crates/db_views_actor/src/person_block_view.rs

   1 use crate::structs::PersonBlockView;
   2 use diesel::{result::Error, ExpressionMethods, JoinOnDsl, QueryDsl};
   3 use diesel_async::RunQueryDsl;
   4 use lemmy_db_schema::{
   5   newtypes::PersonId,
   6   schema::{person, person_block},
   7   source::person::{Person, PersonSafe},
   8   traits::{ToSafe, ViewToVec},
   9   utils::{get_conn, DbPool},
  10 };
  11
  12 type PersonBlockViewTuple = (PersonSafe, PersonSafe);
  13
  14 impl PersonBlockView {
  15   pub async fn for_person(pool: &DbPool, person_id: PersonId) -> Result<Vec<Self>, Error> {
  16     let conn = &mut get_conn(pool).await?;
  17     let target_person_alias = diesel::alias!(person as person1);
  18
  19     let res = person_block::table
  20       .inner_join(person::table)
  21       .inner_join(
  22         target_person_alias.on(person_block::target_id.eq(target_person_alias.field(person::id))),
  23       )
  24       .select((
  25         Person::safe_columns_tuple(),
  26         target_person_alias.fields(Person::safe_columns_tuple()),
  27       ))
  28       .filter(person_block::person_id.eq(person_id))
  29       .filter(target_person_alias.field(person::deleted).eq(false))
  30       .order_by(person_block::published)
  31       .load::<PersonBlockViewTuple>(conn)
  32       .await?;
  33
  34     Ok(Self::from_tuple_to_vec(res))
  35   }
  36 }
  37
  38 impl ViewToVec for PersonBlockView {
  39   type DbTuple = PersonBlockViewTuple;
  40   fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
  41     items
  42       .into_iter()
  43       .map(|a| Self {
  44         person: a.0,
  45         target: a.1,
  46       })
  47       .collect::<Vec<Self>>()
  48   }
  49 }