我在管理面板上有多個字段用戶可以添加字段並刪除字段,同時添加它我把簡單的插入查詢與foreach循環,但很難理解更新該字段的概念,如果用戶刪除字段或更新它不工作,如果我刪除1個字段並更新它刪除2個或更多然後2個字段,當我嘗試更新它不更新和更新問題是因爲我會犯一些錯誤的查詢。但主要的是關於我無法正確構建它的邏輯需要幫助。更新多個字段
更新查詢
$video_link = $_POST['video_link'];
$old_links = count($video_link);
if(isset($_POST['video_id'])) {
$video_id = $_POST['video_id'];
$total_id = count($video_id);
} else {
$video_id = '';
}
$video_links = mysqli_query($connect, "SELECT * FROM video_slides WHERE model_id = '$model_id'");
$total_links = mysqli_num_rows($video_links);
$video_link = sizeof($video_link) - 1;
if($total_links >= 1) {
for($i = 0; $i<=$video_link; $i++) {
if(empty($video_id[$i])) {
mysqli_query($connect, "INSERT INTO `video_slides`(`embeded_link``, `model_id`) VALUES ('$video_link[$i]', '$model_id')");
}
$query2 = mysqli_query($connect, "UPDATE `video_slides` SET `embeded_link`='$video_link[$i]' WHERE id='$video_id[$i]'");
if($video_link < $total_links) {
$new_total = $total_links-sizeof($video_link);
for($j = 0; $j<=$new_total; $j++) {
mysqli_query($connect, "DELETE FROM video_slides WHERE id='$video_id[$j]'");
}
}
}
} else {
for($i = 0; $i<=$video_link; $i++) {
if(empty($video_id[$i])) {
mysqli_query($connect, "INSERT INTO `video_slides`(`embeded_link``, `model_id`) VALUES ('$video_link[$i]', '$model_id')");
}
}
}
這裏是我的表單字段
<div class="form-group">
<label>Video Slides <input type="button" class="add_field_button btn blue" value="Add Field" /></label>
<div class="input_fields_wrap">
<?php
$sql3 = mysqli_query($connection, "SELECT * FROM video_slides WHERE model_id = '".$data['id']."'");
if(mysqli_num_rows($sql3) == 0) {
?>
<div class="new">
<input type="text" id="video_link" size="20" name="video_link[]" placeholder="Embeded Video Link" class="form-control" />
</div>
<?php
} else {
while($video = mysqli_fetch_assoc($sql3)) {
?>
<div class="new">
<input type="text" id="video_link" size="20" name="video_link[]" placeholder="Embeded Video Link" class="form-control" value="<?php echo $video['embeded_link']; ?>" />
<input type="hidden" value="<?php echo $video['id']; ?>" name="video_id[]" />
<a class="remove_field"><i class="fa fa-times"></i></a>
</div>
<?php } } ?>
</div>
</div>
我認爲你做錯了邏輯 –
是我不知道,雖然,但我仍然感到困惑,你可以幫我? –
請檢查回答 –