Rewrite the synonyms endpoint; fix #418

meilisearch-http/src/routes/mod.rs

@@ -76,11 +76,12 @@ pub fn load_routes(app: &mut tide::App<Data>) {
                         .post(document::delete_multiple_documents);
                 });
 
-                router.at("/synonyms")
-                    .get(synonym::get)
-                    .post(synonym::update);
-
                 router.at("/settings").nest(|router| {
+                        router.at("/synonyms")
+                            .get(synonym::get)
+                            .post(synonym::update)
+                            .delete(synonym::delete);
+
                         router.at("/stop-words")
                             .get(stop_words::get)
                             .post(stop_words::update)

meilisearch-http/src/routes/synonym.rs

@@ -71,3 +71,26 @@ pub async fn update(mut ctx: Context<Data>) -> SResult<Response> {
         .with_status(StatusCode::ACCEPTED)
         .into_response())
 }
+
+
+pub async fn delete(ctx: Context<Data>) -> SResult<Response> {
+    ctx.is_allowed(SettingsWrite)?;
+
+    let index = ctx.index()?;
+
+    let db = &ctx.state().db;
+    let mut writer = db.update_write_txn().map_err(ResponseError::internal)?;
+
+    let synonyms_update = index.synonyms_update();
+
+    let update_id = synonyms_update
+        .finalize(&mut writer)
+        .map_err(ResponseError::internal)?;
+
+    writer.commit().map_err(ResponseError::internal)?;
+
+    let response_body = IndexUpdateResponse { update_id };
+    Ok(tide::response::json(response_body)
+        .with_status(StatusCode::ACCEPTED)
+        .into_response())
+}