From 2f2fe392d1f8ad599b94952e4608ce5dd1c69c42 Mon Sep 17 00:00:00 2001
From: Dan Barber <dan@danbarber.me>
Date: Mon, 13 Jan 2014 08:32:45 +0000
Subject: [PATCH 1/3] Add find_by_discid method.

---
 lib/musicbrainz/models/release.rb | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/lib/musicbrainz/models/release.rb b/lib/musicbrainz/models/release.rb
index 8262838..0efc237 100644
--- a/lib/musicbrainz/models/release.rb
+++ b/lib/musicbrainz/models/release.rb
@@ -10,7 +10,7 @@ module MusicBrainz
     field :asin, String
     field :barcode, String
     field :quality, String
-    
+
     def tracks
       @tracks ||= client.load(:release, { id: id, inc: [:recordings, :media], limit: 100 }, {
         binding: :release_tracks,
@@ -26,6 +26,13 @@ module MusicBrainz
           create_model: :release
         })
       end
+
+      def find_by_discid(id)
+        client.load(:discid, { id: id, inc: [:media, :release_groups] }, {
+          binding: :release_group_releases,
+          create_models: :release
+        })
+      end
     end
   end
 end

From c65b270799f8d6c263f3b7fec2b5aa348957fbfd Mon Sep 17 00:00:00 2001
From: Dan Barber <dan@new-bamboo.co.uk>
Date: Mon, 13 Jan 2014 10:23:42 +0000
Subject: [PATCH 2/3] Add bindings for discid/release-list.

---
 lib/musicbrainz.rb                          |  1 +
 lib/musicbrainz/bindings/discid_releases.rb | 13 +++++++++++++
 lib/musicbrainz/models/release.rb           |  4 ++--
 3 files changed, 16 insertions(+), 2 deletions(-)
 create mode 100644 lib/musicbrainz/bindings/discid_releases.rb

diff --git a/lib/musicbrainz.rb b/lib/musicbrainz.rb
index 9a01624..cbc3049 100644
--- a/lib/musicbrainz.rb
+++ b/lib/musicbrainz.rb
@@ -24,6 +24,7 @@ require "musicbrainz/models/track"
 require "musicbrainz/bindings/artist"
 require "musicbrainz/bindings/artist_search"
 require "musicbrainz/bindings/artist_release_groups"
+require "musicbrainz/bindings/discid_releases"
 require "musicbrainz/bindings/relations"
 require "musicbrainz/bindings/release_group"
 require "musicbrainz/bindings/release_group_search"
diff --git a/lib/musicbrainz/bindings/discid_releases.rb b/lib/musicbrainz/bindings/discid_releases.rb
new file mode 100644
index 0000000..1210d32
--- /dev/null
+++ b/lib/musicbrainz/bindings/discid_releases.rb
@@ -0,0 +1,13 @@
+module MusicBrainz
+  module Bindings
+    module DiscidReleases
+      def parse(xml)
+        xml.xpath('./disc/release-list/release').map do |xml|
+          MusicBrainz::Bindings::Release.parse(xml)
+        end
+      end
+
+      extend self
+    end
+  end
+end
diff --git a/lib/musicbrainz/models/release.rb b/lib/musicbrainz/models/release.rb
index 0efc237..9f49133 100644
--- a/lib/musicbrainz/models/release.rb
+++ b/lib/musicbrainz/models/release.rb
@@ -28,8 +28,8 @@ module MusicBrainz
       end
 
       def find_by_discid(id)
-        client.load(:discid, { id: id, inc: [:media, :release_groups] }, {
-          binding: :release_group_releases,
+        client.load(:discid, { id: id }, {
+          binding: :discid_releases,
           create_models: :release
         })
       end

From 97b0c50073fbf1aca5654130af1750020b74306d Mon Sep 17 00:00:00 2001
From: Dan Barber <dan@new-bamboo.co.uk>
Date: Mon, 13 Jan 2014 10:52:27 +0000
Subject: [PATCH 3/3] Add spec for releases by discid.

---
 spec/models/release_spec.rb | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/spec/models/release_spec.rb b/spec/models/release_spec.rb
index 066d09c..9654fb0 100644
--- a/spec/models/release_spec.rb
+++ b/spec/models/release_spec.rb
@@ -35,4 +35,12 @@ describe MusicBrainz::Release do
     tracks.first.title.should == "Empire"
     tracks.first.length.should == 233013
   end
+
+  it "gets a list of matching releases for a discid" do
+    releases = MusicBrainz::Release.find_by_discid("pmzhT6ZlFiwSRCdVwV0eqire5_Y-")
+    releases.length.should == 2
+    releases.first.id.should == "7a31cd5f-6a57-4fca-a731-c521df1d3b78"
+    releases.first.title.should == "Kveikur"
+    releases.first.asin.should == "B00C1GBOU6"
+  end
 end