> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sublay.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Use block manager

> Manage block state between the current user and another user in a single hook

## Overview

Combines block-status fetching and toggle actions into a single hook. On mount, loads whether the current user blocks `userId`, then provides a `toggleBlock` function to block or unblock in one call. This is the hook to wire to a block/unblock button.

Blocking is part of the trust & safety (moderation) bundle. See [Moderation — Blocking](/sdk/moderation/overview#blocking) for what a block prevents and hides.

## Usage Example

```tsx theme={null}
import { useBlockManager } from "@sublay/react-js";

function BlockButton({ userId }: { userId: string }) {
  const { isBlocked, isLoading, toggleBlock } = useBlockManager({ userId });

  return (
    <button onClick={toggleBlock} disabled={isLoading || isBlocked === null}>
      {isBlocked ? "Unblock" : "Block"}
    </button>
  );
}
```

## Parameters

<ParamField path="userId" type="string" required>
  The ID of the target user.
</ParamField>

## Returns

<ResponseField name="isBlocked" type="boolean | null">
  `true` if the current user blocks the target, `false` if not, `null` while the initial status is loading.
</ResponseField>

<ResponseField name="isLoading" type="boolean">
  `true` while the initial status check is in progress.
</ResponseField>

<ResponseField name="toggleBlock" type="() => Promise<void>">
  Blocks the target user if not currently blocked; unblocks if currently blocked. No-ops while loading or if `userId` is the current user's own ID.
</ResponseField>

## Related

* [useBlockUser](/hooks/blocks/use-block-user)
* [useUnblockUser](/hooks/blocks/use-unblock-user)
* [useFetchBlockStatus](/hooks/blocks/use-fetch-block-status)
* [useFetchBlockedUsers](/hooks/blocks/use-fetch-blocked-users)