gpdtc-recalc.php: Migrated from experimental folder.

gp-date-time-calculator/gpdtc-recalc.php

@@ -0,0 +1,31 @@
+<?php
+/**
+ * Gravity Perks // Date Time Calculator // Recalculate Field Value on View
+ * https://gravitywiz.com/documentation/gravity-forms-date-time-calculator/
+ *
+ * Experimental Snippet 🧪
+ *
+ * Recalculate a calculated field's value every time it's viewed.
+ *
+ * Works great with Date Time Calculator's [:age modifier][1].
+ *
+ * [1]: https://gravitywiz.com/documentation/gravity-forms-date-time-calculator/#calculating-age
+ */
+add_action( 'wp_loaded', function() {
+
+	$form_id  = 123;  // Change this to the form's ID
+	$field_id = 4; // Change this to the Calculation field's ID.
+
+	$values = array();
+
+	add_filter( sprintf( 'gform_get_input_value_%s', $form_id ), function( $value, $entry, $field, $input_id ) use ( $field_id, &$values ) {
+		if ( $field['id'] !== $field_id ) {
+			$values[ $field['id'] ] = $value;
+			return $value;
+		}
+		$form   = GFAPI::get_form( $entry['form_id'] );
+		$_entry = $entry + $values;
+		return GFCommon::calculate( $field, $form, $_entry );
+	}, 10, 4 );
+
+} );