crates/db_views_moderator/src/mod_remove_community_view.rs

   1 use crate::structs::{ModRemoveCommunityView, 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::{community, mod_remove_community, person},
  15   source::{community::Community, moderator::ModRemoveCommunity, person::Person},
  16   traits::JoinView,
  17   utils::{get_conn, limit_and_offset, DbPool},
  18 };
  19
  20 type ModRemoveCommunityTuple = (ModRemoveCommunity, Option<Person>, Community);
  21
  22 impl ModRemoveCommunityView {
  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 = mod_remove_community::mod_person_id
  30       .eq(person::id)
  31       .and(show_mod_names_expr.or(person::id.eq(admin_person_id_join)));
  32     let mut query = mod_remove_community::table
  33       .left_join(person::table.on(admin_names_join))
  34       .inner_join(community::table)
  35       .select((
  36         mod_remove_community::all_columns,
  37         person::all_columns.nullable(),
  38         community::all_columns,
  39       ))
  40       .into_boxed();
  41
  42     if let Some(mod_person_id) = params.mod_person_id {
  43       query = query.filter(mod_remove_community::mod_person_id.eq(mod_person_id));
  44     };
  45
  46     let (limit, offset) = limit_and_offset(params.page, params.limit)?;
  47
  48     let res = query
  49       .limit(limit)
  50       .offset(offset)
  51       .order_by(mod_remove_community::when_.desc())
  52       .load::<ModRemoveCommunityTuple>(conn)
  53       .await?;
  54
  55     let results = res.into_iter().map(Self::from_tuple).collect();
  56     Ok(results)
  57   }
  58 }
  59
  60 impl JoinView for ModRemoveCommunityView {
  61   type JoinTuple = ModRemoveCommunityTuple;
  62   fn from_tuple(a: Self::JoinTuple) -> Self {
  63     Self {
  64       mod_remove_community: a.0,
  65       moderator: a.1,
  66       community: a.2,
  67     }
  68   }
  69 }