# P toast 8

> Anchored error toast after async failure

A shadcn/ui block from the [@coss](https://coss.com/ui) registry, listed on [shadcn.exchange](https://shadcn.exchange/r/coss/p-toast-8).

- Page, with a live preview: https://shadcn.exchange/r/coss/p-toast-8
- Screenshot: https://abzjhwgwpdpz7ua5.public.blob.vercel-storage.com/shots/coss/p-toast-8-light-f5d0abdded49cd74.png
- Registry item: https://coss.com/ui/r/p-toast-8.json
- Categories: toast
- Listed: 2026-10-13, source last changed 2026-10-13

## Install

```bash
npx shadcn@latest add https://coss.com/ui/r/p-toast-8.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/spinner`, `@coss/toast`

## Files

### `registry/default/particles/p-toast-8.tsx`

```tsx
"use client";

import { useRef, useState } from "react";
import { Button } from "@/registry/default/ui/button";
import { Spinner } from "@/registry/default/ui/spinner";
import { anchoredToastManager } from "@/registry/default/ui/toast";

export default function Particle() {
  const submitRef = useRef<HTMLButtonElement>(null);
  const [isSubmitting, setIsSubmitting] = useState(false);
  const toastIdRef = useRef<string | null>(null);

  function handleSubmit() {
    if (!submitRef.current || isSubmitting) return;

    if (toastIdRef.current) {
      anchoredToastManager.close(toastIdRef.current);
      toastIdRef.current = null;
    }

    setIsSubmitting(true);

    new Promise<void>((_, reject) => {
      setTimeout(() => {
        setIsSubmitting(false);
        reject(
          new Error("The server is not responding. Please try again later."),
        );
      }, 2000);
    }).catch((error: Error) => {
      toastIdRef.current = anchoredToastManager.add({
        description: error.message,
        positionerProps: {
          anchor: submitRef.current,
          sideOffset: 4,
        },
        title: "Error submitting form",
        type: "error",
      });
    });
  }

  return (
    <Button
      disabled={isSubmitting}
      onClick={handleSubmit}
      ref={submitRef}
      variant="outline"
    >
      {isSubmitting ? (
        <>
          <Spinner />
          Submitting…
        </>
      ) : (
        "Submit"
      )}
    </Button>
  );
}
```