NEW On a form to send an email, we show all emails of contacts of object

ChangeLog

@@ -9,7 +9,7 @@ English Dolibarr ChangeLog
 For users:
 ---------------
 
-NEW: PHP 8.1 compatibility. 
+NEW: PHP 8.1 compatibility:
      Warning: Application works correctly with PHP8 and 8.1 but you may experience a lot of PHP warning into the PHP server log files (depending 
      on the PHP setup). Removal of all PHP warnings on server side is planned for v17.
 NEW: Support for recurring purchase invoices.
@@ -121,6 +121,7 @@ NEW: Ticket triggers: allow to automatically send messages on new tickets
 NEW: Accountancy - Add hidden feature for accounting reconciliation
 NEW: Can store the session into database (instead of beeing managed by PHP)
 NEW: Added MMK currency (Myanmar Kyat)
+NEW: On a form to send an email, we show all emails of contacts of object
 
  Modules
 NEW: Module Partnership Management

htdocs/core/tpl/card_presend.tpl.php

@@ -147,7 +147,7 @@ if ($action == 'presend') {
 	$formmail->trackid = $trackid;
 	$formmail->withfrom = 1;
 
-	// Fill list of recipient with email inside <>.
+	// Define $liste, a list of recipients with email inside <>.
 	$liste = array();
 	if ($object->element == 'expensereport') {
 		$fuser = new User($db);
@@ -193,16 +193,6 @@ if ($action == 'presend') {
 		}
 	}
 
-	$formmail->withto = $liste;
-	$formmail->withtofree = (GETPOST('sendto', 'alphawithlgt') ? GETPOST('sendto', 'alphawithlgt') : '1');
-	$formmail->withtocc = $liste;
-	$formmail->withtoccc = getDolGlobalString('MAIN_EMAIL_USECCC');
-	$formmail->withtopic = $topicmail;
-	$formmail->withfile = 2;
-	$formmail->withbody = 1;
-	$formmail->withdeliveryreceipt = 1;
-	$formmail->withcancel = 1;
-
 	//$arrayoffamiliestoexclude=array('system', 'mycompany', 'object', 'objectamount', 'date', 'user', ...);
 	if (!isset($arrayoffamiliestoexclude)) {
 		$arrayoffamiliestoexclude = null;
@@ -210,6 +200,7 @@ if ($action == 'presend') {
 
 	// Make substitution in email content
 	if ($object) {
+		// First we set ->substit (useless, it will be erased later) and ->substit_lines
 		$formmail->setSubstitFromObject($object, $langs);
 	}
 	$substitutionarray = getCommonSubstitutionArray($outputlangs, 0, $arrayoffamiliestoexclude, $object);
@@ -228,7 +219,7 @@ if ($action == 'presend') {
 	);
 	complete_substitutions_array($substitutionarray, $outputlangs, $object, $parameters);
 
-	// Find the good contact address
+	// Find all external contact addresses
 	$tmpobject = $object;
 	if (($object->element == 'shipping' || $object->element == 'reception')) {
 		$origin = $object->origin;
@@ -280,17 +271,46 @@ if ($action == 'presend') {
 
 	if (is_array($contactarr) && count($contactarr) > 0) {
 		require_once DOL_DOCUMENT_ROOT.'/contact/class/contact.class.php';
+		require_once DOL_DOCUMENT_ROOT.'/societe/class/societe.class.php';
 		$contactstatic = new Contact($db);
+		$tmpcompany = new Societe($db);
 
 		foreach ($contactarr as $contact) {
 			$contactstatic->fetch($contact['id']);
+			// Complete substitution array
 			$substitutionarray['__CONTACT_NAME_'.$contact['code'].'__'] = $contactstatic->getFullName($outputlangs, 1);
 			$substitutionarray['__CONTACT_LASTNAME_'.$contact['code'].'__'] = $contactstatic->lastname;
 			$substitutionarray['__CONTACT_FIRSTNAME_'.$contact['code'].'__'] = $contactstatic->firstname;
 			$substitutionarray['__CONTACT_TITLE_'.$contact['code'].'__'] = $contactstatic->getCivilityLabel();
+
+			// Complete $liste with the $contact
+			if (empty($liste[$contact['id']])) {	// If this contact id not already into the $liste
+				$contacttoshow = '';
+				if (isset($object->thirdparty) && is_object($object->thirdparty)) {
+					if ($contactstatic->fk_soc != $object->thirdparty->id) {
+						$tmpcompany->fetch($contactstatic->fk_soc);
+						if ($tmpcompany->id > 0) {
+							$contacttoshow .= $tmpcompany->name.': ';
+						}
+					}
+				}
+				$contacttoshow .= $contactstatic->getFullName($outputlangs, 1);
+				$contacttoshow .= " <".($contactstatic->email ? $contactstatic->email : $langs->transnoentitiesnoconv("NoEMail")) .">";
+				$liste[$contact['id']] = $contacttoshow;
+			}
 		}
 	}
 
+	$formmail->withto = $liste;
+	$formmail->withtofree = (GETPOST('sendto', 'alphawithlgt') ? GETPOST('sendto', 'alphawithlgt') : '1');
+	$formmail->withtocc = $liste;
+	$formmail->withtoccc = getDolGlobalString('MAIN_EMAIL_USECCC');
+	$formmail->withtopic = $topicmail;
+	$formmail->withfile = 2;
+	$formmail->withbody = 1;
+	$formmail->withdeliveryreceipt = 1;
+	$formmail->withcancel = 1;
+
 	// Array of substitutions
 	$formmail->substit = $substitutionarray;