lemmy/crates/db_views_moderator/src/mod_add_view.rs

75 lines
2.2 KiB
Rust

use crate::structs::{ModAddView, ModlogListParams};
use diesel::{
result::Error,
BoolExpressionMethods,
ExpressionMethods,
IntoSql,
JoinOnDsl,
NullableExpressionMethods,
QueryDsl,
};
use diesel_async::RunQueryDsl;
use lemmy_db_schema::{
newtypes::PersonId,
schema::{mod_add, person},
source::{moderator::ModAdd, person::Person},
traits::JoinView,
utils::{get_conn, limit_and_offset, DbPool},
};
type ModAddViewTuple = (ModAdd, Option<Person>, Person);
impl ModAddView {
pub async fn list(pool: &DbPool, params: ModlogListParams) -> Result<Vec<Self>, Error> {
let conn = &mut get_conn(pool).await?;
let person_alias_1 = diesel::alias!(person as person1);
let admin_person_id_join = params.mod_person_id.unwrap_or(PersonId(-1));
let show_mod_names = !params.hide_modlog_names;
let show_mod_names_expr = show_mod_names.as_sql::<diesel::sql_types::Bool>();
let admin_names_join = mod_add::mod_person_id
.eq(person::id)
.and(show_mod_names_expr.or(person::id.eq(admin_person_id_join)));
let mut query = mod_add::table
.left_join(person::table.on(admin_names_join))
.inner_join(person_alias_1.on(mod_add::other_person_id.eq(person_alias_1.field(person::id))))
.select((
mod_add::all_columns,
person::all_columns.nullable(),
person_alias_1.fields(person::all_columns),
))
.into_boxed();
if let Some(mod_person_id) = params.mod_person_id {
query = query.filter(mod_add::mod_person_id.eq(mod_person_id));
};
if let Some(other_person_id) = params.other_person_id {
query = query.filter(person_alias_1.field(person::id).eq(other_person_id));
};
let (limit, offset) = limit_and_offset(params.page, params.limit)?;
let res = query
.limit(limit)
.offset(offset)
.order_by(mod_add::when_.desc())
.load::<ModAddViewTuple>(conn)
.await?;
let results = res.into_iter().map(Self::from_tuple).collect();
Ok(results)
}
}
impl JoinView for ModAddView {
type JoinTuple = ModAddViewTuple;
fn from_tuple(a: Self::JoinTuple) -> Self {
Self {
mod_add: a.0,
moderator: a.1,
modded_person: a.2,
}
}
}