Additiopn to filter out the iduvidual items and

Web/app.py

@@ -46,7 +46,7 @@ import Web.modules.inventarsystem.pdf_export as pdf_export
 import Web.modules.inventarsystem.excel_export as excel_export
 import datetime
 from apscheduler.schedulers.background import BackgroundScheduler
-from bson.objectid import ObjectId
+from bson.objectid import ObjectId, InvalidId
 from urllib.parse import urlparse, urlunparse
 import requests
 import csv
@@ -3314,6 +3314,7 @@ def api_library_items():
 
         query = {
             'ItemType': {'$in': ['book', 'cd', 'dvd', 'schoolbook', 'schulbuch', 'Buch', 'Schulbuch']},
+            'IsGroupedSubItem': {'$ne': True},
             'Deleted': {'$ne': True}
         }
 
@@ -6366,6 +6367,181 @@ def edit_item(id):
     return redirect(url_for('home_admin'))
 
 
+@app.route('/item_edit/<id>', methods=['GET', 'POST'])
+def item_edit(id):
+    """
+    Endpoint zum Laden und Aktualisieren eines Eintrags (item_edit).
+    """
+    # 1. Rechte- & Auth-Check
+    if 'username' not in session:
+        if request.method == 'POST' and request.is_json:
+            return jsonify({'success': False, 'message': 'Nicht angemeldet.'}), 401
+        flash('Bitte melden Sie sich an.', 'error')
+        return redirect(url_for('login'))
+
+    current_permissions = us.get_effective_permissions(session['username'])
+    if not current_permissions['actions'].get('can_edit', False):
+        if request.method == 'POST' and request.is_json:
+            return jsonify({'success': False, 'message': 'Keine Berechtigung zum Bearbeiten.'}), 403
+        flash('Keine Berechtigung zum Bearbeiten.', 'error')
+        return redirect(url_for('home_admin'))
+
+    try:
+        obj_id = ObjectId(id)
+    except InvalidId:
+        flash('Ungültige Element-ID.', 'error')
+        return redirect(url_for('home_admin'))
+
+    db = it.db
+    items_col = db['items']
+
+    # --- GET: Template anzeigen ---
+    if request.method == 'GET':
+        item = items_col.find_one({'_id': obj_id})
+        if not item:
+            flash('Element nicht gefunden.', 'error')
+            return redirect(url_for('home_admin'))
+
+        item['_id'] = str(item['_id'])
+        show_library = cfg.MODULES.is_enabled('library')
+
+        return render_template(
+            'item_edit.html',
+            username=session['username'],
+            item=item,
+            library_module_enabled=show_library,
+            show_library_features=show_library,
+            page_title=f"Bearbeiten: {item.get('Name', '')}"
+        )
+
+    # --- POST: Speichern ---
+    redirect_target = request.referrer or url_for('home_admin')
+    current_item = items_col.find_one({'_id': obj_id})
+
+    if not current_item:
+        flash('Element in der Datenbank nicht gefunden.', 'error')
+        return redirect(redirect_target)
+
+    # Formulardaten
+    name = sanitize_form_value(request.form.get('name'))
+    ort = sanitize_form_value(request.form.get('ort'))
+    beschreibung = sanitize_form_value(request.form.get('beschreibung'))
+    code_4 = sanitize_form_value(request.form.get('code_4'))
+    isbn_raw = sanitize_form_value(request.form.get('isbn', ''))
+
+    anschaffungs_jahr = sanitize_form_value(request.form.get('anschaffungsjahr'))
+    anschaffungs_kosten = sanitize_form_value(request.form.get('anschaffungskosten'))
+    reservierbar = 'reservierbar' in request.form
+
+    item_type_input = sanitize_form_value(request.form.get('item_type_input'))
+    library_category = sanitize_form_value(request.form.get('library_category'))
+
+    filter1 = expand_filter_selection(sanitize_form_value(request.form.getlist('filter')), 1)
+    filter2 = expand_filter_selection(sanitize_form_value(request.form.getlist('filter2')), 2)
+    filter3 = sanitize_form_value(request.form.getlist('filter3'))
+
+    # Barcode Prüfen
+    if code_4 and not it.is_code_unique(code_4, exclude_id=str(id)):
+        flash(f'Der Code "{code_4}" wird bereits verwendet.', 'error')
+        return redirect(redirect_target)
+
+    # ISBN
+    item_isbn = ''
+    item_type = item_type_input or current_item.get('ItemType', 'general')
+    if cfg.MODULES.is_enabled('library') and isbn_raw:
+        item_isbn = normalize_and_validate_isbn(isbn_raw)
+        if not item_isbn:
+            flash('Ungültiges ISBN-Format.', 'error')
+            return redirect(redirect_target)
+
+    # Bilder verarbeiten
+    images_to_keep = request.form.getlist('existing_images')
+    original_images = current_item.get('Images', [])
+    images = [img for img in original_images if img in images_to_keep]
+
+    new_files = request.files.getlist('images')
+    if new_files and new_files[0].filename != '':
+        fs = get_gridfs()
+        for file in new_files:
+            if file and file.filename:
+                is_allowed, error_msg = allowed_file(file.filename, file)
+                if not is_allowed:
+                    flash(error_msg, 'error')
+                    return redirect(redirect_target)
+
+                try:
+                    secure_name = secure_filename(file.filename)
+                    file.seek(0)
+                    image_bytes = file.read()
+
+                    if not image_bytes:
+                        continue
+
+                    optimized_io = io.BytesIO()
+                    with Image.open(io.BytesIO(image_bytes)) as img:
+                        if img.mode not in ('RGB', 'RGBA'):
+                            img = img.convert('RGBA')
+
+                        max_width = 800
+                        if img.width > max_width:
+                            ratio = max_width / img.width
+                            img = img.resize((max_width, int(img.height * ratio)), Image.Resampling.LANCZOS)
+
+                        img.save(optimized_io, format='WEBP', quality=85, optimize=True)
+
+                    optimized_io.seek(0)
+                    new_filename = f"{uuid.uuid4().hex}_{int(time.time())}.webp"
+
+                    fs.put(
+                        optimized_io,
+                        filename=new_filename,
+                        content_type='image/webp',
+                        metadata={'original_filename': secure_name, 'item_id': str(id)}
+                    )
+                    images.append(new_filename)
+                except Exception as e:
+                    app.logger.error(f"Bild-Fehler bei Item {id}: {e}")
+
+    if ort and ort not in it.get_predefined_locations():
+        it.add_predefined_location(ort)
+
+    # Datenstruktur für Update
+    shared_fields = {
+        'Name': name,
+        'Ort': ort,
+        'Beschreibung': beschreibung,
+        'Anschaffungsjahr': anschaffungs_jahr,
+        'Anschaffungskosten': anschaffungs_kosten,
+        'Reservierbar': reservierbar,
+        'ISBN': item_isbn,
+        'ItemType': item_type,
+        'Kategorie': library_category,
+        'LastUpdated': datetime.datetime.now()
+    }
+
+    # Gruppen-Update
+    group_item_ids = it.get_group_item_ids(str(id))
+
+    if group_item_ids:
+        group_object_ids = [ObjectId(g_id) for g_id in group_item_ids]
+        items_col.update_many({'_id': {'$in': group_object_ids}}, {'$set': shared_fields})
+
+    # Individual-Update
+    individual_update = {
+        **shared_fields,
+        'Code_4': code_4,
+        'Images': images,
+        'Filter1': filter1,
+        'Filter2': filter2,
+        'Filter3': filter3
+    }
+
+    items_col.update_one({'_id': obj_id}, {'$set': individual_update})
+
+    flash('Artikel erfolgreich aktualisiert.', 'success')
+    return redirect(redirect_target)
+
+
 @app.route('/update_group', methods=['POST'])
 def update_group():