lemmy/crates/db_views/src/local_image_view.rs

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Rust
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use crate::structs::LocalImageView;
use diesel::{result::Error, ExpressionMethods, JoinOnDsl, QueryDsl};
use diesel_async::RunQueryDsl;
use lemmy_db_schema::{
newtypes::LocalUserId,
schema::{local_image, local_user, person},
utils::{get_conn, limit_and_offset, DbPool},
};
impl LocalImageView {
async fn get_all_helper(
pool: &mut DbPool<'_>,
user_id: Option<LocalUserId>,
page: Option<i64>,
limit: Option<i64>,
ignore_page_limits: bool,
) -> Result<Vec<Self>, Error> {
let conn = &mut get_conn(pool).await?;
let mut query = local_image::table
.inner_join(local_user::table)
.inner_join(person::table.on(local_user::person_id.eq(person::id)))
.select((local_image::all_columns, person::all_columns))
.order_by(local_image::published.desc())
.into_boxed();
if let Some(user_id) = user_id {
query = query.filter(local_image::local_user_id.eq(user_id))
}
if !ignore_page_limits {
let (limit, offset) = limit_and_offset(page, limit)?;
query = query.limit(limit).offset(offset);
}
query.load::<LocalImageView>(conn).await
}
pub async fn get_all_paged_by_local_user_id(
pool: &mut DbPool<'_>,
user_id: LocalUserId,
page: Option<i64>,
limit: Option<i64>,
) -> Result<Vec<Self>, Error> {
Self::get_all_helper(pool, Some(user_id), page, limit, false).await
}
pub async fn get_all_by_local_user_id(
pool: &mut DbPool<'_>,
user_id: LocalUserId,
) -> Result<Vec<Self>, Error> {
Self::get_all_helper(pool, Some(user_id), None, None, true).await
}
pub async fn get_all(
pool: &mut DbPool<'_>,
page: Option<i64>,
limit: Option<i64>,
) -> Result<Vec<Self>, Error> {
Self::get_all_helper(pool, None, page, limit, false).await
}
}