refactor: update fetcher

src/app/article/service.rs

@@ -90,7 +90,7 @@ pub fn fetch_articles_list(
         let mut query = articles::table.inner_join(users::table).into_boxed();
 
         if let Some(tag_name) = &params.tag {
-            let ids = Tag::fetch_ids_by_name(conn, tag_name)
+            let ids = Tag::fetch_article_ids_by_name(conn, tag_name)
                 .expect("could not fetch tagged article ids."); // TODO: use ? or error handling
             query = query.filter(articles::id.eq_any(ids));
         }
@@ -119,7 +119,7 @@ pub fn fetch_articles_list(
             let mut query = articles::table.inner_join(users::table).into_boxed();
 
             if let Some(tag_name) = &params.tag {
-                let ids = Tag::fetch_ids_by_name(conn, tag_name)
+                let ids = Tag::fetch_article_ids_by_name(conn, tag_name)
                     .expect("could not fetch tagged article ids."); // TODO: use ? or error handling
                 query = query.filter(articles::id.eq_any(ids));
             }

src/app/tag/model.rs

@@ -134,15 +134,16 @@ impl Tag {
         Ok(list)
     }
 
-    pub fn fetch_ids_by_name(
+    pub fn fetch_article_ids_by_name(
         conn: &mut PgConnection,
         tag_name: &str,
     ) -> Result<Vec<Uuid>, AppError> {
-        let ids = tags::table
-            .filter(Self::with_name(tag_name))
-            .select(tags::article_id)
-            .load::<Uuid>(conn)?;
-        Ok(ids)
+        let article_ids = Self::by_name(tag_name)
+            .load::<Tag>(conn)?
+            .iter()
+            .map(|tag| tag.article_id)
+            .collect();
+        Ok(article_ids)
     }
 
     pub fn create_list(