Fix deck filter

src/core/deck.rs

@@ -1,3 +1,4 @@
+use std::collections::HashMap;
 use crate::app::AppState;
 use crate::core::srs::OrderModule::{Fsrs, RandomSRS, SemiRandomSRS, WorstWordsSRS};
 use crate::core::srs::{
@@ -13,6 +14,7 @@ use log::info;
 use rhai::{Engine, Scope};
 use std::sync::Arc;
 use std::time::Instant;
+use crate::data::Id;
 
 #[derive(Clone)]
 pub struct DeckData {
@@ -154,10 +156,11 @@ impl DeckData {
         if let Ok(ast) = ast {
             let groups = state.word_groups.read().iter().cloned().collect::<Vec<_>>();
             let dictionary = &state.dictionary.read();
+            let fields : HashMap<Id, String> = HashMap::from_iter(state.custom_fields.read().iter().map(|f| (f.id, f.identifier.clone())));
             let query = dictionary.query_par(Arc::new(move |word| {
                 let mut more = rhai::Map::new();
-                for iced in &word.additional {
+                for kv in &word.additional {
-                    more.insert(iced.0.clone().into(), iced.1.clone().into());
+                    more.insert(fields[&kv.0].clone().into(), kv.1.clone().into());
                 }
                 let mut scope = Scope::new();
                 let group_name = groups[groups