list attachments of a WP via APIv3

lib/api/v3/attachments/attachment_collection_representer.rb

@@ -0,0 +1,38 @@
+#-- encoding: UTF-8
+#-- copyright
+# OpenProject is a project management system.
+# Copyright (C) 2012-2015 the OpenProject Foundation (OPF)
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License version 3.
+#
+# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
+# Copyright (C) 2006-2013 Jean-Philippe Lang
+# Copyright (C) 2010-2013 the ChiliProject Team
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+# See doc/COPYRIGHT.rdoc for more details.
+#++
+
+module API
+  module V3
+    module Attachments
+      class AttachmentCollectionRepresenter < ::API::Decorators::Collection
+        element_decorator ::API::V3::Attachments::AttachmentRepresenter
+      end
+    end
+  end
+end

lib/api/v3/attachments/attachments_by_work_package_api.rb

@@ -0,0 +1,47 @@
+#-- copyright
+# OpenProject is a project management system.
+# Copyright (C) 2012-2015 the OpenProject Foundation (OPF)
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License version 3.
+#
+# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
+# Copyright (C) 2006-2013 Jean-Philippe Lang
+# Copyright (C) 2010-2013 the ChiliProject Team
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+# See doc/COPYRIGHT.rdoc for more details.
+#++
+
+require 'api/v3/attachments/attachment_collection_representer'
+
+module API
+  module V3
+    module Attachments
+      class AttachmentsByWorkPackageAPI < ::API::OpenProjectAPI
+        resources :attachments do
+          get do
+            self_path = api_v3_paths.attachments_by_work_package(@work_package.id)
+            attachments = @work_package.attachments
+            AttachmentCollectionRepresenter.new(attachments,
+                                                attachments.count,
+                                                self_path)
+          end
+        end
+      end
+    end
+  end
+end

lib/api/v3/utilities/path_helper.rb

@@ -50,6 +50,10 @@ module API
             "#{root_path}attachments/#{id}"
           end
 
+          def self.attachments_by_work_package(id)
+            "#{work_package(id)}/attachments"
+          end
+
           def self.available_assignees(project_id)
             "#{project(project_id)}/available_assignees"
           end

lib/api/v3/work_packages/work_packages_api.rb

@@ -156,6 +156,7 @@ module API
             mount ::API::V3::WorkPackages::WatchersAPI
             mount ::API::V3::Relations::RelationsAPI
             mount ::API::V3::WorkPackages::Form::FormAPI
+            mount ::API::V3::Attachments::AttachmentsByWorkPackageAPI
           end
 
           mount ::API::V3::WorkPackages::Schema::WorkPackageSchemasAPI

spec/lib/api/v3/utilities/path_helper_spec.rb

@@ -63,6 +63,14 @@ describe ::API::V3::Utilities::PathHelper do
     it { is_expected.to eql('/attachments/1') }
   end
 
+  describe '#attachments_by_work_package' do
+    subject { helper.attachments_by_work_package 1 }
+
+    it_behaves_like 'api v3 path'
+
+    it { is_expected.to eql('/api/v3/work_packages/1/attachments') }
+  end
+
   describe '#available_assignees' do
     subject { helper.available_assignees 42 }