From 5dac9aa61600078dbd682dae2985a8d14cb64667 Mon Sep 17 00:00:00 2001
From: Nikita Sinelnikov <nsinelnikov.work@gmail.com>
Date: Mon, 27 Mar 2023 15:11:43 +0300
Subject: [PATCH] - reviewed #1143;

---
 includes/core/class-fields.php | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/includes/core/class-fields.php b/includes/core/class-fields.php
index b33c5e71..5b834900 100644
--- a/includes/core/class-fields.php
+++ b/includes/core/class-fields.php
@@ -2688,7 +2688,14 @@ if ( ! class_exists( 'um\core\Fields' ) ) {
 					// Normalise date format.
 					$value = $this->field_value( $key, $default, $data );
 					if ( $value ) {
-						$value = date( 'Y-m-d', strtotime( $value ) );
+						// numeric (either unix or YYYYMMDD). ACF uses Ymd format of date inside the meta tables.
+						if ( is_numeric( $value ) && strlen( $value ) !== 8 ) {
+							$unixtimestamp = $value;
+						} else {
+							$unixtimestamp = strtotime( $value );
+						}
+						// Ultimate Member date field stores the date in metatable in the format Y/m/d. Convert to it before echo.
+						$value = date( 'Y/m/d', $unixtimestamp );
 					}
 
 					$output .= '<input  ' . $disabled . '  class="' . $this->get_class( $key, $data ) . '" type="' . esc_attr( $input ) . '" name="' . esc_attr( $key . UM()->form()->form_suffix ) . '" id="' . esc_attr( $key . UM()->form()->form_suffix ) . '" value="' . esc_attr( $value ) . '" placeholder="' . esc_attr( $placeholder ) . '" data-validate="' . esc_attr( $validate ) . '" data-key="' . esc_attr( $key ) . '" data-range="' . esc_attr( $range ) . '" data-years="' . esc_attr( $years ) . '" data-years_x="' . esc_attr( $years_x ) . '" data-disabled_weekdays="' . esc_attr( $disabled_weekdays ) . '" data-date_min="' . esc_attr( $date_min ) . '" data-date_max="' . esc_attr( $date_max ) . '" data-format="' . esc_attr( $js_format ) . '" data-value="' . esc_attr( $value ) . '" />