Add REST/JSON interface to access an issue's release note

app/controllers/release_notes_controller.rb

@@ -63,6 +63,17 @@ def update
     render_404
   end
 
+  def view
+    @issue = Issue.find(params[:issue_id])
+    @release_note = @issue.release_note
+    @format = release_notes_format_from_params
+    @content = ReleaseNotesGenerator.new(nil, @format).generate_single(@release_note)
+
+    respond_to do |format|
+      format.api {}
+    end
+  end
+
   def destroy
     release_note = ReleaseNote.find(params[:id])
     @issue = release_note.issue

app/models/release_notes_generator.rb

@@ -92,6 +92,14 @@ def generate
     generate_header << "\n" << generate_release_notes
   end
 
+  def generate_single(release_note)
+    str = format.start
+    str << "\n"
+    str << make_substitutions(format.each_issue, values_for_issue(release_note.issue))
+    str << "\n"
+    str << format.end
+  end
+
   private
   def generate_header
     make_substitutions(format.header, values_for_header(version))

app/views/release_notes/view.api.rsb

@@ -0,0 +1,7 @@
+api.release_note do
+  api.id @release_note.id
+  api.issue_id @release_note.issue_id
+  api.status @issue.release_notes_custom_value.value
+  api.text @release_note.text
+  api.formatted @content
+end

config/routes.rb

@@ -26,6 +26,12 @@
     :to => "release_notes#generate",
     :as => :generate_release_notes
 
+  get "/issues/:issue_id/release_notes",
+    :to => 'release_notes#view',
+    :as => :release_note_view,
+    defaults: { format: 'json' }
+
+
   patch 'release_notes_formats/preview',
     :to => 'release_notes_formats#preview',
     :as => :preview_release_notes_format