57 lines
1.7 KiB
Rust
57 lines
1.7 KiB
Rust
use diesel::{result::Error, *};
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use lemmy_db_queries::{ToSafe, ViewToVec};
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use lemmy_db_schema::{
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schema::{community, community_follower, user_},
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source::{
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community::{Community, CommunitySafe},
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user::{UserSafe, User_},
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},
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};
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use serde::Serialize;
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#[derive(Debug, Serialize, Clone)]
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pub struct CommunityFollowerView {
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pub community: CommunitySafe,
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pub follower: UserSafe,
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}
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type CommunityFollowerViewTuple = (CommunitySafe, UserSafe);
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impl CommunityFollowerView {
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pub fn for_community(conn: &PgConnection, community_id: i32) -> Result<Vec<Self>, Error> {
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let res = community_follower::table
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.inner_join(community::table)
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.inner_join(user_::table)
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.select((Community::safe_columns_tuple(), User_::safe_columns_tuple()))
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.filter(community_follower::community_id.eq(community_id))
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.order_by(community_follower::published)
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.load::<CommunityFollowerViewTuple>(conn)?;
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Ok(Self::from_tuple_to_vec(res))
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}
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pub fn for_user(conn: &PgConnection, user_id: i32) -> Result<Vec<Self>, Error> {
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let res = community_follower::table
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.inner_join(community::table)
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.inner_join(user_::table)
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.select((Community::safe_columns_tuple(), User_::safe_columns_tuple()))
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.filter(community_follower::user_id.eq(user_id))
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.order_by(community_follower::published)
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.load::<CommunityFollowerViewTuple>(conn)?;
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Ok(Self::from_tuple_to_vec(res))
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}
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}
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impl ViewToVec for CommunityFollowerView {
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type DbTuple = CommunityFollowerViewTuple;
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fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
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items
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.iter()
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.map(|a| Self {
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community: a.0.to_owned(),
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follower: a.1.to_owned(),
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})
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.collect::<Vec<Self>>()
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}
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}
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