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::{
  16     community::{Community, CommunitySafe},
  17     moderator::ModRemoveCommunity,
  18     person::{Person, PersonSafe},
  19   },
  20   traits::{ToSafe, ViewToVec},
  21   utils::{get_conn, limit_and_offset, DbPool},
  22 };
  23
  24 type ModRemoveCommunityTuple = (ModRemoveCommunity, Option<PersonSafe>, CommunitySafe);
  25
  26 impl ModRemoveCommunityView {
  27   pub async fn list(pool: &DbPool, params: ModlogListParams) -> Result<Vec<Self>, Error> {
  28     let conn = &mut get_conn(pool).await?;
  29     let admin_person_id_join = params.mod_person_id.unwrap_or(PersonId(-1));
  30     let show_mod_names = !params.hide_modlog_names;
  31     let show_mod_names_expr = show_mod_names.as_sql::<diesel::sql_types::Bool>();
  32
  33     let admin_names_join = mod_remove_community::mod_person_id
  34       .eq(person::id)
  35       .and(show_mod_names_expr.or(person::id.eq(admin_person_id_join)));
  36     let mut query = mod_remove_community::table
  37       .left_join(person::table.on(admin_names_join))
  38       .inner_join(community::table)
  39       .select((
  40         mod_remove_community::all_columns,
  41         Person::safe_columns_tuple().nullable(),
  42         Community::safe_columns_tuple(),
  43       ))
  44       .into_boxed();
  45
  46     if let Some(mod_person_id) = params.mod_person_id {
  47       query = query.filter(mod_remove_community::mod_person_id.eq(mod_person_id));
  48     };
  49
  50     let (limit, offset) = limit_and_offset(params.page, params.limit)?;
  51
  52     let res = query
  53       .limit(limit)
  54       .offset(offset)
  55       .order_by(mod_remove_community::when_.desc())
  56       .load::<ModRemoveCommunityTuple>(conn)
  57       .await?;
  58
  59     let results = Self::from_tuple_to_vec(res);
  60     Ok(results)
  61   }
  62 }
  63
  64 impl ViewToVec for ModRemoveCommunityView {
  65   type DbTuple = ModRemoveCommunityTuple;
  66   fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
  67     items
  68       .into_iter()
  69       .map(|a| Self {
  70         mod_remove_community: a.0,
  71         moderator: a.1,
  72         community: a.2,
  73       })
  74       .collect::<Vec<Self>>()
  75   }
  76 }