lemmy/crates/db_views/src/local_user_discussion_language_view.rs
Dessalines c9f1407429
Diesel 2.0.0 upgrade (#2452)
* Initial commit to bump diesel to 2.0.0-rc.0 and see what happens

* Add chrono feature from diesel

* db_schema crate is close to building?

* Upgrade diesel-derive-newtype

* Mostly modifying references to connections to be mutable ones; also used
new way to do migrations as suggested by the migration guide; a lot more
compiles now, though I can't figure out this tricky ToSql issue at the
moment

* Running clippy --fix

* Trying to fix drone clippy 1

* Fix clippy

* Upgrade clux-musl

* Trying to fix drone clippy 2

* Trying to fix drone clippy 3

* Trying to fix drone clippy 5

* Adding diesel table aliases, removing sql view hack. Fixes #2101

Co-authored-by: Steven Chu <stevenc1@gmail.com>
Co-authored-by: Nutomic <me@nutomic.com>
2022-09-26 14:09:32 +00:00

33 lines
997 B
Rust

use crate::structs::LocalUserDiscussionLanguageView;
use diesel::{result::Error, ExpressionMethods, PgConnection, QueryDsl, RunQueryDsl};
use lemmy_db_schema::{
newtypes::LocalUserId,
schema::{language, local_user, local_user_language},
source::{
language::Language,
local_user::{LocalUser, LocalUserSettings},
},
traits::ToSafeSettings,
};
type LocalUserDiscussionLanguageViewTuple = (LocalUserSettings, Language);
impl LocalUserDiscussionLanguageView {
pub fn read_languages(
conn: &mut PgConnection,
local_user_id: LocalUserId,
) -> Result<Vec<Language>, Error> {
let res = local_user_language::table
.inner_join(local_user::table)
.inner_join(language::table)
.select((
LocalUser::safe_settings_columns_tuple(),
language::all_columns,
))
.filter(local_user::id.eq(local_user_id))
.load::<LocalUserDiscussionLanguageViewTuple>(conn)?;
Ok(res.into_iter().map(|a| a.1).collect::<Vec<Language>>())
}
}