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master^2
Jasmin Weise 2023-06-14 21:29:16 +02:00
parent c28d830a8c
commit 71a0def498
1 changed files with 75 additions and 6 deletions
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81
loeschen_erfolgreich_meine_buecher.php
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@ -50,8 +50,9 @@
</header> </header>
<?php <?php
$ID = $_GET['ausleihID'];
$BookID = $_GET['buchID']; $BookID = $_GET['buchID'];
$servername = "localhost"; $servername = "localhost";
$username = "web_b-3"; $username = "web_b-3";
$password = "een7Ao6s"; $password = "een7Ao6s";
@ -63,11 +64,79 @@ $connection =
if (!$connection) { if (!$connection) {
die("Verbindung fehlgeschlagen: " . mysqli_connect_error()); die("Verbindung fehlgeschlagen: " . mysqli_connect_error());
} }
$sql = $connection->prepare("
DELETE FROM `ausgeliehenes_buch` WHERE `ausgeliehenes_buch`.`AusleihID` = ?; $sqlDelete = $connection->prepare("
UPDATE `buch` SET `Anzahl` = Anzahl+1 WHERE `buch`.`BuchID` = ? ; DELETE FROM `ausgeliehenes_buch` WHERE `ausgeliehenes_buch`.`AusleihID` = ?;");
"); $sqlDelete->bind_param("i", $ID);
$sql->bind_param("ii", $ID, $BookID); $ID = $_GET['ausleihID'];
// SQL-Befehl ausführen
$sqlDelete->execute();
$sqlGetQuantity = $connection->prepare(
"SELECT Anzahl, MaxAnzahl FROM `buch` WHERE BuchID = ?;");
$sqlGetQuantity->bind_param("i", $BookID);
$sqlGetQuantity->execute();
// Ergebnis speichern
$resultGetQuantity = $sqlGetQuantity->get_result();
if (mysqli_num_rows($resultGetQuantity) > 0) {
while($rowGetQuantity = mysqli_fetch_assoc($resultGetQuantity)) {
$bookQuantity = $rowGetQuantity['Anzahl'];
$bookMaxQuantity = $rowGetQuantity['MaxAnzahl'];
$bookTempQuantity = $bookQuantity + 1;
$bookTempQuantityNew = $bookMaxQuantity - $bookTempQuantity;
$sqlGetBorrowedQuantity = $connection->prepare(
"SELECT COUNT(*) AS Ausgeliehen
FROM `ausgeliehenes_buch` WHERE BuchID = ?;"
);
$sqlGetBorrowedQuantity->bind_param("i", $BookID);
$sqlGetBorrowedQuantity->execute();
// Ergebnis speichern
$resultGetBorrowedQuantity = $sqlGetBorrowedQuantity->get_result();
if (mysqli_num_rows($resultGetBorrowedQuantity) > 0) {
while($rowGetBorrowedQuantity = mysqli_fetch_assoc($resultGetBorrowedQuantity)) {
$bookBorrowedQuantity = $rowGetBorrowedQuantity['Ausgeliehen'];
if ($bookBorrowedQuantity == $bookTempQuantityNew) {
$sqlUpdateBook = $connection->prepare(
"UPDATE buch SET Anzahl = Anzahl+1
WHERE buch.BuchID = ? ;"
);
$sqlUpdateBook->bind_param("i", $BookID);
$sqlUpdateBook->execute();
}
else {
$sqlGetBorrowedID = $connection->prepare(
"SELECT AusleihID
FROM `ausgeliehenes_buch`
WHERE BuchID = ?
AND Reserviert=1
ORDER BY Enddatum
DESC LIMIT 1;"
);
$sqlGetBorrowedID->bind_param("i", $BookID);
$sqlGetBorrowedID->execute();
// Ergebnis speichern
$resultGetBorrowedID = $sqlGetBorrowedID->get_result();
if (mysqli_num_rows($resultGetBorrowedID) > 0) {
while($rowGetBorrowedID = mysqli_fetch_assoc($resultGetBorrowedID)) {
$bookBorrowedID = $rowGetBorrowedID['AusleihID'];
$sqlUpdateBookID = $connection->prepare(
"UPDATE `ausgeliehenes_buch`
SET `Verlängerbar` = '1',
`Reserviert` = '0'
WHERE `ausgeliehenes_buch`.`AusleihID` = ?;"
);
$sqlUpdateBookID->bind_param("i", $bookBorrowedID);
$sqlUpdateBookID->execute();
}
}
}
}
}
}
}
?> ?>