我有 2 个 mySQL 表:
A)`inventory` (`id`, `item`, `qty_left`, `qty_min`, `qty_max`, `cat_no`, `supplier`) VALUES
(1, 'Orange', 8, 10, 50, 1001, 'ACOMP'),
(2, 'Apple', 4, 10, 20, 1002, 'BCOMP'),
(3, 'Pear', 80, 20, 100, 1003, 'ACOMP'),
(4, 'Durian', 9, 60, 100, 1004, 'CCOMP');
B)`reorder_in_process` (`id`, `item`, `to_order`, `cat_no`, `supplier`, `time`) VALUES
(EMPTY);
我有 PHP 页面:(purchaser.php)
<!---------------Ajax Script To Confirm Purchase From Clicked Supplier------------>
<script>
function tCat(value) {
xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
document.getElementById("reorder_in_process").innerHTML = xmlhttp.responseText;
}
}
xmlhttp.open("GET","purchaser_confirm_purchase.php?q="+value,true);
xmlhttp.send();
}
</script>
<style>
#left_col {
float: left;
width: 33%;}
#mid_col {
float: right;
width: 33%;}
#reorder_in_process {
float: none;
width: 100%;}
#supplier {
float: none;}
</style>
<div id="left_Col">
<div>Items Need Reorder</div>
<?PHP
include ('db.php');
$result = mysqli_query($con, "SELECT * FROM inventory WHERE qty_left<=qty_min ORDER BY supplier ASC, item ASC");
$first_iteration = true;
$current_supplier = null;
while($row = mysqli_fetch_assoc($result)){
$to_order = $row['qty_max']-$row['qty_left'];
// If a new supplier is encountered, close the first table (if its no the first iteration) and add new header + start new table
if ($row['supplier'] != $current_supplier) {
if ($first_iteration == false)
echo "</table></div>";
$i = 1;
$first_iteration = false;
$current_supplier = $row['supplier'];
echo "<h4>".$row['supplier']."<button id='supplier' value=". $row['supplier']." onClick='tCat(value)'>Reorder Now</button></h4>";
echo "<div><table><tr>
<th>No</th>
<th>Item</th>
<th>Cat. No</th>
<th>Buy QTY</th>
<th>Supplier</th>
</tr>";
}
echo "<tr>
<td>".$i. "</td>
<td>".$row['item']."</td>
<td>".$row['cat_no']."</td>
<td>".$to_order."</td>
<td>".$row['supplier']."</td>
</tr>";
$i++;
}
echo "</table></div>";
?>
<div id="try"></div>
</div>
<div id="mid_col">
<div>Reorder In Process</div>
<div id="reorder_in_process">
<?PHP
include ('db.php');
$result = mysqli_query($con, "SELECT * FROM reorder_in_process ORDER BY supplier");
$first_iteration = true;
$current_supplier = null;
while($row = mysqli_fetch_assoc($result)){
// If a new supplier is encountered, close the first table (if its no the first iteration) and add new header + start new table
if ($row['supplier'] != $current_supplier) {
if ($first_iteration == false)
echo "</table></div>";
$i = 1;
$first_iteration = false;
$current_supplier = $row['supplier'];
echo "<h4>".$row['supplier']."</h4>";
echo "<div><table><tr>
<th>No</th>
<th>Item</th>
<th>Cat. No</th>
<th>Buy QTY</th>
<th>Supplier</th>
<th>Ordered Time</th>
</tr>";
}
echo "<tr>
<td>".$i. "</td>
<td>".$row['item']."</td>
<td>".$row['cat_no']."</td>
<td>".$row['to_order']."</td>
<td>".$row['supplier']."</td>
<td>".$row['time']."</td>
</tr>";
$i++;
}
echo "</table></div>";
?>
</div>
</div>然后我有另一个页面:(purchaser_confirm_purchase.php)
<?php
include ('db.php');
$q = strval($_GET['q']);
$sql2 = "SELECT * FROM inventory WHERE qty_left<=qty_min AND supplier='$q'";
$result2 = mysqli_query($con,$sql2);
while($row2 = mysqli_fetch_array($result2)) {
$item = $row2['item'];
$cat_no = $row2['cat_no'];
$qty_max = $row2['qty_max'];
$qty_left = $row2['qty_left'];
$to_order = $row2['qty_max']-$row2['qty_left'];
$qql = "INSERT INTO reorder_in_process VALUES (NULL, '$item', '$to_order', '$cat_no', '$q', now())";
$result_qql = mysqli_query($con,$qql);
}
//-----------------Update reorder_in_process to the PHP page if any new insert.--------------------//
$result = mysqli_query($con, "SELECT * FROM reorder_in_process ORDER BY supplier");
$first_iteration = true;
$current_supplier = null;
while($row = mysqli_fetch_assoc($result)){
// If a new supplier is encountered, close the first table (if its no the first iteration) and add new header + start new table
if ($row['supplier'] != $current_supplier) {
if ($first_iteration == false)
echo "</table></div>";
$i = 1;
$first_iteration = false;
$current_supplier = $row['supplier'];
echo "<h4>".$row['supplier']."</h4>";
echo "<div><table><tr>
<th>No</th>
<th>Item</th>
<th>Cat. No</th>
<th>Buy QTY</th>
<th>Supplier</th>
<th>Ordered Time</th>
</tr>";
}
echo "<tr>
<td>".$i. "</td>
<td>".$row['item']."</td>
<td>".$row['cat_no']."</td>
<td>".$row['to_order']."</td>
<td>".$row['supplier']."</td>
<td>".$row['time']."</td>
</tr>";
$i++;
}
echo "</table></div>";
?>(purchaser.php)页面将输出以下结果:
Items Need Reorder Reorder In Process
ACOMP <Button"Reorder Now">
No Item Cat. No Buy QTY Supplier
1 Orange 1001 42 ACOMP
BCOMP <Button"Reorder Now">
No Item Cat. No Buy QTY Supplier
1 Apple 1002 16 BCOMP
CCOMP <Button"Reorder Now">
No Item Cat. No Buy QTY Supplier
1 Durian 1004 91 CCOMP
现在，如果我单击“重新排序按钮”，它会输出:
Items Need Reorder Reorder In Process
ACOMP <Button"Reorder Now"> ACOMP
No Item Cat. No Buy QTY Supplier No Item Cat. No Buy QTY Supplier Ordered Time
1 Orange 1001 42 ACOMP 1 Orange 1001 42 ACOMP 2017-06-09 23:06:42
BCOMP <Button"Reorder Now">
No Item Cat. No Buy QTY Supplier
1 Apple 1002 16 BCOMP
CCOMP <Button"Reorder Now">
No Item Cat. No Buy QTY Supplier
1 Durian 1004 91 CCOMP
但是我想要的是点击后的结果:
Items Need Reorder Reorder In Process
BCOMP <Button"Reorder Now"> ACOMP
No Item Cat. No Buy QTY Supplier No Item Cat. No Buy QTY Supplier Ordered Time
1 Apple 1002 16 BCOMP 1 Orange 1001 42 ACOMP 2017-06-09 23:06:42
CCOMP <Button"Reorder Now">
No Item Cat. No Buy QTY Supplier
1 Durian 1004 91 CCOMP
即使在页面重新加载/刷新后，它仍然保持不变。
请帮忙。谢谢。
最佳答案
在 UI 中加载第一个表格:
Select * from table1 t1 left join table2 t2 on t1.id=t2.id
where t2.id is null
即使刷新后，它也会在两个表中保留正确的值。
如果 table2 填充了页面加载，则无需担心渲染/隐藏。
但是，如果您通过 AJAX 执行此操作，正如您所说，您可以通过与其他行不同的 rowid 或 class 删除 DOM 元素。最终必须使用第二个表中的 DOM 元素创建相同的值。
关于PHP SELECT INSERT数据(x)从表A到B，然后防止数据(x)出现在SELECT表A上，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/44458385/