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modules/fx-rates/assets/fx-rates-currencies.js

@@ -12,6 +12,7 @@
       .filter(Boolean)
   );
   let displayBase = String(page.display_base_currency || '').trim().toUpperCase();
+  const savedDisplayBase = String(page.saved_display_base_currency || displayBase || '').trim().toUpperCase();
 
   const nodes = {
     tokenList: root.querySelector('[data-fx-token-list]'),
@@ -152,6 +153,15 @@
   nodes.displayBaseSelect?.addEventListener('change', () => {
     displayBase = String(nodes.displayBaseSelect?.value || '').trim().toUpperCase();
     renderHiddenInputs();
+    const url = new URL(window.location.href);
+    if (displayBase) {
+      url.searchParams.set('base', displayBase);
+    } else if (savedDisplayBase) {
+      url.searchParams.set('base', savedDisplayBase);
+    } else {
+      url.searchParams.delete('base');
+    }
+    window.location.href = url.toString();
   });
 
   renderAll();

modules/fx-rates/pages/currencies.php

@@ -52,7 +52,8 @@ if (strtoupper((string) ($_SERVER['REQUEST_METHOD'] ?? 'GET')) === 'POST') {
 
 $catalog = is_array($settings['currency_catalog'] ?? null) ? $settings['currency_catalog'] : [];
 $preferredCurrencies = is_array($settings['preferred_currencies'] ?? null) ? $settings['preferred_currencies'] : [];
-$displayBaseCurrency = strtoupper(trim((string) ($settings['display_base_currency'] ?? $settings['default_base_currency'] ?? 'EUR')));
+$savedDisplayBaseCurrency = strtoupper(trim((string) ($settings['display_base_currency'] ?? $settings['default_base_currency'] ?? 'EUR')));
+$requestedDisplayBaseCurrency = strtoupper(trim((string) ($_GET['base'] ?? '')));
 $latest = $service->latestStatus();
 $recentFetches = $service->recentFetches(15);
 
@@ -86,10 +87,29 @@ foreach ($currencies as $currency) {
     }
 }
 
+$catalogCodes = [];
+foreach ($currencies as $currency) {
+    $catalogCodes[(string) $currency['code']] = true;
+}
+
+$displayBaseCurrency = $requestedDisplayBaseCurrency !== '' ? $requestedDisplayBaseCurrency : $savedDisplayBaseCurrency;
+if ($displayBaseCurrency === '' || (!isset($catalogCodes[$displayBaseCurrency]) && $preferredCurrencies !== [])) {
+    $displayBaseCurrency = $savedDisplayBaseCurrency !== '' ? $savedDisplayBaseCurrency : (string) ($preferredCurrencies[0] ?? 'EUR');
+}
+
+$tableCurrencies = [];
+foreach ([$displayBaseCurrency, ...$preferredCurrencies] as $currency) {
+    $currency = strtoupper(trim((string) $currency));
+    if ($currency !== '' && !in_array($currency, $tableCurrencies, true)) {
+        $tableCurrencies[] = $currency;
+    }
+}
+
 $currencyPageData = json_encode([
     'currencies' => $currencies,
     'preferred_currencies' => array_values(array_unique(array_map(static fn (mixed $code): string => strtoupper(trim((string) $code)), $preferredCurrencies))),
     'display_base_currency' => $displayBaseCurrency,
+    'saved_display_base_currency' => $savedDisplayBaseCurrency,
 ], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
 
 $tabs = [
@@ -177,7 +197,7 @@ $tabs = [
               <th>Zeit</th>
               <th>Stichtag</th>
               <th>Fetch-Basis</th>
-              <?php foreach ($preferredCurrencies as $currency): ?>
+              <?php foreach ($tableCurrencies as $currency): ?>
                 <th><?= e((string) $currency) ?></th>
               <?php endforeach; ?>
               <th>Provider</th>
@@ -185,18 +205,18 @@ $tabs = [
           </thead>
           <tbody>
             <?php if ($recentFetches === []): ?>
-              <tr><td colspan="<?= 4 + count($preferredCurrencies) ?>">Noch keine Abrufe vorhanden.</td></tr>
+              <tr><td colspan="<?= 4 + count($tableCurrencies) ?>">Noch keine Abrufe vorhanden.</td></tr>
             <?php else: ?>
               <?php foreach ($recentFetches as $fetch): ?>
                 <?php
-                  $snapshot = $service->snapshotByFetchId((int) ($fetch['id'] ?? 0), $displayBaseCurrency, $preferredCurrencies);
+                  $snapshot = $service->snapshotByFetchId((int) ($fetch['id'] ?? 0), $displayBaseCurrency, $tableCurrencies);
                   $rates = is_array($snapshot['rates'] ?? null) ? $snapshot['rates'] : [];
                 ?>
                 <tr>
                   <td><?= e((string) ($fetch['fetched_at_display'] ?? $fetch['fetched_at'] ?? '')) ?></td>
                   <td><?= e((string) ($fetch['rate_date'] ?? '')) ?></td>
                   <td><?= e((string) ($fetch['base_currency'] ?? '')) ?></td>
-                  <?php foreach ($preferredCurrencies as $currency): ?>
+                  <?php foreach ($tableCurrencies as $currency): ?>
                     <?php $value = $rates[(string) $currency] ?? null; ?>
                     <td><?= is_numeric($value) ? e(number_format((float) $value, 8, ',', '')) : '–' ?></td>
                   <?php endforeach; ?>