netwatch/app/modules/buildings/edit.php

<?php
/**
 * app/modules/buildings/edit.php
 */

// =========================
// Kontext bestimmen
// =========================
$buildingId = (int)($_GET['id'] ?? 0);
$building = null;

if ($buildingId > 0) {
    $building = $sql->single(
        "SELECT * FROM buildings WHERE id = ?",
        "i",
        [$buildingId]
    );
}

$isEdit = !empty($building);
$pageTitle = $isEdit ? "Gebäude bearbeiten: " . htmlspecialchars($building['name']) : "Neues Gebäude";
$prefillLocationId = (int)($_GET['location_id'] ?? 0);

// =========================
// Standorte laden
// =========================
$locations = $sql->get("SELECT id, name FROM locations ORDER BY name", "", []);
$selectedLocationId = $building['location_id'] ?? $prefillLocationId;

?>

<div class="building-edit">
    <h1><?php echo $pageTitle; ?></h1>

    <form method="post" action="?module=buildings&action=save" class="edit-form">

        <?php if ($isEdit): ?>
        <input type="hidden" name="id" value="<?php echo $buildingId; ?>">
        <?php endif; ?>

        <!-- =========================
             Basisdaten
             ========================= -->
        <fieldset>
            <legend>Allgemein</legend>

            <div class="form-group">
                <label for="name">Name <span class="required">*</span></label>
                <input type="text" id="name" name="name" required
                    value="<?php echo htmlspecialchars($building['name'] ?? '); ?>"
                    placeholder="z.B. Gebäude A, Verwaltungsgebäude">
            </div>

            <div class="form-group">
                <label for="location_id">Standort <span class="required">*</span></label>
                <select id="location_id" name="location_id" required>
                    <option value="">- Wählen -</option>
                    <?php foreach ($locations as $location): ?>
                    <option value="<?php echo $location['id']; ?>"
                        <?php echo ((int)$selectedLocationId === (int)$location['id']) ? 'selected' : '; ?>>
                        <?php echo htmlspecialchars($location['name']); ?>
                    </option>
                    <?php endforeach; ?>
                </select>
            </div>

            <div class="form-group">
                <label for="comment">Beschreibung</label>
                <textarea id="comment" name="comment" rows="3"
                    placeholder="Adresse, Besonderheiten, etc."><?php echo htmlspecialchars($building['comment'] ?? '); ?></textarea>
            </div>
        </fieldset>

        <!-- =========================
             Aktionen
             ========================= -->
        <fieldset class="form-actions">
            <button type="submit" class="button button-primary">Speichern</button>
            <a href="?module=buildings&action=list" class="button">Abbrechen</a>
            <?php if ($isEdit): ?>
                <a href="#" class="button button-danger" onclick="confirmDelete(<?php echo $buildingId; ?>)">Löschen</a>
            <?php endif; ?>
        </fieldset>

    </form>
</div>

<style>
.building-edit {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
}

.edit-form {
    background: white;
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 8px;
}

.edit-form fieldset {
    margin: 20px 0;
    padding: 15px;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
}

.edit-form legend {
    padding: 0 10px;
    font-weight: bold;
    font-size: 1.1em;
}

.form-group {
    margin: 15px 0;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.form-group input[type="text"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: inherit;
}

.form-group textarea {
    resize: vertical;
}

.required {
    color: red;
}

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 30px;
}

.button {
    padding: 10px 15px;
    background: #007bff;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    font-size: 0.95em;
}

.button-primary {
    background: #28a745;
}

.button-danger {
    background: #dc3545;
}

.button:hover {
    opacity: 0.8;
}
</style>

<script>
function confirmDelete(id) {
    if (confirm('Dieses Gebaeude wirklich loeschen? Alle Stockwerke werden geloescht.')) {
        fetch('?module=buildings&action=delete', {
            method: 'POST',
            headers: { 'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8' },
            body: 'id=' + encodeURIComponent(id)
        })
            .then((res) => res.json())
            .then((data) => {
                if (data && data.status === 'ok') {
                    window.location.href = '?module=buildings&action=list';
                    return;
                }
                alert((data && data.error) ? data.error : 'Loeschen fehlgeschlagen');
            })
            .catch(() => {
                alert('Loeschen fehlgeschlagen');
            });
    }
}
</script>