crates/db_views_moderator/src/admin_purge_comment_view.rs

   1 use crate::structs::{AdminPurgeCommentView, ModlogListParams};
   2 use diesel::{result::Error, *};
   3 use lemmy_db_schema::{
   4   newtypes::PersonId,
   5   schema::{admin_purge_comment, person, post},
   6   source::{
   7     moderator::AdminPurgeComment,
   8     person::{Person, PersonSafe},
   9     post::Post,
  10   },
  11   traits::{ToSafe, ViewToVec},
  12   utils::limit_and_offset,
  13 };
  14
  15 type AdminPurgeCommentViewTuple = (AdminPurgeComment, Option<PersonSafe>, Post);
  16
  17 impl AdminPurgeCommentView {
  18   pub fn list(conn: &mut PgConnection, params: ModlogListParams) -> Result<Vec<Self>, Error> {
  19     let admin_person_id_join = params.mod_person_id.unwrap_or(PersonId(-1));
  20     let show_mod_names = !params.hide_modlog_names;
  21     let show_mod_names_expr = show_mod_names.as_sql::<diesel::sql_types::Bool>();
  22
  23     let admin_names_join = admin_purge_comment::admin_person_id
  24       .eq(person::id)
  25       .and(show_mod_names_expr.or(person::id.eq(admin_person_id_join)));
  26
  27     let mut query = admin_purge_comment::table
  28       .left_join(person::table.on(admin_names_join))
  29       .inner_join(post::table)
  30       .select((
  31         admin_purge_comment::all_columns,
  32         Person::safe_columns_tuple().nullable(),
  33         post::all_columns,
  34       ))
  35       .into_boxed();
  36
  37     if let Some(admin_person_id) = params.mod_person_id {
  38       query = query.filter(admin_purge_comment::admin_person_id.eq(admin_person_id));
  39     };
  40
  41     let (limit, offset) = limit_and_offset(params.page, params.limit)?;
  42
  43     let res = query
  44       .limit(limit)
  45       .offset(offset)
  46       .order_by(admin_purge_comment::when_.desc())
  47       .load::<AdminPurgeCommentViewTuple>(conn)?;
  48
  49     let results = Self::from_tuple_to_vec(res);
  50     Ok(results)
  51   }
  52 }
  53
  54 impl ViewToVec for AdminPurgeCommentView {
  55   type DbTuple = AdminPurgeCommentViewTuple;
  56   fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
  57     items
  58       .into_iter()
  59       .map(|a| Self {
  60         admin_purge_comment: a.0,
  61         admin: a.1,
  62         post: a.2,
  63       })
  64       .collect::<Vec<Self>>()
  65   }
  66 }