[#4391] Add a Deliverable filter to the issues list.

lib/redmine_contracts/patches/project_patch.rb

@@ -7,8 +7,8 @@ module RedmineContracts
         base.send(:include, InstanceMethods)
         base.class_eval do
           unloadable
-
           has_many :contracts
+          has_many :deliverables, :through => :contracts
         end
       end
 

lib/redmine_contracts/patches/query_patch.rb

@@ -0,0 +1,40 @@
+module RedmineContracts
+  module Patches
+    module QueryPatch
+      def self.included(base)
+        base.extend(ClassMethods)
+
+        base.send(:include, InstanceMethods)
+        base.class_eval do
+          unloadable
+
+          alias_method_chain :available_filters, :deliverable
+        end
+      end
+
+      module ClassMethods
+      end
+
+      module InstanceMethods
+        # TODO: Should have an API on the Redmine core for this
+        def available_filters_with_deliverable
+          @available_filters = available_filters_without_deliverable
+
+          if project
+            deliverable_filters = {
+              "deliverable_id" => {
+                :type => :list_optional,
+                :order => 15,
+                :values => project.deliverables.by_title.collect { |d| [d.title, d.id.to_s] }
+              }
+            }
+            return @available_filters.merge(deliverable_filters)
+          else
+            return @available_filters
+          end
+
+        end
+      end
+    end
+  end
+end