Allow issues grouping by start and due dates (#13803).

git-svn-id: http://svn.redmine.org/redmine/trunk@17723 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/issue_query.rb

@@ -33,8 +33,8 @@ class IssueQuery < Query
     QueryColumn.new(:updated_on, :sortable => "#{Issue.table_name}.updated_on", :default_order => 'desc'),
     QueryColumn.new(:category, :sortable => "#{IssueCategory.table_name}.name", :groupable => true),
     QueryColumn.new(:fixed_version, :sortable => lambda {Version.fields_for_order_statement}, :groupable => true),
-    QueryColumn.new(:start_date, :sortable => "#{Issue.table_name}.start_date"),
-    QueryColumn.new(:due_date, :sortable => "#{Issue.table_name}.due_date"),
+    QueryColumn.new(:start_date, :sortable => "#{Issue.table_name}.start_date", :groupable => true),
+    QueryColumn.new(:due_date, :sortable => "#{Issue.table_name}.due_date", :groupable => true),
     QueryColumn.new(:estimated_hours, :sortable => "#{Issue.table_name}.estimated_hours", :totalable => true),
     QueryColumn.new(:total_estimated_hours,
       :sortable => "COALESCE((SELECT SUM(estimated_hours) FROM #{Issue.table_name} subtasks" +

test/functional/issues_controller_test.rb

@@ -333,6 +333,25 @@ class IssuesControllerTest < Redmine::ControllerTest
     assert_select 'tr.group span.count'
   end
 
+  def test_index_grouped_by_due_date
+    Issue.destroy_all
+    Issue.generate!(:due_date => '2018-08-10')
+    Issue.generate!(:due_date => '2018-08-10')
+    Issue.generate!
+
+    get :index, :params => {
+        :set_filter => 1,
+        :group_by => "due_date"
+      }
+    assert_response :success
+    assert_select 'tr.group span.name', :value => '2018-08-10' do
+      assert_select '~ span.count', value:'2'
+    end
+    assert_select 'tr.group span.name', :value => '(blank)' do
+      assert_select '~ span.count', value:'1'
+    end
+  end
+
   def test_index_with_query_grouped_by_list_custom_field
     get :index, :params => {
         :project_id => 1,