Display disc subtitles if it is set, even for single disc releases, fixes #492

src/libs/database/impl/Release.cpp

@@ -514,6 +514,11 @@ namespace lms::db
         return getArtists().size() > 1;
     }
 
+    bool Release::hasDiscSubtitle() const
+    {
+        return utils::fetchQuerySingleResult(session()->query<int>("SELECT EXISTS (SELECT 1 FROM track WHERE disc_subtitle IS NOT NULL AND disc_subtitle <> '' AND release_id = ?)").bind(getId()));
+    }
+
     std::size_t Release::getTrackCount() const
     {
         assert(session());

src/libs/database/include/database/Release.hpp

@@ -218,6 +218,7 @@ namespace lms::db
         std::vector<ObjectPtr<Artist>> getReleaseArtists() const { return getArtists(TrackArtistLinkType::ReleaseArtist); }
         bool hasVariousArtists() const;
         std::vector<pointer> getSimilarReleases(std::optional<std::size_t> offset = {}, std::optional<std::size_t> count = {}) const;
+        bool hasDiscSubtitle() const;
 
         template<class Action>
         void persist(Action& a)

src/lms/ui/explore/ReleaseView.cpp

@@ -321,7 +321,8 @@ namespace lms::ui
         const bool variousArtists{ release->hasVariousArtists() };
         const auto totalDisc{ release->getTotalDisc() };
         const std::size_t discCount{ release->getDiscCount() };
-        const bool isReleaseMultiDisc{ (discCount > 1) || (totalDisc && *totalDisc > 1) };
+        const bool hasDiscSubtitle{ release->hasDiscSubtitle() };
+        const bool useSubtitleContainers{ (discCount > 1) || (totalDisc && *totalDisc > 1) || hasDiscSubtitle };
 
         // Expect to be called in asc order
         std::map<std::size_t, Wt::WContainerWidget*> trackContainers;
@@ -392,8 +393,10 @@ namespace lms::ui
             const auto discNumber{ track->getDiscNumber() };
 
             Wt::WContainerWidget* container;
-            if (isReleaseMultiDisc && discNumber)
+            if (useSubtitleContainers && discNumber)
                 container = getOrAddDiscContainer(*discNumber, track->getDiscSubtitle());
+            else if (hasDiscSubtitle && !discNumber)
+                container = getOrAddDiscContainer(0, track->getDiscSubtitle());
             else
                 container = getOrAddNoDiscContainer();