# P combobox 12

> Combobox multiple form

A shadcn/ui block from the [@coss](https://coss.com/ui) registry, listed on [shadcn.exchange](https://shadcn.exchange/r/coss/p-combobox-12).

- Page, with a live preview: https://shadcn.exchange/r/coss/p-combobox-12
- Screenshot: https://abzjhwgwpdpz7ua5.public.blob.vercel-storage.com/shots/coss/p-combobox-12-light-f5396083667a9178.png
- Registry item: https://coss.com/ui/r/p-combobox-12.json
- Categories: combobox, form, input
- Listed: 2026-10-13, source last changed 2026-10-13

## Install

```bash
npx shadcn@latest add https://coss.com/ui/r/p-combobox-12.json
```

Run it in a project that has shadcn/ui set up. It adds the files below and installs what they depend on.

## Dependencies

- Registry items: `@coss/button`, `@coss/combobox`, `@coss/field`, `@coss/form`

## Files

### `registry/default/particles/p-combobox-12.tsx`

```tsx
"use client";

import type { FormEvent } from "react";
import { useState } from "react";
import { Button } from "@/registry/default/ui/button";
import {
  Combobox,
  ComboboxChip,
  ComboboxChips,
  ComboboxChipsInput,
  ComboboxEmpty,
  ComboboxItem,
  ComboboxList,
  ComboboxPopup,
  ComboboxValue,
} from "@/registry/default/ui/combobox";
import { Field, FieldError, FieldLabel } from "@/registry/default/ui/field";
import { Form } from "@/registry/default/ui/form";

const items = [
  { label: "Apple", value: "apple" },
  { label: "Banana", value: "banana" },
  { label: "Orange", value: "orange" },
  { label: "Grape", value: "grape" },
  { label: "Strawberry", value: "strawberry" },
  { label: "Mango", value: "mango" },
  { label: "Pineapple", value: "pineapple" },
  { label: "Kiwi", value: "kiwi" },
  { label: "Peach", value: "peach" },
  { label: "Pear", value: "pear" },
];

export default function Particle() {
  const [loading, setLoading] = useState(false);
  const onSubmit = async (e: FormEvent<HTMLFormElement>) => {
    e.preventDefault();
    const formData = new FormData(e.currentTarget);
    const selectedItems = formData.getAll("items");
    const itemValues = selectedItems.map(
      (selectedItem) =>
        items.find((item) => item.label === selectedItem)?.value ||
        selectedItem,
    );
    setLoading(true);
    await new Promise((r) => setTimeout(r, 800));
    setLoading(false);
    alert(`Favorite items: ${itemValues.join(", ") || ""}`);
  };

  return (
    <Form className="flex w-full max-w-64 flex-col gap-4" onSubmit={onSubmit}>
      <Field name="items">
        <FieldLabel>Favorite items</FieldLabel>
        <Combobox items={items} multiple required>
          <ComboboxChips>
            <ComboboxValue>
              {(value: { value: string; label: string }[]) => (
                <>
                  {value?.map((item) => (
                    <ComboboxChip aria-label={item.label} key={item.value}>
                      {item.label}
                    </ComboboxChip>
                  ))}
                  <ComboboxChipsInput
                    placeholder={value.length > 0 ? undefined : "Select items…"}
                  />
                </>
              )}
            </ComboboxValue>
          </ComboboxChips>
          <ComboboxPopup>
            <ComboboxEmpty>No items found.</ComboboxEmpty>
            <ComboboxList>
              {(item) => (
                <ComboboxItem key={item.value} value={item}>
                  {item.label}
                </ComboboxItem>
              )}
            </ComboboxList>
          </ComboboxPopup>
        </Combobox>
        <FieldError>Please select at least one item.</FieldError>
      </Field>
      <Button loading={loading} type="submit">
        Submit
      </Button>
    </Form>
  );
}
```