feat(map): allow backend-selected organization tags

contao/dca/tl_module.php

@@ -9,7 +9,7 @@ use Contao\StringUtil;
 $GLOBALS['TL_DCA']['tl_module']['palettes']['member_organizations'] = '{title_legend},name,headline,type;{eventmanager_legend},editPage;{protected_legend:hide},protected;{expert_legend:hide},guests,cssID';
 $GLOBALS['TL_DCA']['tl_module']['palettes']['member_events'] = '{title_legend},name,headline,type;{eventmanager_legend},editPage;{protected_legend:hide},protected;{expert_legend:hide},guests,cssID';
 $GLOBALS['TL_DCA']['tl_module']['palettes']['event_filter'] = '{title_legend},name,headline,type;{eventmanager_legend},cal_calendar,eventListDomId;{protected_legend:hide},protected;{expert_legend:hide},guests,cssID';
-$GLOBALS['TL_DCA']['tl_module']['palettes']['eventmanager_map'] = '{title_legend},name,headline,type;{eventmanager_legend},mapShowOrganizations,mapShowExternalOrganizations,mapShowEvents,mapEventColor,mapOrganizationColorScheme,mapCenterMode;{protected_legend:hide},protected;{expert_legend:hide},guests,cssID';
+$GLOBALS['TL_DCA']['tl_module']['palettes']['eventmanager_map'] = '{title_legend},name,headline,type;{eventmanager_legend},mapShowOrganizations,organizationTypeTags,mapShowExternalOrganizations,mapShowEvents,mapEventColor,mapOrganizationColor,mapCenterMode;{protected_legend:hide},protected;{expert_legend:hide},guests,cssID';
 $GLOBALS['TL_DCA']['tl_module']['palettes']['organization_edit'] = '{title_legend},name,headline,type;{eventmanager_legend},listPage,logoFolder,organizationTypeTags;{protected_legend:hide},protected;{expert_legend:hide},guests,cssID';
 $GLOBALS['TL_DCA']['tl_module']['palettes']['event_edit'] = '{title_legend},name,headline,type;{eventmanager_legend},listPage,eventFolder,termsPage,frontendAuthorId,frontendArchiveId,eventTypeTags;{protected_legend:hide},protected;{expert_legend:hide},guests,cssID';
 
@@ -195,12 +195,12 @@ $GLOBALS['TL_DCA']['tl_module']['fields']['mapEventColor'] = [
     'sql' => ['type' => 'string', 'length' => 7, 'default' => '#BC5067'],
 ];
 
-$GLOBALS['TL_DCA']['tl_module']['fields']['mapOrganizationColorScheme'] = [
+$GLOBALS['TL_DCA']['tl_module']['fields']['mapOrganizationColor'] = [
-    'label' => &$GLOBALS['TL_LANG']['tl_module']['mapOrganizationColorScheme'],
+    'label' => &$GLOBALS['TL_LANG']['tl_module']['mapOrganizationColor'],
     'exclude' => true,
     'inputType' => 'text',
-    'eval' => ['maxlength' => 1024, 'tl_class' => 'clr long'],
+    'eval' => ['maxlength' => 7, 'rgxp' => 'hexcolor', 'colorpicker' => true, 'tl_class' => 'w50'],
-    'sql' => ['type' => 'string', 'length' => 1024, 'default' => ''],
+    'sql' => ['type' => 'string', 'length' => 7, 'default' => '#BC5067'],
 ];
 
 $GLOBALS['TL_DCA']['tl_module']['fields']['mapCenterMode'] = [

contao/languages/de/tl_module.php

@@ -17,7 +17,7 @@ $GLOBALS['TL_LANG']['tl_module']['mapShowOrganizations'] = ['Organisationen anze
 $GLOBALS['TL_LANG']['tl_module']['mapShowExternalOrganizations'] = ['Externe Organisationen anzeigen', 'Wenn aktiviert, werden externe Organisationen (isExternal=1) zusätzlich auf der Karte dargestellt. Standard: nein.'];
 $GLOBALS['TL_LANG']['tl_module']['mapShowEvents'] = ['Veranstaltungen anzeigen', 'Wenn aktiviert, werden Event- (inkl. Orts-) Marker auf der Karte dargestellt.'];
 $GLOBALS['TL_LANG']['tl_module']['mapEventColor'] = ['Event-Farbe (Kreise/Linien)', 'Farbe für Event-Cluster, Event-Punkte und Spiderfy-Verbindungslinien (Hex, z. B. #BC5067).'];
-$GLOBALS['TL_LANG']['tl_module']['mapOrganizationColorScheme'] = ['Farbschema (Organisationstypen)', 'Kommagetrennte Farben für Organisationstypen/Tags, z. B. ff6600,77dd33,ff99bb. Markerfarbe richtet sich nach dem ersten Tag.'];
+$GLOBALS['TL_LANG']['tl_module']['mapOrganizationColor'] = ['Organisationsfarbe', 'Einheitliche Farbe für alle Organisations-Marker (Hex, z. B. #BC5067).'];
 $GLOBALS['TL_LANG']['tl_module']['mapCenterMode'] = ['Karten-Zentrierung', 'Wählen Sie, ob die Karte anhand der Marker oder mit festen Koordinaten zentriert werden soll.'];
 $GLOBALS['TL_LANG']['tl_module']['mapCenterMode_options'] = [
 	'markers' => 'Anhand der Marker (alle Marker sichtbar)',

contao/languages/en/tl_module.php

@@ -17,7 +17,7 @@ $GLOBALS['TL_LANG']['tl_module']['mapShowOrganizations'] = ['Show organizations'
 $GLOBALS['TL_LANG']['tl_module']['mapShowExternalOrganizations'] = ['Show external organizations', 'If enabled, external organizations (isExternal=1) are additionally rendered on the map. Default: no.'];
 $GLOBALS['TL_LANG']['tl_module']['mapShowEvents'] = ['Show events', 'If enabled, event markers (including related locations) are rendered on the map.'];
 $GLOBALS['TL_LANG']['tl_module']['mapEventColor'] = ['Event color (circles/lines)', 'Color for event clusters, event points and spiderfy connector lines (hex, e.g. #BC5067).'];
-$GLOBALS['TL_LANG']['tl_module']['mapOrganizationColorScheme'] = ['Color scheme (organization types)', 'Comma-separated colors for organization type tags, e.g. ff6600,77dd33,ff99bb. Marker color follows the first tag.'];
+$GLOBALS['TL_LANG']['tl_module']['mapOrganizationColor'] = ['Organization color', 'Unified color for all organization markers (hex, e.g. #BC5067).'];
 $GLOBALS['TL_LANG']['tl_module']['mapCenterMode'] = ['Map centering', 'Choose whether the map should center by markers or fixed coordinates.'];
 $GLOBALS['TL_LANG']['tl_module']['mapCenterMode_options'] = [
 	'markers' => 'By markers (fit all visible markers)',

contao/templates/frontend/event_map.html.twig

@@ -9,12 +9,13 @@
 >
     <button
         type="button"
-        class="eventmanager-map-filter__toggle"
+        class="eventmanager-map-filter__toggle is-expanded"
         data-map-filter-toggle="1"
         aria-expanded="true"
         aria-controls="{{ mapFilterGroupId|e('html_attr') }}"
     >
-        Bereiche ausblenden
+        <span class="eventmanager-map-filter__toggle-label eventmanager-map-filter__toggle-label--expand">Filter einblenden</span>
+        <span class="eventmanager-map-filter__toggle-label eventmanager-map-filter__toggle-label--collapse">Filter ausblenden</span>
     </button>
 
     <div
@@ -23,29 +24,43 @@
         role="group"
         aria-label="Organisationstypen"
     >
+        <button
+            type="button"
+            class="eventmanager-map-filter__tag is-active"
+            data-map-filter-action="all"
+            aria-pressed="true"
+        >Alle</button>
+
         {% if tags is iterable and tags|length > 0 %}
             {% for tag in tags %}
                 <button
                     type="button"
-                    class="eventmanager-map-filter__tag is-active"
+                    class="eventmanager-map-filter__tag"
                     data-map-tag-filter="{{ tag.id|e('html_attr') }}"
-                    aria-pressed="true"
+                    aria-pressed="false"
                 >{{ tag.label|e }}</button>
             {% endfor %}
         {% endif %}
         <button
             type="button"
-            class="eventmanager-map-filter__tag is-active"
+            class="eventmanager-map-filter__tag"
             data-map-event-toggle="1"
-            aria-pressed="true"
+            aria-pressed="false"
         >Veranstaltungen</button>
-    </div>
 
-    <div class="eventmanager-map-filter__actions">
+        <button
-        <button type="button" data-map-filter-action="all">Alle auswählen</button>
+            type="button"
-        <button type="button" data-map-filter-action="none">Alle abwählen</button>
+            class="eventmanager-map-filter__tag"
-        <button type="button" data-map-style-mode="street" aria-pressed="true">Straße</button>
+            data-map-style-mode="street"
-        <button type="button" data-map-style-mode="satellite" aria-pressed="false">Satellit</button>
+            aria-pressed="true"
+        >Straße</button>
+
+        <button
+            type="button"
+            class="eventmanager-map-filter__tag"
+            data-map-style-mode="satellite"
+            aria-pressed="false"
+        >Satellit</button>
     </div>
 </section>
 
@@ -57,7 +72,7 @@
     data-map-style="{{ mapStyleUrl|e('html_attr') }}"
     data-map-data-id="{{ mapDataElementId|e('html_attr') }}"
     data-map-event-color="{{ mapEventColor|default('#BC5067')|e('html_attr') }}"
-    data-map-organization-colors="{{ mapOrganizationColorScheme|default('')|e('html_attr') }}"
+    data-map-organization-color="{{ mapOrganizationColor|default('#BC5067')|e('html_attr') }}"
     data-map-center-mode="{{ mapCenterMode|default('markers')|e('html_attr') }}"
     data-map-center-lat="{{ mapCenterLat|default('')|e('html_attr') }}"
     data-map-center-lng="{{ mapCenterLng|default('')|e('html_attr') }}"
@@ -71,8 +86,7 @@
         margin-bottom: .75rem;
     }
 
-    .eventmanager-map-filter__group,
+    .eventmanager-map-filter__group {
-    .eventmanager-map-filter__actions {
         display: flex;
         flex-wrap: wrap;
         gap: .5rem;
@@ -89,4 +103,4 @@
 </style>
 
 <script type="application/json" id="{{ mapDataElementId|e('html_attr') }}">{{ mapItemsJson|raw }}</script>
-<script type="module" src="/bundles/mummertmediaeventmanager/assets/map-module.js"></script>
+<script type="module" src="/bundles/mummertmediaeventmanager/assets/map-module.js?v=20260226"></script>

public/assets/map-module.js

@@ -199,70 +199,6 @@ const normalizeHexColor = (value, fallback = DEFAULT_EVENT_COLOR) => {
     return fallback;
 };
 
-const normalizeHexColorOrNull = (value) => {
-    const fallback = '__INVALID__';
-    const normalized = normalizeHexColor(value, fallback);
-
-    return normalized === fallback ? null : normalized;
-};
-
-const parseOrganizationColorScheme = (value) => {
-    const raw = String(value || '').trim();
-
-    if ('' === raw) {
-        return [];
-    }
-
-    return raw
-        .split(',')
-        .map((part) => normalizeHexColorOrNull(part))
-        .filter((part) => null !== part);
-};
-
-const buildOrganizationTagColorMap = (container, colors, organizationItems) => {
-    if (!colors.length) {
-        return {
-            byTagId: {},
-            fallbackColor: null,
-        };
-    }
-
-    const fallbackColor = colors[0];
-    const wrapperId = container.dataset.mapFilterWrapperId || '';
-    const wrapper = wrapperId ? document.getElementById(wrapperId) : null;
-    let orderedTagIds = [];
-
-    if (wrapper) {
-        orderedTagIds = Array.from(wrapper.querySelectorAll('[data-map-tag-filter]'))
-            .map((button) => String(button.dataset.mapTagFilter || '').trim())
-            .filter((value) => /^\d+$/.test(value));
-    }
-
-    if (!orderedTagIds.length) {
-        const seen = new Set();
-
-        organizationItems.forEach((item) => {
-            const firstTagId = String(item?.extra?.organizationTagIds?.[0] || '').trim();
-
-            if (/^\d+$/.test(firstTagId) && !seen.has(firstTagId)) {
-                seen.add(firstTagId);
-                orderedTagIds.push(firstTagId);
-            }
-        });
-    }
-
-    const byTagId = {};
-
-    orderedTagIds.forEach((tagId, index) => {
-        byTagId[tagId] = colors[index] || fallbackColor;
-    });
-
-    return {
-        byTagId,
-        fallbackColor,
-    };
-};
-
 const applyDefaultProjection = (map) => {
     if (!map || typeof map.setProjection !== 'function') {
         return;
@@ -441,21 +377,18 @@ const toFeature = (item) => ({
     },
 });
 
-const initOrganizationMarkers = (map, organizationItems, organizationTagColorMap) => {
+const initOrganizationMarkers = (map, organizationItems, organizationColor) => {
     if (!organizationItems.length) {
         return {
-            setActiveTagIds: () => {},
+            setOnlyTagId: () => {},
             setAllVisible: () => {},
+            setVisible: () => {},
         };
     }
 
     const markerEntries = organizationItems.map((item) => {
         const popupHtml = popupHtmlFor(item);
-        const primaryTagId = String(item?.extra?.organizationTagIds?.[0] || '').trim();
+        const marker = new maplibregl.Marker(organizationColor ? { color: organizationColor } : undefined)
-        const configuredColor = /^\d+$/.test(primaryTagId)
-            ? (organizationTagColorMap?.byTagId?.[primaryTagId] || organizationTagColorMap?.fallbackColor || null)
-            : null;
-        const marker = new maplibregl.Marker(configuredColor ? { color: configuredColor } : undefined)
             .setLngLat([item.longitude, item.latitude]);
 
         if (popupHtml) {
@@ -471,8 +404,9 @@ const initOrganizationMarkers = (map, organizationItems, organizationTagColorMap
     });
 
     return {
-        setActiveTagIds: (activeTagIds) => {
+        setOnlyTagId: (activeTagId) => {
-            const activeSet = new Set(normalizeTagIds(activeTagIds));
+            const normalizedTagId = String(activeTagId ?? '').trim();
+            const hasActiveTag = /^\d+$/.test(normalizedTagId);
 
             markerEntries.forEach((entry) => {
                 const markerElement = entry.marker.getElement();
@@ -482,8 +416,9 @@ const initOrganizationMarkers = (map, organizationItems, organizationTagColorMap
                 }
 
                 const hasTags = entry.tagIds.length > 0;
-                const isVisible = !hasTags
+                const isVisible = !hasActiveTag
-                    || entry.tagIds.some((tagId) => activeSet.has(tagId));
+                    || !hasTags
+                    || entry.tagIds.includes(normalizedTagId);
 
                 markerElement.style.display = isVisible ? '' : 'none';
             });
@@ -499,6 +434,17 @@ const initOrganizationMarkers = (map, organizationItems, organizationTagColorMap
                 markerElement.style.display = '';
             });
         },
+        setVisible: (isVisible) => {
+            markerEntries.forEach((entry) => {
+                const markerElement = entry.marker.getElement();
+
+                if (!markerElement) {
+                    return;
+                }
+
+                markerElement.style.display = isVisible ? '' : 'none';
+            });
+        },
     };
 };
 
@@ -517,17 +463,13 @@ const bindExternalTagFilters = (container, map, organizationMarkerManager, event
 
     const tagButtons = Array.from(wrapper.querySelectorAll('[data-map-tag-filter]'));
 
-    const collectActiveTagIds = () => tagButtons
-        .filter((button) => button.getAttribute('aria-pressed') === 'true')
-        .map((button) => String(button.dataset.mapTagFilter || '').trim())
-        .filter((value) => /^\d+$/.test(value));
-
     const setButtonState = (button, isActive) => {
         button.setAttribute('aria-pressed', isActive ? 'true' : 'false');
         button.classList.toggle('is-active', isActive);
     };
 
     const eventToggleButton = wrapper.querySelector('[data-map-event-toggle="1"]');
+    const actionAll = wrapper.querySelector('[data-map-filter-action="all"]');
 
     const setEventButtonState = (isActive) => {
         if (!eventToggleButton) {
@@ -538,48 +480,80 @@ const bindExternalTagFilters = (container, map, organizationMarkerManager, event
         eventToggleButton.classList.toggle('is-active', isActive);
     };
 
+    const setAllButtonState = (isActive) => {
+        if (!actionAll) {
+            return;
+        }
+
+        actionAll.setAttribute('aria-pressed', isActive ? 'true' : 'false');
+        actionAll.classList.toggle('is-active', isActive);
+    };
+
+    let activeTagId = null;
+    let eventsOnly = false;
+
     const applyFilter = () => {
-        if (!tagButtons.length) {
+        if (eventsOnly) {
-            organizationMarkerManager.setAllVisible();
+            organizationMarkerManager.setVisible(false);
+            setAllButtonState(false);
+
+            if (eventLayerManager) {
+                eventLayerManager.setVisible(true);
+            }
 
             return;
         }
 
-        organizationMarkerManager.setActiveTagIds(collectActiveTagIds());
+        organizationMarkerManager.setVisible(true);
+
+        if (activeTagId) {
+            organizationMarkerManager.setOnlyTagId(activeTagId);
+            setAllButtonState(false);
+
+            if (eventLayerManager) {
+                eventLayerManager.setVisible(false);
+            }
+
+            return;
+        }
+
+        organizationMarkerManager.setAllVisible();
+        setAllButtonState(true);
+
+        if (eventLayerManager) {
+            eventLayerManager.setVisible(true);
+        }
     };
 
     tagButtons.forEach((button) => {
         button.addEventListener('click', () => {
+            const clickedTagId = String(button.dataset.mapTagFilter || '').trim();
+
+            if (!/^\d+$/.test(clickedTagId)) {
+                return;
+            }
+
             const isActive = button.getAttribute('aria-pressed') === 'true';
-            setButtonState(button, !isActive);
+            activeTagId = isActive ? null : clickedTagId;
+            eventsOnly = false;
+
+            tagButtons.forEach((otherButton) => {
+                const otherTagId = String(otherButton.dataset.mapTagFilter || '').trim();
+                setButtonState(otherButton, !!activeTagId && otherTagId === activeTagId);
+            });
+
+            setEventButtonState(false);
             applyFilter();
         });
     });
 
-    const actionAll = wrapper.querySelector('[data-map-filter-action="all"]');
-    const actionNone = wrapper.querySelector('[data-map-filter-action="none"]');
-
     if (actionAll) {
         actionAll.addEventListener('click', () => {
-            tagButtons.forEach((button) => setButtonState(button, true));
+            activeTagId = null;
-            applyFilter();
+            eventsOnly = false;
-
-            if (eventLayerManager) {
-                setEventButtonState(true);
-                eventLayerManager.setVisible(true);
-            }
-        });
-    }
-
-    if (actionNone) {
-        actionNone.addEventListener('click', () => {
             tagButtons.forEach((button) => setButtonState(button, false));
-            applyFilter();
-
-            if (eventLayerManager) {
             setEventButtonState(false);
-                eventLayerManager.setVisible(false);
+            applyFilter();
-            }
         });
     }
 
@@ -593,17 +567,30 @@ const bindExternalTagFilters = (container, map, organizationMarkerManager, event
 
             toggleButton.setAttribute('aria-expanded', nextExpanded ? 'true' : 'false');
             filterGroup.hidden = !nextExpanded;
-            toggleButton.textContent = nextExpanded ? 'Bereiche ausblenden' : 'Bereiche anzeigen';
+            toggleButton.classList.toggle('is-expanded', nextExpanded);
+            toggleButton.classList.toggle('is-collapsed', !nextExpanded);
+
+            wrapper.classList.toggle('is-filter-expanded', nextExpanded);
+            wrapper.classList.toggle('is-filter-collapsed', !nextExpanded);
         });
+
+        const initiallyExpanded = toggleButton.getAttribute('aria-expanded') !== 'false';
+        filterGroup.hidden = !initiallyExpanded;
+        toggleButton.classList.toggle('is-expanded', initiallyExpanded);
+        toggleButton.classList.toggle('is-collapsed', !initiallyExpanded);
+        wrapper.classList.toggle('is-filter-expanded', initiallyExpanded);
+        wrapper.classList.toggle('is-filter-collapsed', !initiallyExpanded);
     }
 
     if (eventToggleButton && eventLayerManager) {
         eventToggleButton.addEventListener('click', () => {
             const isActive = eventToggleButton.getAttribute('aria-pressed') === 'true';
-            const nextActive = !isActive;
+            eventsOnly = !isActive;
+            activeTagId = null;
 
-            setEventButtonState(nextActive);
+            tagButtons.forEach((button) => setButtonState(button, false));
-            eventLayerManager.setVisible(nextActive);
+            setEventButtonState(eventsOnly);
+            applyFilter();
         });
     } else if (eventToggleButton) {
         eventToggleButton.disabled = true;
@@ -1137,10 +1124,12 @@ const initSingleMap = (container) => {
                 const locationItems = items.filter((item) => item.type === 'location');
                 const eventItems = items.filter((item) => item.type === 'event');
                 const allCoordinates = items.map((item) => [item.longitude, item.latitude]);
-                const organizationColors = parseOrganizationColorScheme(container.dataset.mapOrganizationColors);
+                const organizationColor = normalizeHexColor(
-                const organizationTagColorMap = buildOrganizationTagColorMap(container, organizationColors, organizationItems);
+                    container.dataset.mapOrganizationColor,
+                    eventColor,
+                );
 
-                const organizationMarkerManager = initOrganizationMarkers(map, organizationItems, organizationTagColorMap);
+                const organizationMarkerManager = initOrganizationMarkers(map, organizationItems, organizationColor);
                 const locationLayerManager = initLocationLayers(map, locationItems, eventColor);
                 let eventLayerManager = null;
 

src/Controller/Frontend/EventMapController.php

@@ -8,6 +8,7 @@ use Contao\CoreBundle\Controller\FrontendModule\AbstractFrontendModuleController
 use Contao\CoreBundle\DependencyInjection\Attribute\AsFrontendModule;
 use Contao\CoreBundle\Twig\FragmentTemplate;
 use Contao\ModuleModel;
+use Contao\StringUtil;
 use MummertMedia\EventManagerBundle\Service\MapModuleDataProvider;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
@@ -33,9 +34,13 @@ class EventMapController extends AbstractFrontendModuleController
         $showOrganizations = '1' === (string) ($model->mapShowOrganizations ?? '');
         $showExternalOrganizations = '1' === (string) ($model->mapShowExternalOrganizations ?? '');
         $showEvents = '1' === (string) ($model->mapShowEvents ?? '');
+        $selectedOrganizationTagIds = array_values(array_unique(array_filter(
+            array_map('intval', StringUtil::deserialize($model->organizationTypeTags ?? null, true)),
+            static fn (int $tagId): bool => $tagId > 0,
+        )));
         $centerMode = (string) ($model->mapCenterMode ?? self::DEFAULT_CENTER_MODE);
         $eventColor = $this->normalizeHexColor((string) ($model->mapEventColor ?? self::DEFAULT_EVENT_COLOR));
-        $organizationColorScheme = trim((string) ($model->mapOrganizationColorScheme ?? ''));
+        $organizationColor = $this->normalizeHexColor((string) ($model->mapOrganizationColor ?? $eventColor), $eventColor);
 
         if (!in_array($centerMode, ['markers', 'custom'], true)) {
             $centerMode = self::DEFAULT_CENTER_MODE;
@@ -48,20 +53,20 @@ class EventMapController extends AbstractFrontendModuleController
         $template->set('mapStyleUrl', self::MAP_STYLE_URL);
         $template->set('mapCenterMode', $centerMode);
         $template->set('mapEventColor', $eventColor);
-        $template->set('mapOrganizationColorScheme', $organizationColorScheme);
+        $template->set('mapOrganizationColor', $organizationColor);
         $template->set('mapCenterLat', trim((string) ($model->mapCenterLat ?? '')));
         $template->set('mapCenterLng', trim((string) ($model->mapCenterLng ?? '')));
         $template->set('mapCenterZoom', (int) ($model->mapCenterZoom ?? 12));
         $template->set('mapItemsJson', json_encode(
-            $this->mapModuleDataProvider->getMapItems($showOrganizations, $showEvents, $showExternalOrganizations),
+            $this->mapModuleDataProvider->getMapItems($showOrganizations, $showEvents, $showExternalOrganizations, $selectedOrganizationTagIds),
             \JSON_HEX_TAG | \JSON_HEX_AMP | \JSON_HEX_APOS | \JSON_HEX_QUOT | \JSON_UNESCAPED_UNICODE | \JSON_THROW_ON_ERROR,
         ));
-        $template->set('mapOrganizationTags', $this->mapModuleDataProvider->getOrganizationTags());
+        $template->set('mapOrganizationTags', $this->mapModuleDataProvider->getOrganizationTags($selectedOrganizationTagIds));
 
         return $template->getResponse();
     }
 
-    private function normalizeHexColor(string $value): string
+    private function normalizeHexColor(string $value, string $fallback = self::DEFAULT_EVENT_COLOR): string
     {
         $normalized = strtoupper(trim($value));
 
@@ -91,6 +96,6 @@ class EventMapController extends AbstractFrontendModuleController
             );
         }
 
-        return self::DEFAULT_EVENT_COLOR;
+        return $fallback;
     }
 }

src/Service/MapModuleDataProvider.php

@@ -26,12 +26,17 @@ class MapModuleDataProvider
     /**
         * @return list<array{type:string,markerType:string,id:int,title:string,latitude:float,longitude:float,extra:array<string,mixed>}>
      */
-    public function getMapItems(bool $includeOrganizations = true, bool $includeEvents = true, bool $includeExternalOrganizations = false): array
+    public function getMapItems(bool $includeOrganizations = true, bool $includeEvents = true, bool $includeExternalOrganizations = false, array $selectedOrganizationTagIds = []): array
     {
         if (!$includeOrganizations && !$includeEvents) {
             return [];
         }
 
+        $selectedOrganizationTagIds = array_values(array_unique(array_map(
+            static fn (int|string $tagId): string => (string) (int) $tagId,
+            array_filter($selectedOrganizationTagIds, static fn (int|string $tagId): bool => (int) $tagId > 0),
+        )));
+
         $locationTable = $this->resolveExistingTable(['tl_location']);
         $organizationTable = $this->resolveExistingTable(['tl_organization', 'tl_organisation']);
         $locationGeoColumns = null !== $locationTable ? $this->resolveGeoColumns($locationTable) : null;
@@ -76,6 +81,12 @@ class MapModuleDataProvider
 
                 $seen['organisation'][$id] = true;
                 $tagData = $organizationTagMap[$id] ?? ['ids' => [], 'labels' => []];
+
+                if ([] !== $selectedOrganizationTagIds
+                    && [] === array_intersect($selectedOrganizationTagIds, $tagData['ids'] ?? [])) {
+                    continue;
+                }
+
                 $items[] = [
                     'type' => 'organisation',
                     'markerType' => $this->buildOrganizationMarkerType($tagData['ids']),
@@ -152,12 +163,17 @@ class MapModuleDataProvider
     /**
      * @return list<array{id:int,label:string}>
      */
-    public function getOrganizationTags(): array
+    public function getOrganizationTags(array $selectedTagIds = []): array
     {
         if (!$this->tableExists('tl_tags')) {
             return [];
         }
 
+        $selectedTagIds = array_values(array_unique(array_filter(
+            array_map('intval', $selectedTagIds),
+            static fn (int $tagId): bool => $tagId > 0,
+        )));
+
         $columns = $this->getColumnMap('tl_tags');
         $labelColumn = isset($columns['title']) ? 'title' : (isset($columns['tag']) ? 'tag' : null);
 
@@ -171,6 +187,12 @@ class MapModuleDataProvider
             ->from('tl_tags', 't')
             ->orderBy(sprintf('t.%s', $labelColumn), 'ASC');
 
+        if ([] !== $selectedTagIds) {
+            $qb
+                ->andWhere('t.id IN (:selectedTagIds)')
+                ->setParameter('selectedTagIds', $selectedTagIds, ArrayParameterType::INTEGER);
+        }
+
         if (isset($columns['invisible'])) {
             $qb->andWhere("(t.invisible IS NULL OR t.invisible = '' OR t.invisible = '0')");
         }