crates/db_views_moderator/src/mod_hide_community_view.rs

   1 use crate::structs::{ModHideCommunityView, ModlogListParams};
   2 use diesel::{result::Error, *};
   3 use lemmy_db_schema::{
   4   newtypes::PersonId,
   5   schema::{community, mod_hide_community, person},
   6   source::{
   7     community::{Community, CommunitySafe},
   8     moderator::ModHideCommunity,
   9     person::{Person, PersonSafe},
  10   },
  11   traits::{ToSafe, ViewToVec},
  12   utils::limit_and_offset,
  13 };
  14
  15 type ModHideCommunityViewTuple = (ModHideCommunity, Option<PersonSafe>, CommunitySafe);
  16
  17 impl ModHideCommunityView {
  18   // Pass in mod_id as admin_id because only admins can do this action
  19   pub fn list(conn: &mut PgConnection, params: ModlogListParams) -> Result<Vec<Self>, Error> {
  20     let admin_person_id_join = params.mod_person_id.unwrap_or(PersonId(-1));
  21     let show_mod_names = !params.hide_modlog_names;
  22     let show_mod_names_expr = show_mod_names.as_sql::<diesel::sql_types::Bool>();
  23
  24     let admin_names_join = mod_hide_community::mod_person_id
  25       .eq(person::id)
  26       .and(show_mod_names_expr.or(person::id.eq(admin_person_id_join)));
  27     let mut query = mod_hide_community::table
  28       .left_join(person::table.on(admin_names_join))
  29       .inner_join(community::table.on(mod_hide_community::community_id.eq(community::id)))
  30       .select((
  31         mod_hide_community::all_columns,
  32         Person::safe_columns_tuple().nullable(),
  33         Community::safe_columns_tuple(),
  34       ))
  35       .into_boxed();
  36
  37     if let Some(community_id) = params.community_id {
  38       query = query.filter(mod_hide_community::community_id.eq(community_id));
  39     };
  40
  41     if let Some(admin_id) = params.mod_person_id {
  42       query = query.filter(mod_hide_community::mod_person_id.eq(admin_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(mod_hide_community::when_.desc())
  51       .load::<ModHideCommunityViewTuple>(conn)?;
  52
  53     let results = Self::from_tuple_to_vec(res);
  54     Ok(results)
  55   }
  56 }
  57
  58 impl ViewToVec for ModHideCommunityView {
  59   type DbTuple = ModHideCommunityViewTuple;
  60   fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
  61     items
  62       .into_iter()
  63       .map(|a| Self {
  64         mod_hide_community: a.0,
  65         admin: a.1,
  66         community: a.2,
  67       })
  68       .collect::<Vec<Self>>()
  69   }
  70 }