crates/db_views_moderator/src/mod_remove_post_view.rs

   1 use crate::structs::{ModRemovePostView, ModlogListParams};
   2 use diesel::{
   3   result::Error,
   4   BoolExpressionMethods,
   5   ExpressionMethods,
   6   IntoSql,
   7   JoinOnDsl,
   8   NullableExpressionMethods,
   9   QueryDsl,
  10 };
  11 use diesel_async::RunQueryDsl;
  12 use lemmy_db_schema::{
  13   newtypes::PersonId,
  14   schema::{community, mod_remove_post, person, post},
  15   source::{
  16     community::{Community, CommunitySafe},
  17     moderator::ModRemovePost,
  18     person::{Person, PersonSafe},
  19     post::Post,
  20   },
  21   traits::{ToSafe, ViewToVec},
  22   utils::{get_conn, limit_and_offset, DbPool},
  23 };
  24
  25 type ModRemovePostViewTuple = (ModRemovePost, Option<PersonSafe>, Post, CommunitySafe);
  26
  27 impl ModRemovePostView {
  28   pub async fn list(pool: &DbPool, params: ModlogListParams) -> Result<Vec<Self>, Error> {
  29     let conn = &mut get_conn(pool).await?;
  30
  31     let person_alias_1 = diesel::alias!(person as person1);
  32     let admin_person_id_join = params.mod_person_id.unwrap_or(PersonId(-1));
  33     let show_mod_names = !params.hide_modlog_names;
  34     let show_mod_names_expr = show_mod_names.as_sql::<diesel::sql_types::Bool>();
  35
  36     let admin_names_join = mod_remove_post::mod_person_id
  37       .eq(person::id)
  38       .and(show_mod_names_expr.or(person::id.eq(admin_person_id_join)));
  39     let mut query = mod_remove_post::table
  40       .left_join(person::table.on(admin_names_join))
  41       .inner_join(post::table)
  42       .inner_join(community::table.on(post::community_id.eq(community::id)))
  43       .inner_join(person_alias_1.on(post::creator_id.eq(person_alias_1.field(person::id))))
  44       .select((
  45         mod_remove_post::all_columns,
  46         Person::safe_columns_tuple().nullable(),
  47         post::all_columns,
  48         Community::safe_columns_tuple(),
  49       ))
  50       .into_boxed();
  51
  52     if let Some(community_id) = params.community_id {
  53       query = query.filter(post::community_id.eq(community_id));
  54     };
  55
  56     if let Some(mod_person_id) = params.mod_person_id {
  57       query = query.filter(mod_remove_post::mod_person_id.eq(mod_person_id));
  58     };
  59
  60     if let Some(other_person_id) = params.other_person_id {
  61       query = query.filter(person_alias_1.field(person::id).eq(other_person_id));
  62     };
  63
  64     let (limit, offset) = limit_and_offset(params.page, params.limit)?;
  65
  66     let res = query
  67       .limit(limit)
  68       .offset(offset)
  69       .order_by(mod_remove_post::when_.desc())
  70       .load::<ModRemovePostViewTuple>(conn)
  71       .await?;
  72
  73     let results = Self::from_tuple_to_vec(res);
  74     Ok(results)
  75   }
  76 }
  77
  78 impl ViewToVec for ModRemovePostView {
  79   type DbTuple = ModRemovePostViewTuple;
  80   fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
  81     items
  82       .into_iter()
  83       .map(|a| Self {
  84         mod_remove_post: a.0,
  85         moderator: a.1,
  86         post: a.2,
  87         community: a.3,
  88       })
  89       .collect::<Vec<Self>>()
  90   }
  91 }