crates/db_views/src/post_view.rs

   1 use crate::structs::PostView;
   2 use diesel::{dsl::*, pg::Pg, result::Error, *};
   3 use lemmy_db_schema::{
   4   aggregates::structs::PostAggregates,
   5   newtypes::{CommunityId, DbUrl, LocalUserId, PersonId, PostId},
   6   schema::{
   7     community,
   8     community_block,
   9     community_follower,
  10     community_person_ban,
  11     local_user_language,
  12     person,
  13     person_block,
  14     person_post_aggregates,
  15     post,
  16     post_aggregates,
  17     post_like,
  18     post_read,
  19     post_saved,
  20   },
  21   source::{
  22     community::{Community, CommunityFollower, CommunityPersonBan, CommunitySafe},
  23     local_user::LocalUser,
  24     person::{Person, PersonSafe},
  25     person_block::PersonBlock,
  26     post::{Post, PostRead, PostSaved},
  27   },
  28   traits::{ToSafe, ViewToVec},
  29   utils::{functions::hot_rank, fuzzy_search, limit_and_offset},
  30   ListingType,
  31   SortType,
  32 };
  33 use tracing::debug;
  34 use typed_builder::TypedBuilder;
  35
  36 type PostViewTuple = (
  37   Post,
  38   PersonSafe,
  39   CommunitySafe,
  40   Option<CommunityPersonBan>,
  41   PostAggregates,
  42   Option<CommunityFollower>,
  43   Option<PostSaved>,
  44   Option<PostRead>,
  45   Option<PersonBlock>,
  46   Option<i16>,
  47   i64,
  48 );
  49
  50 sql_function!(fn coalesce(x: sql_types::Nullable<sql_types::BigInt>, y: sql_types::BigInt) -> sql_types::BigInt);
  51
  52 impl PostView {
  53   pub fn read(
  54     conn: &mut PgConnection,
  55     post_id: PostId,
  56     my_person_id: Option<PersonId>,
  57   ) -> Result<Self, Error> {
  58     // The left join below will return None in this case
  59     let person_id_join = my_person_id.unwrap_or(PersonId(-1));
  60     let (
  61       post,
  62       creator,
  63       community,
  64       creator_banned_from_community,
  65       counts,
  66       follower,
  67       saved,
  68       read,
  69       creator_blocked,
  70       post_like,
  71       unread_comments,
  72     ) = post::table
  73       .find(post_id)
  74       .inner_join(person::table)
  75       .inner_join(community::table)
  76       .left_join(
  77         community_person_ban::table.on(
  78           post::community_id
  79             .eq(community_person_ban::community_id)
  80             .and(community_person_ban::person_id.eq(post::creator_id))
  81             .and(
  82               community_person_ban::expires
  83                 .is_null()
  84                 .or(community_person_ban::expires.gt(now)),
  85             ),
  86         ),
  87       )
  88       .inner_join(post_aggregates::table)
  89       .left_join(
  90         community_follower::table.on(
  91           post::community_id
  92             .eq(community_follower::community_id)
  93             .and(community_follower::person_id.eq(person_id_join)),
  94         ),
  95       )
  96       .left_join(
  97         post_saved::table.on(
  98           post::id
  99             .eq(post_saved::post_id)
 100             .and(post_saved::person_id.eq(person_id_join)),
 101         ),
 102       )
 103       .left_join(
 104         post_read::table.on(
 105           post::id
 106             .eq(post_read::post_id)
 107             .and(post_read::person_id.eq(person_id_join)),
 108         ),
 109       )
 110       .left_join(
 111         person_block::table.on(
 112           post::creator_id
 113             .eq(person_block::target_id)
 114             .and(person_block::person_id.eq(person_id_join)),
 115         ),
 116       )
 117       .left_join(
 118         post_like::table.on(
 119           post::id
 120             .eq(post_like::post_id)
 121             .and(post_like::person_id.eq(person_id_join)),
 122         ),
 123       )
 124       .left_join(
 125         person_post_aggregates::table.on(
 126           post::id
 127             .eq(person_post_aggregates::post_id)
 128             .and(person_post_aggregates::person_id.eq(person_id_join)),
 129         ),
 130       )
 131       .select((
 132         post::all_columns,
 133         Person::safe_columns_tuple(),
 134         Community::safe_columns_tuple(),
 135         community_person_ban::all_columns.nullable(),
 136         post_aggregates::all_columns,
 137         community_follower::all_columns.nullable(),
 138         post_saved::all_columns.nullable(),
 139         post_read::all_columns.nullable(),
 140         person_block::all_columns.nullable(),
 141         post_like::score.nullable(),
 142         coalesce(
 143           post_aggregates::comments.nullable() - person_post_aggregates::read_comments.nullable(),
 144           post_aggregates::comments,
 145         ),
 146       ))
 147       .first::<PostViewTuple>(conn)?;
 148
 149     // If a person is given, then my_vote, if None, should be 0, not null
 150     // Necessary to differentiate between other person's votes
 151     let my_vote = if my_person_id.is_some() && post_like.is_none() {
 152       Some(0)
 153     } else {
 154       post_like
 155     };
 156
 157     Ok(PostView {
 158       post,
 159       creator,
 160       community,
 161       creator_banned_from_community: creator_banned_from_community.is_some(),
 162       counts,
 163       subscribed: CommunityFollower::to_subscribed_type(&follower),
 164       saved: saved.is_some(),
 165       read: read.is_some(),
 166       creator_blocked: creator_blocked.is_some(),
 167       my_vote,
 168       unread_comments,
 169     })
 170   }
 171 }
 172
 173 #[derive(TypedBuilder)]
 174 #[builder(field_defaults(default))]
 175 pub struct PostQuery<'a> {
 176   #[builder(!default)]
 177   conn: &'a mut PgConnection,
 178   listing_type: Option<ListingType>,
 179   sort: Option<SortType>,
 180   creator_id: Option<PersonId>,
 181   community_id: Option<CommunityId>,
 182   community_actor_id: Option<DbUrl>,
 183   local_user: Option<&'a LocalUser>,
 184   search_term: Option<String>,
 185   url_search: Option<String>,
 186   saved_only: Option<bool>,
 187   page: Option<i64>,
 188   limit: Option<i64>,
 189 }
 190
 191 impl<'a> PostQuery<'a> {
 192   pub fn list(self) -> Result<Vec<PostView>, Error> {
 193     use diesel::dsl::*;
 194
 195     // The left join below will return None in this case
 196     let person_id_join = self.local_user.map(|l| l.person_id).unwrap_or(PersonId(-1));
 197     let local_user_id_join = self.local_user.map(|l| l.id).unwrap_or(LocalUserId(-1));
 198
 199     let mut query = post::table
 200       .inner_join(person::table)
 201       .inner_join(community::table)
 202       .left_join(
 203         community_person_ban::table.on(
 204           post::community_id
 205             .eq(community_person_ban::community_id)
 206             .and(community_person_ban::person_id.eq(post::creator_id))
 207             .and(
 208               community_person_ban::expires
 209                 .is_null()
 210                 .or(community_person_ban::expires.gt(now)),
 211             ),
 212         ),
 213       )
 214       .inner_join(post_aggregates::table)
 215       .left_join(
 216         community_follower::table.on(
 217           post::community_id
 218             .eq(community_follower::community_id)
 219             .and(community_follower::person_id.eq(person_id_join)),
 220         ),
 221       )
 222       .left_join(
 223         post_saved::table.on(
 224           post::id
 225             .eq(post_saved::post_id)
 226             .and(post_saved::person_id.eq(person_id_join)),
 227         ),
 228       )
 229       .left_join(
 230         post_read::table.on(
 231           post::id
 232             .eq(post_read::post_id)
 233             .and(post_read::person_id.eq(person_id_join)),
 234         ),
 235       )
 236       .left_join(
 237         person_block::table.on(
 238           post::creator_id
 239             .eq(person_block::target_id)
 240             .and(person_block::person_id.eq(person_id_join)),
 241         ),
 242       )
 243       .left_join(
 244         community_block::table.on(
 245           community::id
 246             .eq(community_block::community_id)
 247             .and(community_block::person_id.eq(person_id_join)),
 248         ),
 249       )
 250       .left_join(
 251         post_like::table.on(
 252           post::id
 253             .eq(post_like::post_id)
 254             .and(post_like::person_id.eq(person_id_join)),
 255         ),
 256       )
 257       .left_join(
 258         person_post_aggregates::table.on(
 259           post::id
 260             .eq(person_post_aggregates::post_id)
 261             .and(person_post_aggregates::person_id.eq(person_id_join)),
 262         ),
 263       )
 264       .left_join(
 265         local_user_language::table.on(
 266           post::language_id
 267             .eq(local_user_language::language_id)
 268             .and(local_user_language::local_user_id.eq(local_user_id_join)),
 269         ),
 270       )
 271       .select((
 272         post::all_columns,
 273         Person::safe_columns_tuple(),
 274         Community::safe_columns_tuple(),
 275         community_person_ban::all_columns.nullable(),
 276         post_aggregates::all_columns,
 277         community_follower::all_columns.nullable(),
 278         post_saved::all_columns.nullable(),
 279         post_read::all_columns.nullable(),
 280         person_block::all_columns.nullable(),
 281         post_like::score.nullable(),
 282         coalesce(
 283           post_aggregates::comments.nullable() - person_post_aggregates::read_comments.nullable(),
 284           post_aggregates::comments,
 285         ),
 286       ))
 287       .into_boxed();
 288
 289     if let Some(listing_type) = self.listing_type {
 290       match listing_type {
 291         ListingType::Subscribed => {
 292           query = query.filter(community_follower::person_id.is_not_null())
 293         }
 294         ListingType::Local => {
 295           query = query.filter(community::local.eq(true)).filter(
 296             community::hidden
 297               .eq(false)
 298               .or(community_follower::person_id.eq(person_id_join)),
 299           );
 300         }
 301         ListingType::All => {
 302           query = query.filter(
 303             community::hidden
 304               .eq(false)
 305               .or(community_follower::person_id.eq(person_id_join)),
 306           )
 307         }
 308       }
 309     }
 310
 311     if let Some(community_id) = self.community_id {
 312       query = query
 313         .filter(post::community_id.eq(community_id))
 314         .then_order_by(post_aggregates::stickied.desc());
 315     }
 316
 317     if let Some(community_actor_id) = self.community_actor_id {
 318       query = query
 319         .filter(community::actor_id.eq(community_actor_id))
 320         .then_order_by(post_aggregates::stickied.desc());
 321     }
 322
 323     if let Some(url_search) = self.url_search {
 324       query = query.filter(post::url.eq(url_search));
 325     }
 326
 327     if let Some(search_term) = self.search_term {
 328       let searcher = fuzzy_search(&search_term);
 329       query = query.filter(
 330         post::name
 331           .ilike(searcher.to_owned())
 332           .or(post::body.ilike(searcher)),
 333       );
 334     }
 335
 336     // If its for a specific person, show the removed / deleted
 337     if let Some(creator_id) = self.creator_id {
 338       query = query.filter(post::creator_id.eq(creator_id));
 339     }
 340
 341     if !self.local_user.map(|l| l.show_nsfw).unwrap_or(false) {
 342       query = query
 343         .filter(post::nsfw.eq(false))
 344         .filter(community::nsfw.eq(false));
 345     };
 346
 347     if !self.local_user.map(|l| l.show_bot_accounts).unwrap_or(true) {
 348       query = query.filter(person::bot_account.eq(false));
 349     };
 350
 351     if self.saved_only.unwrap_or(false) {
 352       query = query.filter(post_saved::id.is_not_null());
 353     }
 354     // Only hide the read posts, if the saved_only is false. Otherwise ppl with the hide_read
 355     // setting wont be able to see saved posts.
 356     else if !self.local_user.map(|l| l.show_read_posts).unwrap_or(true) {
 357       query = query.filter(post_read::id.is_null());
 358     }
 359
 360     if self.local_user.is_some() {
 361       // Filter out the rows with missing languages
 362       query = query.filter(local_user_language::id.is_not_null());
 363
 364       // Don't show blocked communities or persons
 365       query = query.filter(community_block::person_id.is_null());
 366       query = query.filter(person_block::person_id.is_null());
 367     }
 368
 369     query = match self.sort.unwrap_or(SortType::Hot) {
 370       SortType::Active => query
 371         .then_order_by(
 372           hot_rank(
 373             post_aggregates::score,
 374             post_aggregates::newest_comment_time_necro,
 375           )
 376           .desc(),
 377         )
 378         .then_order_by(post_aggregates::newest_comment_time_necro.desc()),
 379       SortType::Hot => query
 380         .then_order_by(hot_rank(post_aggregates::score, post_aggregates::published).desc())
 381         .then_order_by(post_aggregates::published.desc()),
 382       SortType::New => query.then_order_by(post_aggregates::published.desc()),
 383       SortType::Old => query.then_order_by(post_aggregates::published.asc()),
 384       SortType::NewComments => query.then_order_by(post_aggregates::newest_comment_time.desc()),
 385       SortType::MostComments => query
 386         .then_order_by(post_aggregates::comments.desc())
 387         .then_order_by(post_aggregates::published.desc()),
 388       SortType::TopAll => query
 389         .then_order_by(post_aggregates::score.desc())
 390         .then_order_by(post_aggregates::published.desc()),
 391       SortType::TopYear => query
 392         .filter(post_aggregates::published.gt(now - 1.years()))
 393         .then_order_by(post_aggregates::score.desc())
 394         .then_order_by(post_aggregates::published.desc()),
 395       SortType::TopMonth => query
 396         .filter(post_aggregates::published.gt(now - 1.months()))
 397         .then_order_by(post_aggregates::score.desc())
 398         .then_order_by(post_aggregates::published.desc()),
 399       SortType::TopWeek => query
 400         .filter(post_aggregates::published.gt(now - 1.weeks()))
 401         .then_order_by(post_aggregates::score.desc())
 402         .then_order_by(post_aggregates::published.desc()),
 403       SortType::TopDay => query
 404         .filter(post_aggregates::published.gt(now - 1.days()))
 405         .then_order_by(post_aggregates::score.desc())
 406         .then_order_by(post_aggregates::published.desc()),
 407     };
 408
 409     let (limit, offset) = limit_and_offset(self.page, self.limit)?;
 410
 411     query = query
 412       .limit(limit)
 413       .offset(offset)
 414       .filter(post::removed.eq(false))
 415       .filter(post::deleted.eq(false))
 416       .filter(community::removed.eq(false))
 417       .filter(community::deleted.eq(false));
 418
 419     debug!("Post View Query: {:?}", debug_query::<Pg, _>(&query));
 420
 421     let res = query.load::<PostViewTuple>(self.conn)?;
 422
 423     Ok(PostView::from_tuple_to_vec(res))
 424   }
 425 }
 426
 427 impl ViewToVec for PostView {
 428   type DbTuple = PostViewTuple;
 429   fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
 430     items
 431       .into_iter()
 432       .map(|a| Self {
 433         post: a.0,
 434         creator: a.1,
 435         community: a.2,
 436         creator_banned_from_community: a.3.is_some(),
 437         counts: a.4,
 438         subscribed: CommunityFollower::to_subscribed_type(&a.5),
 439         saved: a.6.is_some(),
 440         read: a.7.is_some(),
 441         creator_blocked: a.8.is_some(),
 442         my_vote: a.9,
 443         unread_comments: a.10,
 444       })
 445       .collect::<Vec<Self>>()
 446   }
 447 }
 448
 449 #[cfg(test)]
 450 mod tests {
 451   use crate::post_view::{PostQuery, PostView};
 452   use diesel::PgConnection;
 453   use lemmy_db_schema::{
 454     aggregates::structs::PostAggregates,
 455     newtypes::LanguageId,
 456     source::{
 457       actor_language::LocalUserLanguage,
 458       community::*,
 459       community_block::{CommunityBlock, CommunityBlockForm},
 460       instance::Instance,
 461       language::Language,
 462       local_user::{LocalUser, LocalUserInsertForm, LocalUserUpdateForm},
 463       person::*,
 464       person_block::{PersonBlock, PersonBlockForm},
 465       post::*,
 466     },
 467     traits::{Blockable, Crud, Likeable},
 468     utils::establish_unpooled_connection,
 469     SortType,
 470     SubscribedType,
 471   };
 472   use serial_test::serial;
 473
 474   struct Data {
 475     inserted_instance: Instance,
 476     inserted_person: Person,
 477     inserted_local_user: LocalUser,
 478     inserted_blocked_person: Person,
 479     inserted_bot: Person,
 480     inserted_community: Community,
 481     inserted_post: Post,
 482   }
 483
 484   fn init_data(conn: &mut PgConnection) -> Data {
 485     let inserted_instance = Instance::create(conn, "my_domain.tld").unwrap();
 486
 487     let person_name = "tegan".to_string();
 488
 489     let new_person = PersonInsertForm::builder()
 490       .name(person_name.to_owned())
 491       .public_key("pubkey".to_string())
 492       .instance_id(inserted_instance.id)
 493       .build();
 494
 495     let inserted_person = Person::create(conn, &new_person).unwrap();
 496
 497     let local_user_form = LocalUserInsertForm::builder()
 498       .person_id(inserted_person.id)
 499       .password_encrypted("".to_string())
 500       .build();
 501     let inserted_local_user = LocalUser::create(conn, &local_user_form).unwrap();
 502
 503     let new_bot = PersonInsertForm::builder()
 504       .name("mybot".to_string())
 505       .bot_account(Some(true))
 506       .public_key("pubkey".to_string())
 507       .instance_id(inserted_instance.id)
 508       .build();
 509
 510     let inserted_bot = Person::create(conn, &new_bot).unwrap();
 511
 512     let new_community = CommunityInsertForm::builder()
 513       .name("test_community_3".to_string())
 514       .title("nada".to_owned())
 515       .public_key("pubkey".to_string())
 516       .instance_id(inserted_instance.id)
 517       .build();
 518
 519     let inserted_community = Community::create(conn, &new_community).unwrap();
 520
 521     // Test a person block, make sure the post query doesn't include their post
 522     let blocked_person = PersonInsertForm::builder()
 523       .name(person_name)
 524       .public_key("pubkey".to_string())
 525       .instance_id(inserted_instance.id)
 526       .build();
 527
 528     let inserted_blocked_person = Person::create(conn, &blocked_person).unwrap();
 529
 530     let post_from_blocked_person = PostInsertForm::builder()
 531       .name("blocked_person_post".to_string())
 532       .creator_id(inserted_blocked_person.id)
 533       .community_id(inserted_community.id)
 534       .language_id(Some(LanguageId(1)))
 535       .build();
 536
 537     Post::create(conn, &post_from_blocked_person).unwrap();
 538
 539     // block that person
 540     let person_block = PersonBlockForm {
 541       person_id: inserted_person.id,
 542       target_id: inserted_blocked_person.id,
 543     };
 544
 545     PersonBlock::block(conn, &person_block).unwrap();
 546
 547     // A sample post
 548     let new_post = PostInsertForm::builder()
 549       .name("test post 3".to_string())
 550       .creator_id(inserted_person.id)
 551       .community_id(inserted_community.id)
 552       .language_id(Some(LanguageId(47)))
 553       .build();
 554
 555     let inserted_post = Post::create(conn, &new_post).unwrap();
 556
 557     let new_bot_post = PostInsertForm::builder()
 558       .name("test bot post".to_string())
 559       .creator_id(inserted_bot.id)
 560       .community_id(inserted_community.id)
 561       .build();
 562
 563     let _inserted_bot_post = Post::create(conn, &new_bot_post).unwrap();
 564
 565     Data {
 566       inserted_instance,
 567       inserted_person,
 568       inserted_local_user,
 569       inserted_blocked_person,
 570       inserted_bot,
 571       inserted_community,
 572       inserted_post,
 573     }
 574   }
 575
 576   #[test]
 577   #[serial]
 578   fn post_listing_with_person() {
 579     let conn = &mut establish_unpooled_connection();
 580     let data = init_data(conn);
 581
 582     let local_user_form = LocalUserUpdateForm::builder()
 583       .show_bot_accounts(Some(false))
 584       .build();
 585     let inserted_local_user =
 586       LocalUser::update(conn, data.inserted_local_user.id, &local_user_form).unwrap();
 587
 588     let read_post_listing = PostQuery::builder()
 589       .conn(conn)
 590       .sort(Some(SortType::New))
 591       .community_id(Some(data.inserted_community.id))
 592       .local_user(Some(&inserted_local_user))
 593       .build()
 594       .list()
 595       .unwrap();
 596
 597     let post_listing_single_with_person =
 598       PostView::read(conn, data.inserted_post.id, Some(data.inserted_person.id)).unwrap();
 599
 600     let mut expected_post_listing_with_user = expected_post_view(&data, conn);
 601
 602     // Should be only one person, IE the bot post, and blocked should be missing
 603     assert_eq!(1, read_post_listing.len());
 604
 605     assert_eq!(expected_post_listing_with_user, read_post_listing[0]);
 606     expected_post_listing_with_user.my_vote = Some(0);
 607     assert_eq!(
 608       expected_post_listing_with_user,
 609       post_listing_single_with_person
 610     );
 611
 612     let local_user_form = LocalUserUpdateForm::builder()
 613       .show_bot_accounts(Some(true))
 614       .build();
 615     let inserted_local_user =
 616       LocalUser::update(conn, data.inserted_local_user.id, &local_user_form).unwrap();
 617
 618     let post_listings_with_bots = PostQuery::builder()
 619       .conn(conn)
 620       .sort(Some(SortType::New))
 621       .community_id(Some(data.inserted_community.id))
 622       .local_user(Some(&inserted_local_user))
 623       .build()
 624       .list()
 625       .unwrap();
 626     // should include bot post which has "undetermined" language
 627     assert_eq!(2, post_listings_with_bots.len());
 628
 629     cleanup(data, conn);
 630   }
 631
 632   #[test]
 633   #[serial]
 634   fn post_listing_no_person() {
 635     let conn = &mut establish_unpooled_connection();
 636     let data = init_data(conn);
 637
 638     let read_post_listing_multiple_no_person = PostQuery::builder()
 639       .conn(conn)
 640       .sort(Some(SortType::New))
 641       .community_id(Some(data.inserted_community.id))
 642       .build()
 643       .list()
 644       .unwrap();
 645
 646     let read_post_listing_single_no_person =
 647       PostView::read(conn, data.inserted_post.id, None).unwrap();
 648
 649     let expected_post_listing_no_person = expected_post_view(&data, conn);
 650
 651     // Should be 2 posts, with the bot post, and the blocked
 652     assert_eq!(3, read_post_listing_multiple_no_person.len());
 653
 654     assert_eq!(
 655       expected_post_listing_no_person,
 656       read_post_listing_multiple_no_person[1]
 657     );
 658     assert_eq!(
 659       expected_post_listing_no_person,
 660       read_post_listing_single_no_person
 661     );
 662
 663     cleanup(data, conn);
 664   }
 665
 666   #[test]
 667   #[serial]
 668   fn post_listing_block_community() {
 669     let conn = &mut establish_unpooled_connection();
 670     let data = init_data(conn);
 671
 672     let community_block = CommunityBlockForm {
 673       person_id: data.inserted_person.id,
 674       community_id: data.inserted_community.id,
 675     };
 676     CommunityBlock::block(conn, &community_block).unwrap();
 677
 678     let read_post_listings_with_person_after_block = PostQuery::builder()
 679       .conn(conn)
 680       .sort(Some(SortType::New))
 681       .community_id(Some(data.inserted_community.id))
 682       .local_user(Some(&data.inserted_local_user))
 683       .build()
 684       .list()
 685       .unwrap();
 686     // Should be 0 posts after the community block
 687     assert_eq!(0, read_post_listings_with_person_after_block.len());
 688
 689     CommunityBlock::unblock(conn, &community_block).unwrap();
 690     cleanup(data, conn);
 691   }
 692
 693   #[test]
 694   #[serial]
 695   fn post_listing_like() {
 696     let conn = &mut establish_unpooled_connection();
 697     let data = init_data(conn);
 698
 699     let post_like_form = PostLikeForm {
 700       post_id: data.inserted_post.id,
 701       person_id: data.inserted_person.id,
 702       score: 1,
 703     };
 704
 705     let inserted_post_like = PostLike::like(conn, &post_like_form).unwrap();
 706
 707     let expected_post_like = PostLike {
 708       id: inserted_post_like.id,
 709       post_id: data.inserted_post.id,
 710       person_id: data.inserted_person.id,
 711       published: inserted_post_like.published,
 712       score: 1,
 713     };
 714     assert_eq!(expected_post_like, inserted_post_like);
 715
 716     let like_removed =
 717       PostLike::remove(conn, data.inserted_person.id, data.inserted_post.id).unwrap();
 718     assert_eq!(1, like_removed);
 719     cleanup(data, conn);
 720   }
 721
 722   #[test]
 723   #[serial]
 724   fn post_listing_person_language() {
 725     let conn = &mut establish_unpooled_connection();
 726     let data = init_data(conn);
 727
 728     let spanish_id = Language::read_id_from_code(conn, "es").unwrap();
 729     let post_spanish = PostInsertForm::builder()
 730       .name("asffgdsc".to_string())
 731       .creator_id(data.inserted_person.id)
 732       .community_id(data.inserted_community.id)
 733       .language_id(Some(spanish_id))
 734       .build();
 735
 736     Post::create(conn, &post_spanish).unwrap();
 737
 738     let post_listings_all = PostQuery::builder()
 739       .conn(conn)
 740       .sort(Some(SortType::New))
 741       .local_user(Some(&data.inserted_local_user))
 742       .build()
 743       .list()
 744       .unwrap();
 745
 746     // no language filters specified, all posts should be returned
 747     assert_eq!(3, post_listings_all.len());
 748
 749     let french_id = Language::read_id_from_code(conn, "fr").unwrap();
 750     LocalUserLanguage::update(conn, vec![french_id], data.inserted_local_user.id).unwrap();
 751
 752     let post_listing_french = PostQuery::builder()
 753       .conn(conn)
 754       .sort(Some(SortType::New))
 755       .local_user(Some(&data.inserted_local_user))
 756       .build()
 757       .list()
 758       .unwrap();
 759
 760     // only one french language post should be returned
 761     assert_eq!(1, post_listing_french.len());
 762     assert_eq!(french_id, post_listing_french[0].post.language_id);
 763
 764     let undetermined_id = Language::read_id_from_code(conn, "und").unwrap();
 765     LocalUserLanguage::update(
 766       conn,
 767       vec![french_id, undetermined_id],
 768       data.inserted_local_user.id,
 769     )
 770     .unwrap();
 771     let post_listings_french_und = PostQuery::builder()
 772       .conn(conn)
 773       .sort(Some(SortType::New))
 774       .local_user(Some(&data.inserted_local_user))
 775       .build()
 776       .list()
 777       .unwrap();
 778
 779     // french post and undetermined language post should be returned
 780     assert_eq!(2, post_listings_french_und.len());
 781     assert_eq!(
 782       undetermined_id,
 783       post_listings_french_und[0].post.language_id
 784     );
 785     assert_eq!(french_id, post_listings_french_und[1].post.language_id);
 786
 787     cleanup(data, conn);
 788   }
 789
 790   fn cleanup(data: Data, conn: &mut PgConnection) {
 791     let num_deleted = Post::delete(conn, data.inserted_post.id).unwrap();
 792     Community::delete(conn, data.inserted_community.id).unwrap();
 793     Person::delete(conn, data.inserted_person.id).unwrap();
 794     Person::delete(conn, data.inserted_bot.id).unwrap();
 795     Person::delete(conn, data.inserted_blocked_person.id).unwrap();
 796     Instance::delete(conn, data.inserted_instance.id).unwrap();
 797     assert_eq!(1, num_deleted);
 798   }
 799
 800   fn expected_post_view(data: &Data, conn: &mut PgConnection) -> PostView {
 801     let (inserted_person, inserted_community, inserted_post) = (
 802       &data.inserted_person,
 803       &data.inserted_community,
 804       &data.inserted_post,
 805     );
 806     let agg = PostAggregates::read(conn, inserted_post.id).unwrap();
 807
 808     PostView {
 809       post: Post {
 810         id: inserted_post.id,
 811         name: inserted_post.name.clone(),
 812         creator_id: inserted_person.id,
 813         url: None,
 814         body: None,
 815         published: inserted_post.published,
 816         updated: None,
 817         community_id: inserted_community.id,
 818         removed: false,
 819         deleted: false,
 820         locked: false,
 821         stickied: false,
 822         nsfw: false,
 823         embed_title: None,
 824         embed_description: None,
 825         embed_video_url: None,
 826         thumbnail_url: None,
 827         ap_id: inserted_post.ap_id.to_owned(),
 828         local: true,
 829         language_id: LanguageId(47),
 830       },
 831       my_vote: None,
 832       unread_comments: 0,
 833       creator: PersonSafe {
 834         id: inserted_person.id,
 835         name: inserted_person.name.clone(),
 836         display_name: None,
 837         published: inserted_person.published,
 838         avatar: None,
 839         actor_id: inserted_person.actor_id.to_owned(),
 840         local: true,
 841         admin: false,
 842         bot_account: false,
 843         banned: false,
 844         deleted: false,
 845         bio: None,
 846         banner: None,
 847         updated: None,
 848         inbox_url: inserted_person.inbox_url.to_owned(),
 849         shared_inbox_url: None,
 850         matrix_user_id: None,
 851         ban_expires: None,
 852         instance_id: data.inserted_instance.id,
 853       },
 854       creator_banned_from_community: false,
 855       community: CommunitySafe {
 856         id: inserted_community.id,
 857         name: inserted_community.name.clone(),
 858         icon: None,
 859         removed: false,
 860         deleted: false,
 861         nsfw: false,
 862         actor_id: inserted_community.actor_id.to_owned(),
 863         local: true,
 864         title: "nada".to_owned(),
 865         description: None,
 866         updated: None,
 867         banner: None,
 868         hidden: false,
 869         posting_restricted_to_mods: false,
 870         published: inserted_community.published,
 871         instance_id: data.inserted_instance.id,
 872       },
 873       counts: PostAggregates {
 874         id: agg.id,
 875         post_id: inserted_post.id,
 876         comments: 0,
 877         score: 0,
 878         upvotes: 0,
 879         downvotes: 0,
 880         stickied: false,
 881         published: agg.published,
 882         newest_comment_time_necro: inserted_post.published,
 883         newest_comment_time: inserted_post.published,
 884       },
 885       subscribed: SubscribedType::NotSubscribed,
 886       read: false,
 887       saved: false,
 888       creator_blocked: false,
 889     }
 890   }
 891 }