lemmy/crates/db_views_moderator/src/mod_ban_view.rs

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use diesel::{result::Error, *};
use lemmy_db_queries::{limit_and_offset, ToSafe, ViewToVec};
use lemmy_db_schema::{
schema::{mod_ban, user_, user_alias_1},
source::{
moderator::ModBan,
user::{UserAlias1, UserSafe, UserSafeAlias1, User_},
},
};
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use serde::Serialize;
#[derive(Debug, Serialize, Clone)]
pub struct ModBanView {
pub mod_ban: ModBan,
pub moderator: UserSafe,
pub banned_user: UserSafeAlias1,
}
type ModBanViewTuple = (ModBan, UserSafe, UserSafeAlias1);
impl ModBanView {
pub fn list(
conn: &PgConnection,
mod_user_id: Option<i32>,
page: Option<i64>,
limit: Option<i64>,
) -> Result<Vec<Self>, Error> {
let mut query = mod_ban::table
.inner_join(user_::table.on(mod_ban::mod_user_id.eq(user_::id)))
.inner_join(user_alias_1::table.on(mod_ban::other_user_id.eq(user_alias_1::id)))
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.select((
mod_ban::all_columns,
User_::safe_columns_tuple(),
UserAlias1::safe_columns_tuple(),
))
.into_boxed();
if let Some(mod_user_id) = mod_user_id {
query = query.filter(mod_ban::mod_user_id.eq(mod_user_id));
};
let (limit, offset) = limit_and_offset(page, limit);
let res = query
.limit(limit)
.offset(offset)
.order_by(mod_ban::when_.desc())
.load::<ModBanViewTuple>(conn)?;
Ok(Self::from_tuple_to_vec(res))
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}
}
impl ViewToVec for ModBanView {
type DbTuple = ModBanViewTuple;
fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
items
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.iter()
.map(|a| Self {
mod_ban: a.0.to_owned(),
moderator: a.1.to_owned(),
banned_user: a.2.to_owned(),
})
.collect::<Vec<Self>>()
}
}