我正在开发一个Web应用程序，该应用程序将允许您通过表格将车手分配给货车。 您单击页面上表格中的骑手，将弹出一个对话框，选择货车，然后单击添加。我遇到的问题是我的更新语句将mysql表中的所有值都设置为null，而不是另一个表中的主键。
<div class="table-responsive" id="refresh">
<table id="mainTable" class="table m-b-0 table-hover">
<thead>
<tr>
<th>Primary Key</th>
<th>Party Name</th>
<th>Address</th>
<th>Number in Party</th>
<th>Number of Coolers</th>
<th>Phone Number</th>
<th>Time of PickUP</th>
</tr>
</thead>
<tbody>
<?php while($row = $q->fetch()):?>
<tr data-toggle="modal" data-target="#selectVan">
<td id="riderName" name="primKey">
<?php echo htmlspecialchars($row['P_Key']) ?>
</td>
<td id="riderName" name="riderName">
<?php echo htmlspecialchars($row['partyNM']) ?>
</td>
<td>
<?php echo htmlspecialchars($row['address1'])?>
</td>
<td>
<?php echo htmlspecialchars($row['numParty'])?>
</td>
<td>
<?php echo htmlspecialchars($row['numCooler'])?>
</td>
<td>
<?php echo htmlspecialchars($row['phoneNum'])?>
</td>
<td>
<?php echo htmlspecialchars($row['pickUp'])?>
</td>
</tr>
<?php endwhile; $sql=null;?>
</tbody>
<tfoot>
</tfoot>
</table>
<!--Select a van for rider-->
<div id="selectVan" class="modal fade" tabindex="-1" role="dialog" aria-labelledby="myModalLabel"
aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<h4 class="modal-title" id="myModalLabel">Select Van</h4>
<button class="btn btn-icon waves-effect waves-light btn-danger m-b-5"
type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
</div>
<div class="modal-body">
<?php
$sql = 'Select P_Key, nameVan from vanInfo where in_active=0';
$q = $dbh->query($sql);
$q->setFetchMode(PDO::FETCH_ASSOC);
?>
<form method="post" role="form" class="form-horizontal"
data-parsley-validate novalidate>
<div class="form-group row">
<select class="form-control select2" id="selectedVan" name="selectedVan">
<option>Available Vans</option>
<?php while($row = $q->fetch()):?>
<option value="<?php echo htmlspecialchars($row['nameVan']) ?>">
<?php echo htmlspecialchars($row['nameVan']) ?>
</option>
<?php endwhile;?>
</optgroup>
</select>
</div>
<div class="form-group row">
</div>
<div class="form-horizontal">
<button type="button" class="btn btn-default waves-effect m-b-5"
data-dismiss="modal">Close</button>
<button name="addRiderToVan" type="submit" class="btn btn-primary waves-effect waves-light m-b-5">Add</button>
</div>
<?php
if(isset($_POST["addRiderToVan"])){
try {
$riderKey = $_POST["primKey"];
$vanName = $_POST["selectedVan"];
$sql = "UPDATE riderInfo set van_key=(select P_Key from vanInfo where
nameVan = '$vanName' and in_active = '0') where P_Key = $riderKey";
$dbh->exec($sql);
}catch(Exception $e){
echo 'Caught exception: ', $e->getMessage(), "\n";
}
}
$sql = null;
?>
</form>
</div>
<div class="modal-footer">
</div>
我需要为选中的货车更新riderInfo van_key列，即我的vanInfo表的P_Key。
答案 0 :(得分：0)
我认为您在这里缺少很多东西。
首先编辑引入主键的选择查询。
第二，我建议您命名选择HTML项，而不是其中包含的选项。 喜欢：
<select class="form-control select2" name="selectedVan" >
第三，该选项将如下所示：
<option value="<?php echo htmlspecialchars($row['idVan']) ?>"><?php echo htmlspecialchars($row['nameVan']) ?></option>
最后，获取$ _POST [“ selectedVan”]（在上面选择）并更新数据库
$sql = "UPDATE riderInfo set van_key=$vanKey where P_Key = $riderKey";