'] ) ) {
return $is_field_style;
}
foreach ( (array) $form['fields'] as $field ) {
if (
! empty( $field['type'] ) &&
$field['type'] === $this->type &&
! empty( $field['style'] ) &&
sanitize_key( $style ) === $field['style']
) {
$is_field_style = true;
break;
}
}
return $is_field_style;
}
/**
* Get field name for an ajax error message.
*
* @since 1.6.3
*
* @param string|mixed $name Field name for error triggered.
* @param array $field Field settings.
* @param array $props List of properties.
* @param string|string[] $error Error message.
*
* @return string
* @noinspection PhpMissingReturnTypeInspection
* @noinspection ReturnTypeCanBeDeclaredInspection
*/
public function ajax_error_field_name( $name, $field, $props, $error ) {
$name = (string) $name;
if ( ! isset( $field['type'] ) || 'select' !== $field['type'] ) {
return $name;
}
if ( ! empty( $field['multiple'] ) ) {
$input = isset( $props['inputs'] ) ? end( $props['inputs'] ) : [];
return isset( $input['attr']['name'] ) ? $input['attr']['name'] . '[]' : '';
}
return $name;
}
}
new WPForms_Field_Select();
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