Allow setting accountable to user clicking custom action

app/models/custom_actions/actions/responsible.rb

@@ -27,16 +27,20 @@
 #++
 
 class CustomActions::Actions::Responsible < CustomActions::Actions::Base
-  include CustomActions::Actions::Strategies::Associated
+  include CustomActions::Actions::Strategies::MeAssociated
 
-  def associated
+  def available_principles
     User
       .not_locked
       .select(:id, :firstname, :lastname, :type)
       .ordered_by_name
       .map { |u| [u.id, u.name] }
   end
 
+  def apply(work_package)
+    work_package.responsible_id = transformed_value(values.first)
+  end
+
   def required?
     false
   end

spec/models/custom_actions/actions/responsible_spec.rb

@@ -25,8 +25,8 @@
 #
 # See COPYRIGHT and LICENSE files for more details.
 #++
-require 'spec_helper'
-require_relative '../shared_expectations'
+require "spec_helper"
+require_relative "../shared_expectations"
 
 RSpec.describe CustomActions::Actions::Responsible do
   let(:key) { :responsible }
@@ -39,20 +39,71 @@
       .to receive_message_chain(:not_locked, :select, :ordered_by_name)
             .and_return(principals)
 
-    [{ value: nil, label: '-' },
+    [{ value: nil, label: "-" },
+     { value: "current_user", label: "(Assign to executing user)" },
      { value: principals.first.id, label: principals.first.name },
      { value: principals.last.id, label: principals.last.name }]
   end
 
-  it_behaves_like 'base custom action'
-  it_behaves_like 'associated custom action' do
-    describe '#allowed_values' do
-      it 'is the list of all users and groups' do
+  it_behaves_like "base custom action"
+  it_behaves_like "associated custom action" do
+    describe "#allowed_values" do
+      it "is the list of all users and groups" do
         allowed_values
 
         expect(instance.allowed_values)
           .to eql(allowed_values)
       end
     end
   end
+
+  describe "current_user special value" do
+    let(:work_package) { build_stubbed(:work_package) }
+    let(:user) { build_stubbed(:user) }
+
+    subject { described_class.new }
+
+    before do
+      subject.values = ["current_user"]
+    end
+
+    it "can set the value" do
+      expect(subject).to have_me_value
+    end
+
+    it "includes the value in available_values" do
+      expect(subject.associated)
+        .to include([subject.current_user_value_key, I18n.t("custom_actions.actions.assigned_to.executing_user_value")])
+    end
+
+    context "when logged in" do
+      before do
+        login_as user
+      end
+
+      it "returns nil for the current user id" do
+        subject.apply work_package
+        expect(work_package.responsible_id).to eq(user.id)
+      end
+
+      it "validates the me value when executing" do
+        errors = ActiveModel::Errors.new(CustomAction.new)
+        subject.validate errors
+        expect(errors.symbols_for(:actions)).to be_empty
+      end
+    end
+
+    context "when not logged in" do
+      it "returns nil for the current user id" do
+        subject.apply work_package
+        expect(work_package.responsible_id).to be_nil
+      end
+
+      it "validates the me value when executing" do
+        errors = ActiveModel::Errors.new(CustomAction.new)
+        subject.validate errors
+        expect(errors.symbols_for(:actions)).to include :not_logged_in
+      end
+    end
+  end
 end