crates/db_views_moderator/src/mod_add_community_view.rs

   1 use diesel::{result::Error, *};
   2 use lemmy_db_queries::{limit_and_offset, ToSafe, ViewToVec};
   3 use lemmy_db_schema::{
   4   schema::{community, mod_add_community, person, person_alias_1},
   5   source::{
   6     community::{Community, CommunitySafe},
   7     moderator::ModAddCommunity,
   8     person::{Person, PersonAlias1, PersonSafe, PersonSafeAlias1},
   9   },
  10   CommunityId,
  11   PersonId,
  12 };
  13 use serde::Serialize;
  14
  15 #[derive(Debug, Serialize, Clone)]
  16 pub struct ModAddCommunityView {
  17   pub mod_add_community: ModAddCommunity,
  18   pub moderator: PersonSafe,
  19   pub community: CommunitySafe,
  20   pub modded_person: PersonSafeAlias1,
  21 }
  22
  23 type ModAddCommunityViewTuple = (ModAddCommunity, PersonSafe, CommunitySafe, PersonSafeAlias1);
  24
  25 impl ModAddCommunityView {
  26   pub fn list(
  27     conn: &PgConnection,
  28     community_id: Option<CommunityId>,
  29     mod_person_id: Option<PersonId>,
  30     page: Option<i64>,
  31     limit: Option<i64>,
  32   ) -> Result<Vec<Self>, Error> {
  33     let mut query = mod_add_community::table
  34       .inner_join(person::table.on(mod_add_community::mod_person_id.eq(person::id)))
  35       .inner_join(community::table)
  36       .inner_join(
  37         person_alias_1::table.on(mod_add_community::other_person_id.eq(person_alias_1::id)),
  38       )
  39       .select((
  40         mod_add_community::all_columns,
  41         Person::safe_columns_tuple(),
  42         Community::safe_columns_tuple(),
  43         PersonAlias1::safe_columns_tuple(),
  44       ))
  45       .into_boxed();
  46
  47     if let Some(mod_person_id) = mod_person_id {
  48       query = query.filter(mod_add_community::mod_person_id.eq(mod_person_id));
  49     };
  50
  51     if let Some(community_id) = community_id {
  52       query = query.filter(mod_add_community::community_id.eq(community_id));
  53     };
  54
  55     let (limit, offset) = limit_and_offset(page, limit);
  56
  57     let res = query
  58       .limit(limit)
  59       .offset(offset)
  60       .order_by(mod_add_community::when_.desc())
  61       .load::<ModAddCommunityViewTuple>(conn)?;
  62
  63     Ok(Self::from_tuple_to_vec(res))
  64   }
  65 }
  66
  67 impl ViewToVec for ModAddCommunityView {
  68   type DbTuple = ModAddCommunityViewTuple;
  69   fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
  70     items
  71       .iter()
  72       .map(|a| Self {
  73         mod_add_community: a.0.to_owned(),
  74         moderator: a.1.to_owned(),
  75         community: a.2.to_owned(),
  76         modded_person: a.3.to_owned(),
  77       })
  78       .collect::<Vec<Self>>()
  79   }
  80 }