frontend/src/components/modals/AssignItemForModal.jsx

@@ -1,4 +1,5 @@
-import { useEffect, useMemo, useRef, useState } from "react";
+import { useCallback, useEffect, useMemo, useRef, useState } from "react";
+import { createPortal } from "react-dom";
 import "../../styles/components/AssignItemForModal.css";
 
 function getMemberLabel(member) {
@@ -19,7 +20,9 @@ export default function AssignItemForModal({
 }) {
   const [selectedUserId, setSelectedUserId] = useState("");
   const [isDropdownOpen, setIsDropdownOpen] = useState(false);
-  const dropdownRef = useRef(null);
+  const [dropdownStyle, setDropdownStyle] = useState(null);
+  const triggerRef = useRef(null);
+  const menuRef = useRef(null);
 
   const hasMembers = members.length > 0;
   const selectedMember = useMemo(
@@ -27,10 +30,39 @@ export default function AssignItemForModal({
     [members, selectedUserId]
   );
 
+  const updateDropdownPosition = useCallback(() => {
+    if (!triggerRef.current) return;
+
+    const rect = triggerRef.current.getBoundingClientRect();
+    const viewportPadding = 16;
+    const menuGap = 6;
+    const width = Math.min(rect.width, window.innerWidth - (2 * viewportPadding));
+    const left = Math.min(
+      Math.max(viewportPadding, rect.left),
+      window.innerWidth - width - viewportPadding
+    );
+    const availableBelow = window.innerHeight - rect.bottom - menuGap - viewportPadding;
+    const availableAbove = rect.top - menuGap - viewportPadding;
+    const shouldOpenAbove = availableBelow < 140 && availableAbove > availableBelow;
+    const maxHeight = Math.max(
+      120,
+      Math.min(240, Math.floor(shouldOpenAbove ? availableAbove : availableBelow))
+    );
+
+    setDropdownStyle({
+      left: `${Math.round(left)}px`,
+      width: `${Math.round(width)}px`,
+      maxHeight: `${maxHeight}px`,
+      top: shouldOpenAbove ? "auto" : `${Math.round(rect.bottom + menuGap)}px`,
+      bottom: shouldOpenAbove ? `${Math.round(window.innerHeight - rect.top + menuGap)}px` : "auto",
+    });
+  }, []);
+
   useEffect(() => {
     if (!isOpen) return;
     setSelectedUserId(members[0] ? String(members[0].id) : "");
     setIsDropdownOpen(false);
+    setDropdownStyle(null);
   }, [isOpen, members]);
 
   useEffect(() => {
@@ -54,8 +86,10 @@ export default function AssignItemForModal({
     if (!isOpen || !isDropdownOpen) return undefined;
 
     const handlePointerDown = (event) => {
-      if (!dropdownRef.current) return;
+      const clickedTrigger = triggerRef.current?.contains(event.target);
-      if (!dropdownRef.current.contains(event.target)) {
+      const clickedMenu = menuRef.current?.contains(event.target);
+
+      if (!clickedTrigger && !clickedMenu) {
         setIsDropdownOpen(false);
       }
     };
@@ -64,6 +98,24 @@ export default function AssignItemForModal({
     return () => window.removeEventListener("pointerdown", handlePointerDown);
   }, [isDropdownOpen, isOpen]);
 
+  useEffect(() => {
+    if (!isOpen || !isDropdownOpen) return undefined;
+
+    updateDropdownPosition();
+
+    const handleViewportChange = () => {
+      updateDropdownPosition();
+    };
+
+    window.addEventListener("resize", handleViewportChange);
+    window.addEventListener("scroll", handleViewportChange, true);
+
+    return () => {
+      window.removeEventListener("resize", handleViewportChange);
+      window.removeEventListener("scroll", handleViewportChange, true);
+    };
+  }, [isDropdownOpen, isOpen, updateDropdownPosition]);
+
   if (!isOpen) return null;
 
   const handleConfirm = () => {
@@ -71,6 +123,52 @@ export default function AssignItemForModal({
     onConfirm(selectedMember.id);
   };
 
+  const handleToggleDropdown = () => {
+    if (isDropdownOpen) {
+      setIsDropdownOpen(false);
+      return;
+    }
+
+    updateDropdownPosition();
+    setIsDropdownOpen(true);
+  };
+
+  const dropdownMenu = isDropdownOpen && dropdownStyle
+    ? createPortal(
+      <div
+        ref={menuRef}
+        className="assign-item-for-dropdown-menu"
+        role="listbox"
+        aria-label="Household member"
+        style={dropdownStyle}
+        onClick={(event) => event.stopPropagation()}
+      >
+        {members.map((member) => {
+          const memberId = String(member.id);
+          const isSelected = memberId === String(selectedUserId);
+
+          return (
+            <button
+              key={member.id}
+              type="button"
+              className={`assign-item-for-dropdown-option ${isSelected ? "is-selected" : ""}`}
+              role="option"
+              aria-selected={isSelected}
+              onClick={() => {
+                setSelectedUserId(memberId);
+                setIsDropdownOpen(false);
+              }}
+              title={getMemberLabel(member)}
+            >
+              {getMemberOptionLabel(member)}
+            </button>
+          );
+        })}
+      </div>,
+      document.body
+    )
+    : null;
+
   return (
     <div className="modal-overlay" onClick={onCancel}>
       <div className="modal assign-item-for-modal" onClick={(event) => event.stopPropagation()}>
@@ -81,13 +179,14 @@ export default function AssignItemForModal({
             <label className="form-label">
               Household member
             </label>
-            <div className="assign-item-for-dropdown" ref={dropdownRef}>
+            <div className="assign-item-for-dropdown">
               <button
+                ref={triggerRef}
                 type="button"
                 className={`assign-item-for-dropdown-trigger ${isDropdownOpen ? "is-open" : ""}`}
                 aria-haspopup="listbox"
                 aria-expanded={isDropdownOpen}
-                onClick={() => setIsDropdownOpen((prev) => !prev)}
+                onClick={handleToggleDropdown}
               >
                 <span className="assign-item-for-dropdown-label">
                   {selectedMember ? getMemberOptionLabel(selectedMember) : "Select member"}
@@ -96,32 +195,6 @@ export default function AssignItemForModal({
                   {isDropdownOpen ? "▲" : "▼"}
                 </span>
               </button>
-
-              {isDropdownOpen ? (
-                <div className="assign-item-for-dropdown-menu" role="listbox" aria-label="Household member">
-                  {members.map((member) => {
-                    const memberId = String(member.id);
-                    const isSelected = memberId === String(selectedUserId);
-
-                    return (
-                      <button
-                        key={member.id}
-                        type="button"
-                        className={`assign-item-for-dropdown-option ${isSelected ? "is-selected" : ""}`}
-                        role="option"
-                        aria-selected={isSelected}
-                        onClick={() => {
-                          setSelectedUserId(memberId);
-                          setIsDropdownOpen(false);
-                        }}
-                        title={getMemberLabel(member)}
-                      >
-                        {getMemberOptionLabel(member)}
-                      </button>
-                    );
-                  })}
-                </div>
-              ) : null}
             </div>
           </div>
         ) : (
@@ -144,6 +217,7 @@ export default function AssignItemForModal({
           </button>
         </div>
       </div>
+      {dropdownMenu}
     </div>
   );
 }

frontend/src/styles/components/AssignItemForModal.css

@@ -2,6 +2,7 @@
   width: min(420px, calc(100vw - (2 * var(--spacing-md))));
   max-width: 420px;
   overflow-x: hidden;
+  overflow-y: visible;
 }
 
 .assign-item-for-modal-field {
@@ -54,13 +55,10 @@
 }
 
 .assign-item-for-dropdown-menu {
-  position: absolute;
+  position: fixed;
-  top: calc(100% + 6px);
+  z-index: var(--z-tooltip);
-  left: 0;
-  right: 0;
-  z-index: 3;
-  max-height: 180px;
   overflow-y: auto;
+  overscroll-behavior: contain;
   background: var(--color-bg-surface);
   border: var(--border-width-thin) solid var(--input-border-color);
   border-radius: var(--border-radius-md);

frontend/tests/grocery-list-assignment.spec.ts

@@ -0,0 +1,233 @@
+import { expect, test } from "@playwright/test";
+
+function seedAuthStorage(page: import("@playwright/test").Page) {
+  return page.addInitScript(() => {
+    localStorage.setItem("token", "test-token");
+    localStorage.setItem("userId", "1");
+    localStorage.setItem("role", "admin");
+    localStorage.setItem("username", "assignment-user");
+  });
+}
+
+async function mockConfig(page: import("@playwright/test").Page) {
+  await page.route("**/config", async (route) => {
+    await route.fulfill({
+      status: 200,
+      contentType: "application/json",
+      body: JSON.stringify({
+        maxFileSizeMB: 20,
+        maxImageDimension: 800,
+        imageQuality: 85,
+      }),
+    });
+  });
+}
+
+test("assigned items render selected users and keep the picker menu outside the modal", async ({ page }) => {
+  await seedAuthStorage(page);
+  await mockConfig(page);
+
+  const members = [
+    { id: 1, username: "owner", name: "Owner User", display_name: "Owner User", role: "owner" },
+    { id: 2, username: "casey", name: "Casey Client", display_name: "Casey Client", role: "member" },
+    { id: 3, username: "jordan", name: "Jordan Client", display_name: "Jordan Client", role: "member" },
+    { id: 4, username: "alex", name: "Alex Member", display_name: "Alex Member", role: "member" },
+    { id: 5, username: "morgan", name: "Morgan Member", display_name: "Morgan Member", role: "member" },
+    { id: 6, username: "sam", name: "Sam Member", display_name: "Sam Member", role: "member" },
+    { id: 7, username: "jamie", name: "Jamie Member", display_name: "Jamie Member", role: "member" },
+    { id: 8, username: "pat", name: "Pat Member", display_name: "Pat Member", role: "member" },
+    { id: 9, username: "drew", name: "Drew Member", display_name: "Drew Member", role: "member" },
+    { id: 10, username: "kai", name: "Kai Member", display_name: "Kai Member", role: "member" },
+    { id: 11, username: "blair", name: "Blair Member", display_name: "Blair Member", role: "member" },
+    { id: 12, username: "quinn", name: "Quinn Member", display_name: "Quinn Member", role: "member" },
+    { id: 13, username: "rowan", name: "Rowan Member", display_name: "Rowan Member", role: "member" },
+    { id: 14, username: "sage", name: "Sage Member", display_name: "Sage Member", role: "member" },
+    { id: 15, username: "taylor", name: "Taylor Member", display_name: "Taylor Member", role: "member" },
+    { id: 16, username: "river", name: "River Member", display_name: "River Member", role: "member" },
+  ];
+
+  let listItems: Array<{
+    id: number;
+    item_id: number;
+    item_name: string;
+    quantity: number;
+    bought: boolean;
+    item_image: string | null;
+    image_mime_type: string | null;
+    added_by_users: string[];
+    last_added_on: string;
+    item_type: string | null;
+    item_group: string | null;
+    zone: string | null;
+  }> = [];
+  let addCallCount = 0;
+
+  await page.route("**/households", async (route) => {
+    await route.fulfill({
+      status: 200,
+      contentType: "application/json",
+      body: JSON.stringify([
+        { id: 1, name: "Assignment House", role: "admin", invite_code: "ABCD1234" },
+      ]),
+    });
+  });
+
+  await page.route("**/stores/household/1", async (route) => {
+    await route.fulfill({
+      status: 200,
+      contentType: "application/json",
+      body: JSON.stringify([
+        { id: 10, name: "Costco", location: "Warehouse", is_default: true },
+      ]),
+    });
+  });
+
+  await page.route("**/households/1/members", async (route) => {
+    await route.fulfill({
+      status: 200,
+      contentType: "application/json",
+      body: JSON.stringify(members),
+    });
+  });
+
+  await page.route("**/households/1/stores/10/list/recent", async (route) => {
+    await route.fulfill({
+      status: 200,
+      contentType: "application/json",
+      body: JSON.stringify([]),
+    });
+  });
+
+  await page.route("**/households/1/stores/10/list/suggestions**", async (route) => {
+    await route.fulfill({
+      status: 200,
+      contentType: "application/json",
+      body: JSON.stringify([]),
+    });
+  });
+
+  await page.route("**/households/1/stores/10/list/item**", async (route) => {
+    const url = new URL(route.request().url());
+    const itemName = (url.searchParams.get("item_name") || "").toLowerCase();
+    const item = listItems.find((candidate) => candidate.item_name === itemName);
+
+    await route.fulfill({
+      status: item ? 200 : 404,
+      contentType: "application/json",
+      body: JSON.stringify(item || { message: "Item not found" }),
+    });
+  });
+
+  await page.route("**/households/1/stores/10/list/add", async (route) => {
+    addCallCount += 1;
+
+    if (addCallCount === 1) {
+      listItems = [
+        {
+          id: 201,
+          item_id: 501,
+          item_name: "bananas",
+          quantity: 1,
+          bought: false,
+          item_image: null,
+          image_mime_type: null,
+          added_by_users: ["Casey Client"],
+          last_added_on: "2026-03-28T12:00:00.000Z",
+          item_type: null,
+          item_group: null,
+          zone: null,
+        },
+      ];
+    } else {
+      listItems = [
+        {
+          id: 201,
+          item_id: 501,
+          item_name: "bananas",
+          quantity: 2,
+          bought: false,
+          item_image: null,
+          image_mime_type: null,
+          added_by_users: ["Casey Client", "Jordan Client"],
+          last_added_on: "2026-03-28T12:05:00.000Z",
+          item_type: null,
+          item_group: null,
+          zone: null,
+        },
+      ];
+    }
+
+    await route.fulfill({
+      status: 200,
+      contentType: "application/json",
+      body: JSON.stringify({
+        message: addCallCount === 1 ? "Item added" : "Item updated",
+        item: {
+          id: 201,
+          item_name: "bananas",
+          quantity: addCallCount === 1 ? 1 : 2,
+          bought: false,
+        },
+      }),
+    });
+  });
+
+  await page.route("**/households/1/stores/10/list", async (route) => {
+    await route.fulfill({
+      status: 200,
+      contentType: "application/json",
+      body: JSON.stringify({ items: listItems }),
+    });
+  });
+
+  await page.goto("/");
+
+  await expect(page.getByRole("heading", { name: "Grocery List" })).toBeVisible();
+  await page.getByPlaceholder("Enter item name").fill("bananas");
+  await page.getByRole("button", { name: "Others" }).click();
+
+  const assignModal = page.locator(".assign-item-for-modal");
+  await expect(assignModal).toBeVisible();
+
+  await assignModal.getByRole("button", { name: "Select member" }).click();
+
+  const portalMenu = page.locator("body > .assign-item-for-dropdown-menu");
+  await expect(portalMenu).toBeVisible();
+  await expect(page.locator(".assign-item-for-modal .assign-item-for-dropdown-menu")).toHaveCount(0);
+
+  const dropdownMetrics = await portalMenu.evaluate((element) => {
+    const menu = element as HTMLDivElement;
+    return {
+      position: window.getComputedStyle(menu).position,
+      scrollable: menu.scrollHeight > menu.clientHeight,
+    };
+  });
+
+  expect(dropdownMetrics.position).toBe("fixed");
+  expect(dropdownMetrics.scrollable).toBe(true);
+
+  await portalMenu.getByRole("option", { name: "Casey Client" }).click();
+  await assignModal.getByRole("button", { name: "Confirm" }).click();
+
+  await expect(page.getByText("Adding for: Casey Client")).toBeVisible();
+  await page.getByRole("button", { name: "Create + Add" }).click();
+  await page.getByRole("button", { name: "Skip All" }).click();
+
+  const bananasRow = page.locator(".glist-li").filter({ hasText: "bananas" });
+  await expect(bananasRow).toContainText("Casey Client");
+  await expect(page.locator(".action-toast.action-toast-success")).toContainText("Added item");
+
+  await page.getByPlaceholder("Enter item name").fill("bananas");
+  await page.getByRole("button", { name: "Others" }).click();
+  await assignModal.getByRole("button", { name: "Select member" }).click();
+  await portalMenu.getByRole("option", { name: "Jordan Client" }).click();
+  await assignModal.getByRole("button", { name: "Confirm" }).click();
+
+  await expect(page.getByText("Adding for: Jordan Client")).toBeVisible();
+  await page.getByRole("button", { name: "Create + Add" }).click();
+  await page.getByRole("button", { name: "Update Quantity" }).click();
+
+  await expect(bananasRow).toContainText("Casey Client");
+  await expect(bananasRow).toContainText("Jordan Client");
+  await expect(page.locator(".action-toast.action-toast-success")).toContainText("Updated item quantity");
+});