feat: add trip-specific items

including trip_id in item creation and listing

backend/crud.py

@@ -48,8 +48,8 @@ def render_name(name_template: str, start: Optional[date], end: Optional[date])
     return _placeholder_re.sub(repl, name_template)
 
 
-def items_for_trip(db: Session, user_id: UUID_t, selected_tag_ids: List[UUID_t]) -> List[models.Item]:
-    # Items without tags (always) + items with any of the selected_tags,
+def items_for_trip(db: Session, user_id: UUID_t, trip: models.Trip, selected_tag_ids: List[UUID_t]) -> List[models.Item]:
+    # Items without trip_id and tags (always) + items without trip_id and with any of the selected_tags + items with trip_id equal to the current trip
     # but: if an item has a mandatory tag, it is only included if at least one of its mandatory tags is selected.
     q = (
         db.query(models.Item)
@@ -61,16 +61,20 @@ def items_for_trip(db: Session, user_id: UUID_t, selected_tag_ids: List[UUID_t])
     selected_set = set(selected_tag_ids)
     result: List[models.Item] = []
     for it in items:
-        item_tag_ids = {tag.id for tag in it.tags}
-        mandatory_tag_ids = {tag.id for tag in it.tags if getattr(tag, "mandatory", False)}
-        if not item_tag_ids:
-            result.append(it)
-        elif mandatory_tag_ids:
-            # Only include if at least one mandatory tag is selected
-            if selected_set & mandatory_tag_ids:
+        if it.trip_id is None:
+            item_tag_ids = {tag.id for tag in it.tags}
+            mandatory_tag_ids = {tag.id for tag in it.tags if getattr(tag, "mandatory", False)}
+            if not item_tag_ids:
                 result.append(it)
-        elif selected_set & item_tag_ids:
+            elif mandatory_tag_ids:
+                # Only include if at least one mandatory tag is selected
+                if selected_set & mandatory_tag_ids:
+                    result.append(it)
+            elif selected_set & item_tag_ids:
+                result.append(it)
+        elif it.trip_id == trip.id:
             result.append(it)
+
     return result
 
 
@@ -93,7 +97,7 @@ def generate_trip_items(
         db.delete(ti)
     db.flush()
 
-    items = items_for_trip(db, trip.user_id, selected_tag_ids)
+    items = items_for_trip(db, trip.user_id, trip, selected_tag_ids)
 
     created_ids: List[UUID_t] = []
     marked_set = set(marked_tag_ids)

backend/models.py

@@ -62,10 +62,13 @@ class Item(Base):
     id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
     user_id = Column(UUID(as_uuid=True), ForeignKey("user.id", ondelete="CASCADE"), nullable=False)
     name = Column(String, nullable=False)
+    # Optional association to a specific trip
+    trip_id = Column(UUID(as_uuid=True), ForeignKey("trip.id"), nullable=True)
 
     user = relationship("User", backref="items")
     tags = relationship("Tag", secondary=item_tag_table, backref="items")
     trip_items = relationship("TripItem", back_populates="item", cascade="all, delete-orphan")
+    trip = relationship("Trip", backref="special_items")
             
 
 class Trip(Base):

backend/routes/items.py

@@ -16,7 +16,6 @@ def list_items(db: Session = Depends(get_db)):
 
 @router.post("/", response_model=ItemOut)
 def create_item(payload: ItemCreate, db: Session = Depends(get_db)):
-    # Demo: use first user or create one if none exists
     user = db.query(models.User).first()
     if not user:
         from uuid import uuid4
@@ -24,8 +23,7 @@ def create_item(payload: ItemCreate, db: Session = Depends(get_db)):
         db.add(user)
         db.flush()
 
-    # Create the item
-    item = models.Item(user_id=user.id, name=payload.name)
+    item = models.Item(user_id=user.id, name=payload.name, trip_id=payload.trip_id)
 
     # Attach tags if provided
     if payload.tag_ids:

backend/schemas.py

@@ -23,10 +23,12 @@ class ItemBase(BaseModel):
 
 class ItemCreate(ItemBase):
     tag_ids: List[UUID] = []
+    trip_id: Optional[UUID] = None
 
 class ItemOut(ItemBase):
     id: UUID
     tags: List[TagOut] = []
+    trip_id: Optional[UUID] = None
     class Config:
         orm_mode = True
 

frontend/src/api.ts

@@ -8,6 +8,7 @@ export interface Item {
   id: string;
   name: string;
   tags: Tag[];
+  trip_id: string;
 }
 
 const API_BASE = "http://localhost:8000"; // ggf. anpassen
@@ -74,13 +75,14 @@ export async function addItemTag(itemId: string, tagId: string): Promise<Item> {
   return res.json();
 }
 
-export async function createItem(name: string, tagIds: string[]): Promise<Item> {
+export async function createItem(name: string, tagIds: string[], tripId?: string): Promise<Item> {
   const res = await fetch(`${API_BASE}/items/`, {
     method: "POST",
     headers: { "Content-Type": "application/json" },
     body: JSON.stringify({
       name,
       tag_ids: tagIds,
+      trip_id: tripId || null,
     }),
   });
   if (!res.ok) throw new Error("Failed to create item");

frontend/src/components/ItemList.tsx

@@ -14,11 +14,12 @@ interface ItemListProps {
 export default function ItemList({
   items,
   allTags,
+  trips,
   onUpdateName,
   onDeleteTag,
   onAddTag,
   onDeleteItem,
-}: ItemListProps) {
+}: ItemListProps & { trips: { id: string; name: string }[] }) {
   if (items.length === 0) {
     return <p className="text-gray-500 italic">Keine Items gefunden.</p>;
   }
@@ -30,6 +31,7 @@ export default function ItemList({
           key={item.id}
           item={item}
           allTags={allTags}
+          trips={trips}
           onUpdateName={onUpdateName}
           onDeleteTag={onDeleteTag}
           onAddTag={onAddTag}

frontend/src/components/ItemRow.tsx

@@ -13,11 +13,12 @@ interface ItemRowProps {
 export default function ItemRow({
   item,
   allTags,
+  trips,
   onUpdateName,
   onDeleteTag,
   onAddTag,
   onDeleteItem,
-}: ItemRowProps) {
+}: ItemRowProps & { trips: { id: string; name: string }[] }) {
   const [isEditing, setIsEditing] = useState(false);
   const [editName, setEditName] = useState(item.name);
   const [hover, setHover] = useState(false);
@@ -49,6 +50,12 @@ export default function ItemRow({
     );
   }
 
+  // Trip-Namen lookup
+  const tripName =
+    item.trip_id && trips
+      ? trips.find((t) => t.id === item.trip_id)?.name
+      : null;
+
   return (
     <li
       className="flex flex-wrap items-center gap-2 py-1 border-b group"
@@ -100,6 +107,12 @@ export default function ItemRow({
         </span>
       ))}
 
+      {tripName && (
+        <span className="ml-2 px-2 py-0.5 rounded bg-yellow-100 text-yellow-800 text-xs font-semibold">
+          {tripName}
+        </span>
+      )}
+
       {hover && !addingTag && (
         <button
           className="text-xs text-blue-500 hover:underline"

frontend/src/pages/ItemsPage.tsx

@@ -13,6 +13,12 @@ import {
 import ItemList from "../components/ItemList";
 import TagFilter from "../components/TagFilter";
 
+async function fetchTrips(): Promise<{ id: string; name: string }[]> {
+  const res = await fetch("http://localhost:8000/trips/");
+  if (!res.ok) throw new Error("Failed to fetch trips");
+  return res.json();
+}
+
 function normalizeName(name: string): string {
   return name
     .replace(/\{.*?\}/g, "") // {...} entfernen
@@ -23,6 +29,7 @@ function normalizeName(name: string): string {
 export default function ItemsPage() {
   const [items, setItems] = useState<Item[]>([]);
   const [tags, setTags] = useState<Tag[]>([]);
+  const [trips, setTrips] = useState<{ id: string; name: string }[]>([]);
   const [filterText, setFilterText] = useState("");
   const [selectedTags, setSelectedTags] = useState<string[]>([]);
   const [loading, setLoading] = useState(false);
@@ -30,14 +37,20 @@ export default function ItemsPage() {
   // State für neue ItemRow
   const [newItemName, setNewItemName] = useState("");
   const [newItemTags, setNewItemTags] = useState<string[]>([]);
+  const [newItemTripId, setNewItemTripId] = useState<string>("");
   const [adding, setAdding] = useState(false);
 
   async function loadData() {
     setLoading(true);
     try {
-      const [itemsData, tagsData] = await Promise.all([getItems(), getTags()]);
+      const [itemsData, tagsData, tripsData] = await Promise.all([
+        getItems(),
+        getTags(),
+        fetchTrips(),
+      ]);
       setItems(itemsData);
       setTags(tagsData);
+      setTrips(tripsData);
     } finally {
       setLoading(false);
     }
@@ -57,10 +70,11 @@ export default function ItemsPage() {
     if (!newItemName.trim()) return;
     setAdding(true);
     try {
-      const newItem = await createItem(newItemName.trim(), newItemTags);
+      const newItem = await createItem(newItemName.trim(), newItemTags, newItemTripId || undefined);
       setItems((prev) => [...prev, newItem]);
       setNewItemName("");
       setNewItemTags([]);
+      setNewItemTripId("");
     } finally {
       setAdding(false);
     }
@@ -144,7 +158,24 @@ export default function ItemsPage() {
             }}
             disabled={adding}
           />
-          {tags.map((tag) => (
+          {/* Trip-Auswahl */}
+          <select
+            className="border rounded px-1 py-0.5"
+            value={newItemTripId}
+            onChange={e => {
+              setNewItemTripId(e.target.value);
+              if (e.target.value) setNewItemTags([]); // Tags zurücksetzen, wenn Trip gewählt
+            }}
+          >
+            <option value="">(gültig für alle Trips)</option>
+            {trips.map((trip) => (
+              <option key={trip.id} value={trip.id}>
+                {trip.name}
+              </option>
+            ))}
+          </select>
+          {/* Tags-Auswahl, nur wenn kein Trip gewählt */}
+          {!newItemTripId && tags.map((tag) => (
             <span
               key={tag.id}
               className={
@@ -163,6 +194,12 @@ export default function ItemsPage() {
               )}
             </span>
           ))}
+          {/* Hinweis, falls Trip gewählt */}
+          {newItemTripId && (
+            <span className="text-xs text-gray-500 italic">
+              Dieses Item gilt nur für den gewählten Trip. Tags werden ignoriert.
+            </span>
+          )}
           <button
             className="text-xs text-green-600 bg-green-100 rounded px-2 py-1 ml-auto"
             onClick={handleAddItem}
@@ -175,6 +212,7 @@ export default function ItemsPage() {
         <ItemList
           items={sortedItems}
           allTags={tags}
+          trips={trips}
           onUpdateName={handleRenameItem}
           onDeleteTag={handleDeleteTag}
           onAddTag={handleAddTag}