将变量传递给 modal as <span>，然后需要在 SQL 查询中使用解析的变量</span>

Question

am grateful for any and all help here please.

I'm passing a data-id value to a bootstrap modal form. The data-id is generated from a while loop. Here is the line from within the loop...

echo "<div class='col-2'><a href='' data-toggle='modal' data-target='#modaleditprice' class='btn btn-primary btn-sm' data-id='".$bids['PriceID']."'><i class='far fa-edit'></i></a></div>";

Then I have some jquery which sends the data to the modal form...

$('#modaleditprice').on('show.bs.modal', function (e) {
var SentPriceID = $(e.relatedTarget).attr('data-id');
$(this).find('.ModalPriceID').text(SentPriceID);
});

Finally, here is the php and html code within the modal form itself...

$PriceID = "<span class='ModalPriceID'></span>";
$priceSQL = "SELECT * FROM prices WHERE PriceID = ".$PriceID;
$priceQRY = $conn->query($priceSQL);

...

<div class="modal-header">
<h4 class="modal-title">Edit Price - <?php echo $PriceID; ?></h4>
<button type="button" class="close" data-dismiss="modal" aria label="Close">
<span aria-hidden="true">×</span>
</button>
</div>

 <div class="modal-body">
 <form method="POST" action="editprice.php">
 etc... 

The form is populated with the values retrieved from the SQL query. The form works fine if I can get the SQL query to work... The issue is that I cannot parse the query above successfully within the php segment. The html segment renders the correct value of $PriceID ie it first renders as the span code, which then shows the correct price ID value once the html is completed loading. But I need to use this as a resolved variable beforehand. Any ideas?

edited: I'm using two php files which may be the problem here ie I include the modal file based on a condition in my main file...

if (isset($_SESSION['UserRole']) && ($_SESSION['UserRole'] == 'Trader' || $_SESSION['UserRole'] == 'Viewer'))   {
// Proceed if Viewer or Trader else boot out
include_once '../../'.$config["paths"]["secured"].'pricemodals.php';

Answer 1

It looks like your sql statement will resolve to the following

SELECT * FROM prices WHERE PriceID = <span class='ModalPriceID'></span>;

since you are string to $PriceID and not a reference. It also looks like you are attempting to do actions on the page within the php after the page is rendered. You will need to either create a small form within the modal that sends the values as form data eg $_POST/$_GET where the page will essentially refresh and process those items on the top of the page if they exist, https://www.w3schools.com/php/php_forms.asp

or better yet use AJAX to send the query asynchronously and react to the response without a page load. https://www.w3schools.com/jquery/jquery_ref_ajax.asp