crates/db_views_moderator/src/mod_add_community_view.rs

   1 use crate::structs::{ModAddCommunityView, ModlogListParams};
   2 use diesel::{result::Error, *};
   3 use lemmy_db_schema::{
   4   newtypes::PersonId,
   5   schema::{community, mod_add_community, person},
   6   source::{
   7     community::{Community, CommunitySafe},
   8     moderator::ModAddCommunity,
   9     person::{Person, PersonSafe},
  10   },
  11   traits::{ToSafe, ViewToVec},
  12   utils::limit_and_offset,
  13 };
  14
  15 type ModAddCommunityViewTuple = (
  16   ModAddCommunity,
  17   Option<PersonSafe>,
  18   CommunitySafe,
  19   PersonSafe,
  20 );
  21
  22 impl ModAddCommunityView {
  23   pub fn list(conn: &mut PgConnection, params: ModlogListParams) -> Result<Vec<Self>, Error> {
  24     let person_alias_1 = diesel::alias!(person as person1);
  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_add_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_add_community::table
  33       .left_join(person::table.on(admin_names_join))
  34       .inner_join(community::table)
  35       .inner_join(
  36         person_alias_1.on(mod_add_community::other_person_id.eq(person_alias_1.field(person::id))),
  37       )
  38       .select((
  39         mod_add_community::all_columns,
  40         Person::safe_columns_tuple().nullable(),
  41         Community::safe_columns_tuple(),
  42         person_alias_1.fields(Person::safe_columns_tuple()),
  43       ))
  44       .into_boxed();
  45
  46     if let Some(mod_person_id) = params.mod_person_id {
  47       query = query.filter(mod_add_community::mod_person_id.eq(mod_person_id));
  48     };
  49
  50     if let Some(community_id) = params.community_id {
  51       query = query.filter(mod_add_community::community_id.eq(community_id));
  52     };
  53
  54     if let Some(other_person_id) = params.other_person_id {
  55       query = query.filter(person_alias_1.field(person::id).eq(other_person_id));
  56     };
  57
  58     let (limit, offset) = limit_and_offset(params.page, params.limit)?;
  59
  60     let res = query
  61       .limit(limit)
  62       .offset(offset)
  63       .order_by(mod_add_community::when_.desc())
  64       .load::<ModAddCommunityViewTuple>(conn)?;
  65
  66     let results = Self::from_tuple_to_vec(res);
  67     Ok(results)
  68   }
  69 }
  70
  71 impl ViewToVec for ModAddCommunityView {
  72   type DbTuple = ModAddCommunityViewTuple;
  73   fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
  74     items
  75       .into_iter()
  76       .map(|a| Self {
  77         mod_add_community: a.0,
  78         moderator: a.1,
  79         community: a.2,
  80         modded_person: a.3,
  81       })
  82       .collect::<Vec<Self>>()
  83   }
  84 }