1 files changed, 39 insertions, 3 deletions
diff --git a/app/finders/issuable_finder.rb b/app/finders/issuable_finder.rb
index f1df6832bf6..f00f3f709e9 100644
--- a/app/finders/issuable_finder.rb
+++ b/app/finders/issuable_finder.rb
@@ -39,6 +39,7 @@ class IssuableFinder
     items = by_assignee(items)
     items = by_author(items)
     items = by_label(items)
+    items = by_due_date(items)
     sort(items)
   end
 
@@ -117,7 +118,7 @@ class IssuableFinder
   end
 
   def filter_by_no_label?
-    labels? && params[:label_name] == Label::None.title
+    labels? && params[:label_name].include?(Label::None.title)
   end
 
   def labels
@@ -271,7 +272,6 @@ class IssuableFinder
         items = items.without_label
       else
         items = items.with_label(label_names)
-
         if projects
           items = items.where(labels: { project_id: projects })
         end
@@ -281,8 +281,44 @@ class IssuableFinder
     items
   end
 
+  def by_due_date(items)
+    if due_date?
+      if filter_by_no_due_date?
+        items = items.without_due_date
+      elsif filter_by_overdue?
+        items = items.due_before(Date.today)
+      elsif filter_by_due_this_week?
+        items = items.due_between(Date.today.beginning_of_week, Date.today.end_of_week)
+      elsif filter_by_due_this_month?
+        items = items.due_between(Date.today.beginning_of_month, Date.today.end_of_month)
+      end
+    end
+
+    items
+  end
+
+  def filter_by_no_due_date?
+    due_date? && params[:due_date] == Issue::NoDueDate.name
+  end
+
+  def filter_by_overdue?
+    due_date? && params[:due_date] == Issue::Overdue.name
+  end
+
+  def filter_by_due_this_week?
+    due_date? && params[:due_date] == Issue::DueThisWeek.name
+  end
+
+  def filter_by_due_this_month?
+    due_date? && params[:due_date] == Issue::DueThisMonth.name
+  end
+
+  def due_date?
+    params[:due_date].present? && klass.column_names.include?('due_date')
+  end
+
   def label_names
-    params[:label_name].split(',')
+    params[:label_name].is_a?(String) ? params[:label_name].split(',') : params[:label_name]
   end
 
   def current_user_related?