crates/db_views_moderator/src/mod_transfer_community_view.rs

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