Add ShortName to rulesets

osu.Game.Rulesets.Catch/CatchRuleset.cs

@@ -93,6 +93,8 @@ public override IEnumerable<Mod> GetModsFor(ModType type)
 
         public override string Description => "osu!catch";
 
+        public override string ShortName => "fruits";
+
         public override Drawable CreateIcon() => new SpriteIcon { Icon = FontAwesome.fa_osu_fruits_o };
 
         public override DifficultyCalculator CreateDifficultyCalculator(Beatmap beatmap, Mod[] mods = null) => new CatchDifficultyCalculator(beatmap);

osu.Game.Rulesets.Mania/ManiaRuleset.cs

@@ -105,6 +105,8 @@ public override IEnumerable<Mod> GetModsFor(ModType type)
 
         public override string Description => "osu!mania";
 
+        public override string ShortName => "mania";
+
         public override Drawable CreateIcon() => new SpriteIcon { Icon = FontAwesome.fa_osu_mania_o };
 
         public override DifficultyCalculator CreateDifficultyCalculator(Beatmap beatmap, Mod[] mods = null) => new ManiaDifficultyCalculator(beatmap);

osu.Game.Rulesets.Osu/OsuRuleset.cs

@@ -124,6 +124,8 @@ public override IEnumerable<Mod> GetModsFor(ModType type)
 
         public override string Description => "osu!";
 
+        public override string ShortName => "osu";
+
         public override SettingsSubsection CreateSettings() => new OsuSettings();
 
         public override int LegacyID => 0;

osu.Game.Rulesets.Taiko/TaikoRuleset.cs

@@ -95,6 +95,8 @@ public override IEnumerable<Mod> GetModsFor(ModType type)
 
         public override string Description => "osu!taiko";
 
+        public override string ShortName => "taiko";
+
         public override Drawable CreateIcon() => new SpriteIcon { Icon = FontAwesome.fa_osu_taiko_o };
 
         public override DifficultyCalculator CreateDifficultyCalculator(Beatmap beatmap, Mod[] mods = null) => new TaikoDifficultyCalculator(beatmap);

osu.Game/Beatmaps/DummyWorkingBeatmap.cs

@@ -63,6 +63,8 @@ public override RulesetContainer CreateRulesetContainerWith(WorkingBeatmap beatm
 
                 public override string Description => "dummy";
 
+                public override string ShortName => "dummy";
+
                 public DummyRuleset(RulesetInfo rulesetInfo)
                     : base(rulesetInfo)
                 {

osu.Game/Rulesets/Ruleset.cs

@@ -66,6 +66,11 @@ protected Ruleset(RulesetInfo rulesetInfo)
         /// </summary>
         public virtual int LegacyID => -1;
 
+        /// <summary>
+        /// A unique short name to reference this ruleset in online requests.
+        /// </summary>
+        public abstract string ShortName { get; }
+
         /// <summary>
         /// A list of available variant ids.
         /// </summary>