在发送电子邮件确认之前必须创建并保留用户的情况下，是否可以在如下所示的Domain服务中实现此行为：
$request = "SELECT * FROM " . $DB_tname . " ORDER BY score DESC LIMIT 10";
$result = mysqli_query($connection, $request);
$numRows = mysqli_num_rows($result);
<?php
require "config.php";
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="description" content="Here you can see the best players of the week.">
<title><?php echo $winTitle; ?></title>
<!-- Bootstrap Core CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css">
<style>
html,
body {
width: 100%;
height: 100%;
overflow-x:hidden;
}
body {
font-family: "Source Sans Pro","Helvetica Neue",Helvetica,Arial,sans-serif;
}
/* Header */
.scrollable
{
position: flex;
overflow: auto;
}
.header {
display: table;
position: relative;
width: 100%;
height: 100%;
background: url(<?php echo $Background; ?>) no-repeat center center scroll;
-webkit-background-size: cover;
-moz-background-size: cover;
background-size: cover;
-o-background-size: cover;
}
</style>
<link href="http://fonts.googleapis.com/css?family=Source+Sans+Pro:300,400,700,300italic,400italic,700italic" rel="stylesheet" type="text/css">
<!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
<!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
<!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/libs/html5shiv/3.7.0/html5shiv.js"></script>
<script src="https://oss.maxcdn.com/libs/respond.js/1.4.2/respond.min.js"></script>
<![endif]-->
</head>
<body>
<!-- Header -->
<header id="top" class="header">
<div class="row">
<br><br><br><br><br>
<div class="col-md-8 col-md-offset-2">
<div id="topModal" class="modal show scrollable" tabindex="-1" role="dialog" aria-hidden="true">
<div style="width: 65%;" class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<h1 class="text-center">Top Players</h1>
</div>
<div class="modal-body">
<table class="table table-hover table-bordered">
<tr>
<th style="width: 5%">Rank</th>
<th>Name</th>
<th style="width: 15%">Score</th>
<th style="width: 10%">Deaths</th>
<th style="width: 15%">Onlinetime H:M</th>
</tr>
<?php
function toStd($sekunden)
{
$stunden = floor($sekunden / 3600);
$minuten = floor(($sekunden - ($stunden * 3600)) / 60);
$sekunden = round($sekunden - ($stunden * 3600) - ($minuten * 60), 0);
if ($stunden <= 9) {
$strStunden = "0" . $stunden;
} else {
$strStunden = $stunden;
}
if ($minuten <= 9) {
$strMinuten = "0" . $minuten;
} else {
$strMinuten = $minuten;
}
return "$strStunden:$strMinuten";
}
$DB_Server = ""; //MySQL IP
$DB_User = ""; //MySQL user
$DB_Pw = ""; //MySQL password
$DB_Db = ""; //Database name
$DB_tname = "bestplayers"; //Table name (will be created)
$connection = mysqli_connect($DB_Server, $DB_User, $DB_Pw)
or die("Connection failed! Check your MySQL details!");
$request = "SELECT * FROM " . $DB_tname . " ORDER BY score DESC LIMIT 10";
$result = mysqli_query($connection, $request);
$numRows = mysqli_num_rows($result);
$i1 = 0;
$i2 = 1;
while ($i1 < $numRows && $i1 < 10) {
$row = mysqli_fetch_row($connection, $result);
$username = $row[4];
if($username == ""){
$username = "Nobody";
}
if($i1 == 0){
echo '<tr class="success">';
}else{
echo '<tr>';
}
echo '<td>' . $i2 . '</td>';
echo '<td>' . $username . '</td>';
echo '<td>' . $row[1] . '</td>';
echo '<td>' . $row[7] . '</td>';
echo '<td>' . toStd($row[5]) . '</td>';
echo '</tr>';
$i2++;
$i1++;
}
$request = "SELECT * FROM " . $DB_tname . " WHERE iswp = 1";
$request_run = mysqli_query($connection, $request);
var_dump(mysqli_error($connection));
//$result = mysqli_query($connection, $request);
$row = mysqli_fetch_row($request_run);
$history = explode(", ", $row[3]);
$pthistory = explode(", ", $row[6]);
$deathhistory = explode(", ", $row[8]);
if($history[0] == ""){
$history[0] = 0;
}
if($deathhistory[0] == ""){
$deathhistory[0] = 0;
}
if( !isset($row[4])){
$wpnick = "Nobody";
}else{
$wpnick = $row[4];
}
?>
</table>
<div class="panel panel-success">
<div class="panel-body">
<b>Player of the week: </b><a href=<?php echo '"http://steamcommunity.com/profiles/' . $row[0] . '">'; echo $wpnick; ?></a>  ( with <b><?php echo $history[0]; ?></b> score, <b><?php echo $deathhistory[0]; ?></b> deaths and <b><?php echo toStd($pthistory[0]); ?></b> onlinetime )
</div>
</div>
<div class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">
<a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion" href="#collapse1">Information</a>
</h4>
</div>
<div id="collapse1" class="panel-collapse collapse">
<div class="panel-body">
<?php echo $InfoText; ?>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</header>
<!-- jQuery -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<!-- Bootstrap Core JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/js/bootstrap.min.js"></script>
</body>
</html>
答案 0 :(得分：2)
通常实践的机制是不让域服务与基础结构交互-它们通常不处理事务和工作单元。它们与聚合一起属于域模型层，处理复杂的用例，这些用例通常涉及多个聚合，并且应避免基础结构方面的问题，包括持久性和通知。
应用程序服务应该是从事这项工作的人。他们应该调用“域”模型层（无论是服务还是聚合），收集更改的项，并作为事务处理持久性。
在您的示例中，您可能应该将UserService视为应用程序服务，在factory method中调用User Aggregate来创建一个新的用户对象，然后在repository。
现在好了：
我过去使用的一个有趣的模式是将通知（例如发送电子邮件）作为工作单元本身的一部分。 UoW不仅提交所有数据更改，而且还负责调度“已注册”通知。成功提交后，您只需注册/提交通知，然后让UoW进行实际发送。
更好的模式是发布一个具有相关详细信息的事件，并使用订阅者来构造和分发通知。