Merge pull request #731 from thoth-pub/feature/fuzzy_isbn_search

Support searching for publications by unhyphenated ISBN

Author: rhigman

CHANGELOG.md

@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Changed
+  - [#731](https://github.com/thoth-pub/thoth/pull/731) - Ignore hyphens when filtering publications on ISBN
 
 ## [[0.13.15]](https://github.com/thoth-pub/thoth/releases/tag/v0.13.15) - 2025-12-03
 ### Changed

thoth-api/src/model/publication/crud.rs

@@ -3,10 +3,12 @@ use super::{
     PublicationHistory, PublicationOrderBy, PublicationType,
 };
 use crate::graphql::utils::Direction;
-use crate::model::{Crud, DbInsert, HistoryEntry};
+use crate::model::{Crud, DbInsert, HistoryEntry, Isbn};
 use crate::schema::{publication, publication_history};
 use crate::{crud_methods, db_insert};
-use diesel::{ExpressionMethods, PgTextExpressionMethods, QueryDsl, RunQueryDsl};
+use diesel::{
+    dsl::sql, sql_types::Text, ExpressionMethods, PgTextExpressionMethods, QueryDsl, RunQueryDsl,
+};
 use thoth_errors::ThothResult;
 use uuid::Uuid;
 
@@ -112,7 +114,11 @@ impl Crud for Publication {
         if let Some(filter) = filter {
             // ISBN field is nullable, so searching with an empty filter could fail
             if !filter.is_empty() {
-                query = query.filter(isbn.ilike(format!("%{filter}%")));
+                // Ignore ISBN hyphenation when searching
+                query = query.filter(
+                    sql::<Text>("replace(isbn, '-', '')")
+                        .ilike(format!("%{}%", filter.replace("-", ""))),
+                );
             }
         }
         query
@@ -144,7 +150,11 @@ impl Crud for Publication {
         if let Some(filter) = filter {
             // ISBN field is nullable, so searching with an empty filter could fail
             if !filter.is_empty() {
-                query = query.filter(isbn.ilike(format!("%{filter}%")));
+                // Ignore ISBN hyphenation when searching
+                query = query.filter(
+                    sql::<Text>("replace(isbn, '-', '')")
+                        .ilike(format!("%{}%", filter.replace("-", ""))),
+                );
             }
         }