577 lines
17 KiB
Rust
577 lines
17 KiB
Rust
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use crate::{
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aggregates::post_aggregates::PostAggregates,
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community::{Community, CommunityFollower, CommunitySafe, CommunityUserBan},
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functions::hot_rank,
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fuzzy_search,
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limit_and_offset,
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post::{Post, PostRead, PostSaved},
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schema::{
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community,
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community_follower,
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community_user_ban,
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post,
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post_aggregates,
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post_like,
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post_read,
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post_saved,
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user_,
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},
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user::{UserSafe, User_},
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ListingType,
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MaybeOptional,
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SortType,
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ToSafe,
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};
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use diesel::{result::Error, *};
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use serde::Serialize;
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#[derive(Debug, Serialize, Clone)]
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pub struct PostView {
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pub post: Post,
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pub creator: UserSafe,
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pub community: CommunitySafe,
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pub counts: PostAggregates,
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pub subscribed: bool, // Left join to CommunityFollower
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pub banned_from_community: bool, // Left Join to CommunityUserBan
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pub saved: bool, // Left join to PostSaved
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pub read: bool, // Left join to PostRead
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pub my_vote: Option<i16>, // Left join to PostLike
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}
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type OutputTuple = (
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Post,
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UserSafe,
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CommunitySafe,
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PostAggregates,
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Option<CommunityFollower>,
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Option<CommunityUserBan>,
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Option<PostSaved>,
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Option<PostRead>,
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Option<i16>,
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);
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impl PostView {
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pub fn read(conn: &PgConnection, post_id: i32, my_user_id: Option<i32>) -> Result<Self, Error> {
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// The left join below will return None in this case
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let user_id_join = my_user_id.unwrap_or(-1);
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let (post, creator, community, counts, follower, banned_from_community, saved, read, my_vote) =
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post::table
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.find(post_id)
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.inner_join(user_::table)
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.inner_join(community::table)
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.inner_join(post_aggregates::table)
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.left_join(
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community_follower::table.on(
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post::community_id
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.eq(community_follower::community_id)
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.and(community_follower::user_id.eq(user_id_join)),
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),
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)
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.left_join(
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community_user_ban::table.on(
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post::community_id
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.eq(community_user_ban::community_id)
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.and(community_user_ban::user_id.eq(user_id_join)),
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),
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)
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.left_join(
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post_saved::table.on(
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post::id
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.eq(post_saved::post_id)
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.and(post_saved::user_id.eq(user_id_join)),
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),
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)
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.left_join(
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post_read::table.on(
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post::id
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.eq(post_read::post_id)
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.and(post_read::user_id.eq(user_id_join)),
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),
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)
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.left_join(
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post_like::table.on(
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post::id
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.eq(post_like::post_id)
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.and(post_like::user_id.eq(user_id_join)),
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),
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)
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.select((
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post::all_columns,
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User_::safe_columns_tuple(),
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Community::safe_columns_tuple(),
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post_aggregates::all_columns,
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community_follower::all_columns.nullable(),
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community_user_ban::all_columns.nullable(),
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post_saved::all_columns.nullable(),
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post_read::all_columns.nullable(),
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post_like::score.nullable(),
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))
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.first::<OutputTuple>(conn)?;
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Ok(PostView {
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post,
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creator,
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community,
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counts,
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subscribed: follower.is_some(),
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banned_from_community: banned_from_community.is_some(),
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saved: saved.is_some(),
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read: read.is_some(),
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my_vote,
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})
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}
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}
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mod join_types {
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use crate::schema::{
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community,
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community_follower,
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community_user_ban,
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post,
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post_aggregates,
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post_like,
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post_read,
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post_saved,
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user_,
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};
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use diesel::{
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pg::Pg,
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query_builder::BoxedSelectStatement,
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query_source::joins::{Inner, Join, JoinOn, LeftOuter},
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sql_types::*,
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};
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/// TODO awful, but necessary because of the boxed join
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pub(super) type BoxedPostJoin<'a> = BoxedSelectStatement<
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'a,
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(
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(
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Integer,
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Text,
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Nullable<Text>,
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Nullable<Text>,
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Integer,
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Integer,
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Bool,
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Bool,
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Timestamp,
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Nullable<Timestamp>,
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Bool,
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Bool,
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Bool,
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Nullable<Text>,
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Nullable<Text>,
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Nullable<Text>,
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Nullable<Text>,
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Text,
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Bool,
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),
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(
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Integer,
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Text,
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Nullable<Text>,
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Nullable<Text>,
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Bool,
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Bool,
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Timestamp,
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Nullable<Timestamp>,
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Nullable<Text>,
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Text,
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Nullable<Text>,
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Bool,
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Nullable<Text>,
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Bool,
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),
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(
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Integer,
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Text,
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Text,
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Nullable<Text>,
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Integer,
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Integer,
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Bool,
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Timestamp,
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Nullable<Timestamp>,
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Bool,
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Bool,
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Text,
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Bool,
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Nullable<Text>,
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Nullable<Text>,
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),
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(Integer, Integer, BigInt, BigInt, BigInt, BigInt, Timestamp),
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Nullable<(Integer, Integer, Integer, Timestamp, Nullable<Bool>)>,
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Nullable<(Integer, Integer, Integer, Timestamp)>,
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Nullable<(Integer, Integer, Integer, Timestamp)>,
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Nullable<(Integer, Integer, Integer, Timestamp)>,
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Nullable<SmallInt>,
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),
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JoinOn<
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Join<
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JoinOn<
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Join<
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JoinOn<
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Join<
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JoinOn<
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Join<
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JoinOn<
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Join<
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JoinOn<
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Join<
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JoinOn<
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Join<
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JoinOn<
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Join<post::table, user_::table, Inner>,
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diesel::expression::operators::Eq<
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diesel::expression::nullable::Nullable<
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post::columns::creator_id,
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>,
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diesel::expression::nullable::Nullable<user_::columns::id>,
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>,
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>,
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community::table,
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Inner,
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>,
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diesel::expression::operators::Eq<
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diesel::expression::nullable::Nullable<post::columns::community_id>,
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diesel::expression::nullable::Nullable<community::columns::id>,
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>,
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>,
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post_aggregates::table,
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Inner,
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>,
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diesel::expression::operators::Eq<
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diesel::expression::nullable::Nullable<
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post_aggregates::columns::post_id,
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>,
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diesel::expression::nullable::Nullable<post::columns::id>,
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>,
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>,
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community_follower::table,
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LeftOuter,
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>,
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diesel::expression::operators::And<
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diesel::expression::operators::Eq<
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post::columns::community_id,
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community_follower::columns::community_id,
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>,
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diesel::expression::operators::Eq<
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community_follower::columns::user_id,
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diesel::expression::bound::Bound<diesel::sql_types::Integer, i32>,
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>,
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>,
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>,
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community_user_ban::table,
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LeftOuter,
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>,
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diesel::expression::operators::And<
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diesel::expression::operators::Eq<
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post::columns::community_id,
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community_user_ban::columns::community_id,
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>,
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diesel::expression::operators::Eq<
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community_user_ban::columns::user_id,
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diesel::expression::bound::Bound<diesel::sql_types::Integer, i32>,
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>,
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>,
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>,
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post_saved::table,
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LeftOuter,
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>,
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diesel::expression::operators::And<
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diesel::expression::operators::Eq<post::columns::id, post_saved::columns::post_id>,
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diesel::expression::operators::Eq<
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post_saved::columns::user_id,
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diesel::expression::bound::Bound<diesel::sql_types::Integer, i32>,
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>,
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>,
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>,
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post_read::table,
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LeftOuter,
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>,
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diesel::expression::operators::And<
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diesel::expression::operators::Eq<post::columns::id, post_read::columns::post_id>,
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diesel::expression::operators::Eq<
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post_read::columns::user_id,
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diesel::expression::bound::Bound<diesel::sql_types::Integer, i32>,
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>,
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>,
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>,
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post_like::table,
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LeftOuter,
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>,
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diesel::expression::operators::And<
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diesel::expression::operators::Eq<post::columns::id, post_like::columns::post_id>,
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diesel::expression::operators::Eq<
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post_like::columns::user_id,
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diesel::expression::bound::Bound<diesel::sql_types::Integer, i32>,
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>,
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>,
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>,
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Pg,
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>;
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}
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pub struct PostQueryBuilder<'a> {
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conn: &'a PgConnection,
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query: join_types::BoxedPostJoin<'a>,
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listing_type: &'a ListingType,
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sort: &'a SortType,
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for_creator_id: Option<i32>,
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for_community_id: Option<i32>,
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for_community_name: Option<String>,
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search_term: Option<String>,
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url_search: Option<String>,
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show_nsfw: bool,
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saved_only: bool,
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unread_only: bool,
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page: Option<i64>,
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limit: Option<i64>,
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}
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|
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impl<'a> PostQueryBuilder<'a> {
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pub fn create(conn: &'a PgConnection, my_user_id: Option<i32>) -> Self {
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// The left join below will return None in this case
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let user_id_join = my_user_id.unwrap_or(-1);
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|
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let query = post::table
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.inner_join(user_::table)
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.inner_join(community::table)
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.inner_join(post_aggregates::table)
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.left_join(
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community_follower::table.on(
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post::community_id
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.eq(community_follower::community_id)
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.and(community_follower::user_id.eq(user_id_join)),
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),
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)
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.left_join(
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community_user_ban::table.on(
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post::community_id
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.eq(community_user_ban::community_id)
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.and(community_user_ban::user_id.eq(user_id_join)),
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),
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)
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.left_join(
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post_saved::table.on(
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post::id
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.eq(post_saved::post_id)
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|
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.and(post_saved::user_id.eq(user_id_join)),
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),
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)
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.left_join(
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post_read::table.on(
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post::id
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.eq(post_read::post_id)
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|
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.and(post_read::user_id.eq(user_id_join)),
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),
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)
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.left_join(
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post_like::table.on(
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post::id
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|
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.eq(post_like::post_id)
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|
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.and(post_like::user_id.eq(user_id_join)),
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|
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),
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)
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|
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.select((
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|
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post::all_columns,
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||
|
|
User_::safe_columns_tuple(),
|
||
|
|
Community::safe_columns_tuple(),
|
||
|
|
post_aggregates::all_columns,
|
||
|
|
community_follower::all_columns.nullable(),
|
||
|
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community_user_ban::all_columns.nullable(),
|
||
|
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post_saved::all_columns.nullable(),
|
||
|
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post_read::all_columns.nullable(),
|
||
|
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post_like::score.nullable(),
|
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))
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.into_boxed();
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|
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|
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|
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PostQueryBuilder {
|
||
|
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conn,
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|
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query,
|
||
|
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listing_type: &ListingType::All,
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||
|
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sort: &SortType::Hot,
|
||
|
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for_creator_id: None,
|
||
|
|
for_community_id: None,
|
||
|
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for_community_name: None,
|
||
|
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search_term: None,
|
||
|
|
url_search: None,
|
||
|
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show_nsfw: true,
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|
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saved_only: false,
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|
|
unread_only: false,
|
||
|
|
page: None,
|
||
|
|
limit: None,
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn listing_type(mut self, listing_type: &'a ListingType) -> Self {
|
||
|
|
self.listing_type = listing_type;
|
||
|
|
self
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn sort(mut self, sort: &'a SortType) -> Self {
|
||
|
|
self.sort = sort;
|
||
|
|
self
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn for_community_id<T: MaybeOptional<i32>>(mut self, for_community_id: T) -> Self {
|
||
|
|
self.for_community_id = for_community_id.get_optional();
|
||
|
|
self
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn for_community_name<T: MaybeOptional<String>>(mut self, for_community_name: T) -> Self {
|
||
|
|
self.for_community_name = for_community_name.get_optional();
|
||
|
|
self
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn for_creator_id<T: MaybeOptional<i32>>(mut self, for_creator_id: T) -> Self {
|
||
|
|
self.for_creator_id = for_creator_id.get_optional();
|
||
|
|
self
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn search_term<T: MaybeOptional<String>>(mut self, search_term: T) -> Self {
|
||
|
|
self.search_term = search_term.get_optional();
|
||
|
|
self
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn url_search<T: MaybeOptional<String>>(mut self, url_search: T) -> Self {
|
||
|
|
self.url_search = url_search.get_optional();
|
||
|
|
self
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn show_nsfw(mut self, show_nsfw: bool) -> Self {
|
||
|
|
self.show_nsfw = show_nsfw;
|
||
|
|
self
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn saved_only(mut self, saved_only: bool) -> Self {
|
||
|
|
self.saved_only = saved_only;
|
||
|
|
self
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn page<T: MaybeOptional<i64>>(mut self, page: T) -> Self {
|
||
|
|
self.page = page.get_optional();
|
||
|
|
self
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn limit<T: MaybeOptional<i64>>(mut self, limit: T) -> Self {
|
||
|
|
self.limit = limit.get_optional();
|
||
|
|
self
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn list(self) -> Result<Vec<PostView>, Error> {
|
||
|
|
use diesel::dsl::*;
|
||
|
|
|
||
|
|
let mut query = self.query;
|
||
|
|
|
||
|
|
query = match self.listing_type {
|
||
|
|
ListingType::Subscribed => query.filter(community_follower::user_id.is_not_null()), // TODO could be this: and(community_follower::user_id.eq(user_id_join)),
|
||
|
|
ListingType::Local => query.filter(community::local.eq(true)),
|
||
|
|
_ => query,
|
||
|
|
};
|
||
|
|
|
||
|
|
if let Some(for_community_id) = self.for_community_id {
|
||
|
|
query = query
|
||
|
|
.filter(post::community_id.eq(for_community_id))
|
||
|
|
.then_order_by(post::stickied.desc());
|
||
|
|
}
|
||
|
|
|
||
|
|
if let Some(for_community_name) = self.for_community_name {
|
||
|
|
query = query
|
||
|
|
.filter(community::name.eq(for_community_name))
|
||
|
|
.filter(community::local.eq(true))
|
||
|
|
.then_order_by(post::stickied.desc());
|
||
|
|
}
|
||
|
|
|
||
|
|
if let Some(url_search) = self.url_search {
|
||
|
|
query = query.filter(post::url.eq(url_search));
|
||
|
|
}
|
||
|
|
|
||
|
|
if let Some(search_term) = self.search_term {
|
||
|
|
let searcher = fuzzy_search(&search_term);
|
||
|
|
query = query.filter(
|
||
|
|
post::name
|
||
|
|
.ilike(searcher.to_owned())
|
||
|
|
.or(post::body.ilike(searcher)),
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
query = match self.sort {
|
||
|
|
SortType::Active => query
|
||
|
|
.then_order_by(
|
||
|
|
hot_rank(post_aggregates::score, post_aggregates::newest_comment_time).desc(),
|
||
|
|
)
|
||
|
|
.then_order_by(post::published.desc()),
|
||
|
|
SortType::Hot => query
|
||
|
|
.then_order_by(hot_rank(post_aggregates::score, post::published).desc())
|
||
|
|
.then_order_by(post::published.desc()),
|
||
|
|
SortType::New => query.then_order_by(post::published.desc()),
|
||
|
|
SortType::TopAll => query.then_order_by(post_aggregates::score.desc()),
|
||
|
|
SortType::TopYear => query
|
||
|
|
.filter(post::published.gt(now - 1.years()))
|
||
|
|
.then_order_by(post_aggregates::score.desc()),
|
||
|
|
SortType::TopMonth => query
|
||
|
|
.filter(post::published.gt(now - 1.months()))
|
||
|
|
.then_order_by(post_aggregates::score.desc()),
|
||
|
|
SortType::TopWeek => query
|
||
|
|
.filter(post::published.gt(now - 1.weeks()))
|
||
|
|
.then_order_by(post_aggregates::score.desc()),
|
||
|
|
SortType::TopDay => query
|
||
|
|
.filter(post::published.gt(now - 1.days()))
|
||
|
|
.then_order_by(post_aggregates::score.desc()),
|
||
|
|
};
|
||
|
|
|
||
|
|
// If its for a specific user, show the removed / deleted
|
||
|
|
if let Some(for_creator_id) = self.for_creator_id {
|
||
|
|
query = query.filter(post::creator_id.eq(for_creator_id));
|
||
|
|
}
|
||
|
|
|
||
|
|
if !self.show_nsfw {
|
||
|
|
query = query
|
||
|
|
.filter(post::nsfw.eq(false))
|
||
|
|
.filter(community::nsfw.eq(false));
|
||
|
|
};
|
||
|
|
|
||
|
|
// TODO These two might be wrong
|
||
|
|
if self.saved_only {
|
||
|
|
query = query.filter(post_saved::id.is_not_null());
|
||
|
|
};
|
||
|
|
|
||
|
|
if self.unread_only {
|
||
|
|
query = query.filter(post_read::id.is_not_null());
|
||
|
|
};
|
||
|
|
|
||
|
|
let (limit, offset) = limit_and_offset(self.page, self.limit);
|
||
|
|
|
||
|
|
let res = query
|
||
|
|
.limit(limit)
|
||
|
|
.offset(offset)
|
||
|
|
.filter(post::removed.eq(false))
|
||
|
|
.filter(post::deleted.eq(false))
|
||
|
|
.filter(community::removed.eq(false))
|
||
|
|
.filter(community::deleted.eq(false))
|
||
|
|
.load::<OutputTuple>(self.conn)?;
|
||
|
|
|
||
|
|
Ok(to_vec(res))
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// TODO turn this into a trait with an associated type
|
||
|
|
fn to_vec(posts: Vec<OutputTuple>) -> Vec<PostView> {
|
||
|
|
posts
|
||
|
|
.iter()
|
||
|
|
.map(|a| PostView {
|
||
|
|
post: a.0.to_owned(),
|
||
|
|
creator: a.1.to_owned(),
|
||
|
|
community: a.2.to_owned(),
|
||
|
|
counts: a.3.to_owned(),
|
||
|
|
subscribed: a.4.is_some(),
|
||
|
|
banned_from_community: a.5.is_some(),
|
||
|
|
saved: a.6.is_some(),
|
||
|
|
read: a.7.is_some(),
|
||
|
|
my_vote: a.8,
|
||
|
|
})
|
||
|
|
.collect::<Vec<PostView>>()
|
||
|
|
}
|