lemmy/crates/db_schema/src/impls/language.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

55 lines
1.5 KiB
Rust

use crate::{newtypes::LanguageId, source::language::Language};
use diesel::{result::Error, PgConnection, RunQueryDsl, *};
impl Language {
pub fn read_all(conn: &mut PgConnection) -> Result<Vec<Language>, Error> {
use crate::schema::language::dsl::*;
language.load::<Self>(conn)
}
pub fn read_from_id(conn: &mut PgConnection, id_: LanguageId) -> Result<Language, Error> {
use crate::schema::language::dsl::*;
language.filter(id.eq(id_)).first::<Self>(conn)
}
pub fn read_id_from_code(conn: &mut PgConnection, code_: &str) -> Result<LanguageId, Error> {
use crate::schema::language::dsl::*;
Ok(language.filter(code.eq(code_)).first::<Self>(conn)?.id)
}
pub fn read_id_from_code_opt(
conn: &mut PgConnection,
code_: Option<&str>,
) -> Result<Option<LanguageId>, Error> {
if let Some(code_) = code_ {
Ok(Some(Language::read_id_from_code(conn, code_)?))
} else {
Ok(None)
}
}
pub fn read_undetermined(conn: &mut PgConnection) -> Result<LanguageId, Error> {
use crate::schema::language::dsl::*;
Ok(language.filter(code.eq("und")).first::<Self>(conn)?.id)
}
}
#[cfg(test)]
mod tests {
use crate::{source::language::Language, utils::establish_unpooled_connection};
use serial_test::serial;
#[test]
#[serial]
fn test_languages() {
let conn = &mut establish_unpooled_connection();
let all = Language::read_all(conn).unwrap();
assert_eq!(184, all.len());
assert_eq!("ak", all[5].code);
assert_eq!("lv", all[99].code);
assert_eq!("yi", all[179].code);
}
}