點擊「刪除」(提交)後:我可以告訴它處理表單,因爲我收到錯誤「您忘了選擇要刪除的供應商」。html表單發佈不發送可變數據
表單本身是使用PHP生成的。當我檢查HTML輸出時,我發現的值爲。但是,當它進入POST時,沒有任何結果。我正在測試和使用本地主機,因此除了現有的操作鏈接之外,我不確定我還能修改哪些內容。
我有完全相同的代碼在另一個刪除窗體,它工作正常。我從字面上複製了另一個表單來創建這個表單,然後改變了SQL /變量名稱。
PHP代碼:
#delete vendor
require('includes/mysqli_connect.php');
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
$errors = array(); //array to collect errors
//check to ensure fields are filled out
if (!empty($_POST['vendor'])) {
$vendor = trim($_POST['vendor']);
}
else {
$errors[] = "<p>You forgot to select a vendor to delete</p>";
}
if (empty($errors)) {
//insert information into appt table
$query = "UPDATE vendors_t SET active = 0 WHERE vendorID = $vendor;";
$result = mysqli_query($dbc, $query);
if($result){
echo '<div class="alert alert-success" role="alert">';
echo '<h2>Thank you!</h2>';
echo '<p> Your request to delete vendorID ' . $customerID . 'has been completed </p></div>';
} else {
echo "Error updating record: " . mysqli_error($dbc);
}
} else{
echo '<div class="alert alert-danger" role="alert"><br>';
echo '<h2>Errors Detected</h2>';
echo '<p>The following errors occured:<br/>';
foreach ($errors as $msg) {
echo "$msg<br/>\n";
}
echo '</p><p>Please try again. </p></div>';
}
}
HTML代碼
<div class="container standout" >
<div class="col-lg-12">
<h2>Delete a vendor</h2>
<p> Please select a vendor to delete.</p>
</div>
<div class="row">
<form action="index.php?pagelet=deletevendor" method="post">
<div class="form-group col-md-4">
<label for="vendor">Vendors</label>
<select name="vendor" class="form-control">
<option name="vendor" selected disabled>Choose here</option>
<?php
$query = "SELECT vendorID, contactFname, contactLname, businessName FROM vendors_T WHERE active = 1;";
$result = mysqli_query($dbc, $query);
while($row = mysqli_fetch_array($result, MYSQLI_ASSOC)) {
echo '<option name="vendor" value="'.$row['vendorID'].'">'
.$row['vendorID'].' '.$row['businessName']
.' '.$row['contactFname'].' '.$row['contactLname']
.'</option>';
}?>
</select>
<br>
<br>
<input class="btn btn-primary" id="submit" type="submit" value="Delete">
</div>
</div>
</form>
</div>
我們可以看到表單的標記,我高度懷疑你沒有名爲「供應商」的字段。 – mayersdesign
從<選項名稱=「供應商」選擇禁用**選擇**從這裏選擇 –
從選項(<選項名稱=「供應商」)刪除名稱='供應商',並添加值屬性,而不是刪除選中。 –