# `ExGram.Model.MessageReactionUpdated`
[🔗](https://github.com/rockneurotiko/ex_gram/blob/0.64.0/lib/ex_gram.ex#L5389)

This object represents a change of a reaction on a message performed by a user.

Check the [documentation of this model on Telegram Bot API](https://core.telegram.org/bots/api#messagereactionupdated)

- `chat`: The chat containing the message the user reacted to
- `message_id`: Unique identifier of the message inside the chat
- `date`: Date of the change in Unix time
- `old_reaction`: Previous list of reaction types that were set by the user
- `new_reaction`: New list of reaction types that have been set by the user
- `user (optional)`: Optional. The user that changed the reaction, if the user isn't anonymous
- `actor_chat (optional)`: Optional. The chat on behalf of which the reaction was changed, if the user is anonymous

# `t`

```elixir
@type t() :: %ExGram.Model.MessageReactionUpdated{
  actor_chat: ExGram.Model.Chat.t() | nil,
  chat: ExGram.Model.Chat.t(),
  date: integer(),
  message_id: integer(),
  new_reaction: [ExGram.Model.ReactionType.t()],
  old_reaction: [ExGram.Model.ReactionType.t()],
  user: ExGram.Model.User.t() | nil
}
```

# `decode_as`

---

*Consult [api-reference.md](api-reference.md) for complete listing*