lemmy/crates/db_queries/src/source/category.rs

54 lines
1.4 KiB
Rust

use crate::Crud;
use diesel::{dsl::*, result::Error, *};
use lemmy_db_schema::{schema::category::dsl::*, source::category::*};
impl Crud<CategoryForm> for Category {
fn read(conn: &PgConnection, category_id: i32) -> Result<Self, Error> {
category.find(category_id).first::<Self>(conn)
}
fn create(conn: &PgConnection, new_category: &CategoryForm) -> Result<Self, Error> {
insert_into(category)
.values(new_category)
.get_result::<Self>(conn)
}
fn update(
conn: &PgConnection,
category_id: i32,
new_category: &CategoryForm,
) -> Result<Self, Error> {
diesel::update(category.find(category_id))
.set(new_category)
.get_result::<Self>(conn)
}
}
pub trait Category_ {
fn list_all(conn: &PgConnection) -> Result<Vec<Category>, Error>;
}
impl Category_ for Category {
fn list_all(conn: &PgConnection) -> Result<Vec<Category>, Error> {
category.load::<Self>(conn)
}
}
#[cfg(test)]
mod tests {
use crate::{establish_unpooled_connection, source::category::Category_};
use lemmy_db_schema::source::category::Category;
#[test]
fn test_crud() {
let conn = establish_unpooled_connection();
let categories = Category::list_all(&conn).unwrap();
let expected_first_category = Category {
id: 1,
name: "Discussion".into(),
};
assert_eq!(expected_first_category, categories[0]);
}
}