zed-industries/zed · error · anyhow::Error

tried to join channel call directly

Error message

tried to join channel call directly

What it means

join_room detects that the target room belongs to a channel; channel rooms cannot be joined directly by room ID — clients must join through the channel mechanism so channel membership and roles are enforced.

Source

Thrown at crates/collab/src/db/queries/rooms.rs:316

        connection: ConnectionId,
    ) -> Result<TransactionGuard<JoinRoom>> {
        self.room_transaction(room_id, |tx| async move {
            #[derive(Copy, Clone, Debug, EnumIter, DeriveColumn)]
            enum QueryChannelId {
                ChannelId,
            }

            let channel_id: Option<ChannelId> = room::Entity::find()
                .select_only()
                .column(room::Column::ChannelId)
                .filter(room::Column::Id.eq(room_id))
                .into_values::<_, QueryChannelId>()
                .one(&*tx)
                .await?
                .context("no such room")?;

            if channel_id.is_some() {
                Err(anyhow!("tried to join channel call directly"))?
            }

            let participant_index = self
                .get_next_participant_index_internal(room_id, &tx)
                .await?;

            let result = room_participant::Entity::update_many()
                .filter(
                    Condition::all()
                        .add(room_participant::Column::RoomId.eq(room_id))
                        .add(room_participant::Column::UserId.eq(user_id))
                        .add(room_participant::Column::AnsweringConnectionId.is_null()),
                )
                .set(room_participant::ActiveModel {
                    participant_index: ActiveValue::Set(Some(participant_index)),
                    answering_connection_id: ActiveValue::set(Some(connection.id as i32)),
                    answering_connection_server_id: ActiveValue::set(Some(ServerId(
                        connection.owner_id as i32,

View on GitHub (pinned to f4178619ac)

Solutions

1. Join via the channel (e.g. join_channel_buffer) instead of the raw room ID
2. For direct rooms or DMs, use the normal room join flow

When it happens

Trigger: Thrown at crates/collab/src/db/queries/rooms.rs:316 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of zed-industries/zed@f4178619ac (2026-08-20). Data as JSON: /api/errors/dd462a22c2acfd22. Report an issue: GitHub.