Method activity

backend/src/graphql/topic.rs:183–212

(
        &self,
        ctx: &Context<'_>,
        after: Option<String>,
        before: Option<String>,
        first: Option<i32>,
        last: Option<i32>,
    )

#[Object]
impl Topic {
    async fn activity(
        &self,
        ctx: &Context<'_>,
        after: Option<String>,
        before: Option<String>,
        first: Option<i32>,
        last: Option<i32>,
    ) -> Result<ActivityLineItemConnection> {
        let topic_id = Some(self.0.key.0.to_owned());
        let store = ctx.data_unchecked::<Store>();

        let activity = store
            .activity(RepoId::wiki(), &topic_id.to_owned(), first.unwrap_or(3))
            .await?;

        let mut results = vec![];
        for change in activity {
            let actor = store.user_loader.load_one(change.actor_id()).await?;
            let actor_name = actor
                .map(|user| user.name)
                .unwrap_or_else(|| "[missing user]".to_owned());

            results.push(ActivityLineItem {
                created_at: change.date(),
                description: change.markdown(Locale::EN, &actor_name, topic_id.as_ref()),
            });
        }

        relay::connection(after, before, first, last, results).await
    }

    async fn children(
        &self,