crates/db_views_moderator/src/mod_add_community_view.rs

   1 use crate::structs::ModAddCommunityView;
   2 use diesel::{result::Error, *};
   3 use lemmy_db_schema::{
   4   newtypes::{CommunityId, PersonId},
   5   schema::{community, mod_add_community, person, person_alias_1},
   6   source::{
   7     community::{Community, CommunitySafe},
   8     moderator::ModAddCommunity,
   9     person::{Person, PersonAlias1, PersonSafe, PersonSafeAlias1},
  10   },
  11   traits::{ToSafe, ViewToVec},
  12   utils::limit_and_offset,
  13 };
  14
  15 type ModAddCommunityViewTuple = (ModAddCommunity, PersonSafe, CommunitySafe, PersonSafeAlias1);
  16
  17 impl ModAddCommunityView {
  18   pub fn list(
  19     conn: &PgConnection,
  20     community_id: Option<CommunityId>,
  21     mod_person_id: Option<PersonId>,
  22     page: Option<i64>,
  23     limit: Option<i64>,
  24   ) -> Result<Vec<Self>, Error> {
  25     let mut query = mod_add_community::table
  26       .inner_join(person::table.on(mod_add_community::mod_person_id.eq(person::id)))
  27       .inner_join(community::table)
  28       .inner_join(
  29         person_alias_1::table.on(mod_add_community::other_person_id.eq(person_alias_1::id)),
  30       )
  31       .select((
  32         mod_add_community::all_columns,
  33         Person::safe_columns_tuple(),
  34         Community::safe_columns_tuple(),
  35         PersonAlias1::safe_columns_tuple(),
  36       ))
  37       .into_boxed();
  38
  39     if let Some(mod_person_id) = mod_person_id {
  40       query = query.filter(mod_add_community::mod_person_id.eq(mod_person_id));
  41     };
  42
  43     if let Some(community_id) = community_id {
  44       query = query.filter(mod_add_community::community_id.eq(community_id));
  45     };
  46
  47     let (limit, offset) = limit_and_offset(page, limit)?;
  48
  49     let res = query
  50       .limit(limit)
  51       .offset(offset)
  52       .order_by(mod_add_community::when_.desc())
  53       .load::<ModAddCommunityViewTuple>(conn)?;
  54
  55     Ok(Self::from_tuple_to_vec(res))
  56   }
  57 }
  58
  59 impl ViewToVec for ModAddCommunityView {
  60   type DbTuple = ModAddCommunityViewTuple;
  61   fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
  62     items
  63       .into_iter()
  64       .map(|a| Self {
  65         mod_add_community: a.0,
  66         moderator: a.1,
  67         community: a.2,
  68         modded_person: a.3,
  69       })
  70       .collect::<Vec<Self>>()
  71   }
  72 }