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stream-chat-flutter/docusaurus/docs/Flutter/stream_chat/searching_messages.mdx
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2021-06-23 12:38:18 +05:30

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---
id: searching_messages
sidebar_position: 20
title: Searching Messages
---
Searching For Messages Across Channels
Message search is built-in to the chat API. You can enable and/or disable the search indexing on a per channel type.
The command shown below selects the channels in which John is a member.
Next, it searches the messages in those channels for the keyword “'supercalifragilisticexpialidocious'”:
```dart
final search = await client.search(
Filter.in_('members', ['john']),
query: 'supercalifragilisticexpialidocious',
paginationParams: PaginationParams(
limit: 2,
offset: 0
),
);
```
Pagination works via the standard limit and offset parameters. The first argument, filter, uses a MongoDB style query expression.
We do not run MongoDB on the backend, so only a subset of the standard MongoDB filters are supported.
Additionally, this endpoint can be used to search for messages that have attachments.
```dart
// Search file of type videos
final response = await channel.search(messageFilter: Filter.in_('attachments.type', ['video']));
return response;
```