Added a message box to display release information

src/libs/services/database/impl/Artist.cpp

@@ -97,7 +97,8 @@ createQuery(Session& session, const Artist::FindParameters& params)
 	if (params.sortMethod == ArtistSortMethod::LastWritten
 			|| params.writtenAfter.isValid()
 			|| params.linkType
-			|| params.track.isValid())
+			|| params.track.isValid()
+			|| params.release.isValid())
 	{
 		query.join("track t ON t.id = t_a_l.track_id");
 		query.join("track_artist_link t_a_l ON t_a_l.artist_id = a.id");
@@ -161,9 +162,10 @@ createQuery(Session& session, const Artist::FindParameters& params)
 	}
 
 	if (params.track.isValid())
-	{
 		query.where("t.id = ?").bind(params.track);
-	}
+
+	if (params.release.isValid())
+		query.where("t.release_id = ?").bind(params.release);
 
 	switch (params.sortMethod)
 	{

src/libs/services/database/include/services/database/Artist.hpp

@@ -63,6 +63,7 @@ class Artist : public Object<Artist, ArtistId>
 			UserId								starringUser;	// only artists starred by this user
 			std::optional<Scrobbler>			scrobbler;		// and for this scrobbler
 			TrackId								track;		// artists involved in this track
+			ReleaseId							release;	// artists involved in this release
 
 			FindParameters& setClusters(const std::vector<ClusterId>& _clusters) { clusters = _clusters; return *this; }
 			FindParameters& setKeywords(const std::vector<std::string_view>& _keywords) { keywords = _keywords; return *this; }
@@ -72,6 +73,7 @@ class Artist : public Object<Artist, ArtistId>
 			FindParameters& setWrittenAfter(const Wt::WDateTime& _after) { writtenAfter = _after; return *this; }
 			FindParameters& setStarringUser(UserId _user, Scrobbler _scrobbler) { starringUser = _user; scrobbler = _scrobbler; return *this; }
 			FindParameters& setTrack(TrackId _track) { track = _track; return *this; }
+			FindParameters& setRelease(ReleaseId _release) { release = _release; return *this; }
 		};
 
 		Artist() = default;

src/libs/services/database/test/Artist.cpp

@@ -372,9 +372,46 @@ TEST_F(DatabaseFixture, Artist_nonReleaseTracks)
 	{
 		auto transaction {session.createSharedTransaction()};
 
-		const auto tracks {Track::find(session, Track::FindParameters {}.setArtist(artist->getId()).setNonRelease(true))};
+		const auto tracks {Track::find(session, Track::FindParameters {}.setArtist(artist.getId()).setNonRelease(true))};
 		ASSERT_EQ(tracks.results.size(), 1);
 		EXPECT_EQ(tracks.results.front(), track2.getId());
 	}
+
+}
+
+TEST_F(DatabaseFixture, Artist_findByRelease)
+{
+	ScopedArtist artist {session, "artist"};
+	ScopedTrack track {session, "MyTrack"};
+	ScopedRelease release{session, "MyRelease"};
+
+	{
+		auto transaction {session.createSharedTransaction()};
+		const auto artists {Artist::find(session, Artist::FindParameters {}.setRelease(release.getId()))};
+		EXPECT_EQ(artists.results.size(), 0);
+	}
+
+	{
+		auto transaction {session.createUniqueTransaction()};
+		TrackArtistLink::create(session, track.get(), artist.get(), TrackArtistLinkType::Artist);
+	}
+
+	{
+		auto transaction {session.createSharedTransaction()};
+		const auto artists {Artist::find(session, Artist::FindParameters {}.setRelease(release.getId()))};
+		EXPECT_EQ(artists.results.size(), 0);
+	}
+
+	{
+		auto transaction {session.createUniqueTransaction()};
+		track.get().modify()->setRelease(release.get());
+	}
+
+	{
+		auto transaction {session.createSharedTransaction()};
+		const auto artists {Artist::find(session, Artist::FindParameters {}.setRelease(release.getId()))};
+		ASSERT_EQ(artists.results.size(), 1);
+		EXPECT_EQ(artists.results.front(), artist.getId());
+	}
 }