lemmy/crates/db_views_actor/src/person_block_view.rs

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Rust
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use crate::structs::PersonBlockView;
use diesel::{result::Error, ExpressionMethods, JoinOnDsl, QueryDsl};
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use diesel_async::RunQueryDsl;
use lemmy_db_schema::{
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newtypes::PersonId,
schema::{person, person_block},
source::person::Person,
traits::JoinView,
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utils::{get_conn, DbPool},
};
type PersonBlockViewTuple = (Person, Person);
impl PersonBlockView {
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pub async fn for_person(pool: &DbPool, person_id: PersonId) -> Result<Vec<Self>, Error> {
let conn = &mut get_conn(pool).await?;
let target_person_alias = diesel::alias!(person as person1);
let res = person_block::table
.inner_join(person::table)
.inner_join(
target_person_alias.on(person_block::target_id.eq(target_person_alias.field(person::id))),
)
.select((
person::all_columns,
target_person_alias.fields(person::all_columns),
))
.filter(person_block::person_id.eq(person_id))
.filter(target_person_alias.field(person::deleted).eq(false))
.order_by(person_block::published)
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.load::<PersonBlockViewTuple>(conn)
.await?;
Ok(res.into_iter().map(Self::from_tuple).collect())
}
}
impl JoinView for PersonBlockView {
type JoinTuple = PersonBlockViewTuple;
fn from_tuple(a: Self::JoinTuple) -> Self {
Self {
person: a.0,
target: a.1,
}
}
}