crates/db_views_moderator/src/admin_purge_community_view.rs

   1 use crate::structs::{AdminPurgeCommunityView, ModlogListParams};
   2 use diesel::{
   3   result::Error,
   4   BoolExpressionMethods,
   5   ExpressionMethods,
   6   IntoSql,
   7   JoinOnDsl,
   8   NullableExpressionMethods,
   9   QueryDsl,
  10 };
  11 use diesel_async::RunQueryDsl;
  12 use lemmy_db_schema::{
  13   newtypes::PersonId,
  14   schema::{admin_purge_community, person},
  15   source::{moderator::AdminPurgeCommunity, person::Person},
  16   traits::JoinView,
  17   utils::{get_conn, limit_and_offset, DbPool},
  18 };
  19
  20 type AdminPurgeCommunityViewTuple = (AdminPurgeCommunity, Option<Person>);
  21
  22 impl AdminPurgeCommunityView {
  23   pub async fn list(pool: &DbPool, params: ModlogListParams) -> Result<Vec<Self>, Error> {
  24     let conn = &mut get_conn(pool).await?;
  25     let admin_person_id_join = params.mod_person_id.unwrap_or(PersonId(-1));
  26     let show_mod_names = !params.hide_modlog_names;
  27     let show_mod_names_expr = show_mod_names.as_sql::<diesel::sql_types::Bool>();
  28
  29     let admin_names_join = admin_purge_community::admin_person_id
  30       .eq(person::id)
  31       .and(show_mod_names_expr.or(person::id.eq(admin_person_id_join)));
  32
  33     let mut query = admin_purge_community::table
  34       .left_join(person::table.on(admin_names_join))
  35       .select((
  36         admin_purge_community::all_columns,
  37         person::all_columns.nullable(),
  38       ))
  39       .into_boxed();
  40
  41     if let Some(admin_person_id) = params.mod_person_id {
  42       query = query.filter(admin_purge_community::admin_person_id.eq(admin_person_id));
  43     };
  44
  45     let (limit, offset) = limit_and_offset(params.page, params.limit)?;
  46
  47     let res = query
  48       .limit(limit)
  49       .offset(offset)
  50       .order_by(admin_purge_community::when_.desc())
  51       .load::<AdminPurgeCommunityViewTuple>(conn)
  52       .await?;
  53
  54     let results = res.into_iter().map(Self::from_tuple).collect();
  55     Ok(results)
  56   }
  57 }
  58
  59 impl JoinView for AdminPurgeCommunityView {
  60   type JoinTuple = AdminPurgeCommunityViewTuple;
  61   fn from_tuple(a: Self::JoinTuple) -> Self {
  62     Self {
  63       admin_purge_community: a.0,
  64       admin: a.1,
  65     }
  66   }
  67 }