The lists: Backlog, and Done cannot be destroyed

2 files changed, 9 insertions, 1 deletions

diff --git a/app/models/board.rb b/app/models/board.rb
index d6358fb15e8..3240c4bede3 100644
--- a/app/models/board.rb
+++ b/app/models/board.rb
@@ -1,7 +1,7 @@
 class Board < ActiveRecord::Base
   belongs_to :project
 
-  has_many :lists, -> { order(:list_type, :position) }, dependent: :destroy
+  has_many :lists, -> { order(:list_type, :position) }, dependent: :delete_all
 
   validates :project, presence: true
 end
diff --git a/app/models/list.rb b/app/models/list.rb
index b4fdab7893a..f2a59d18c46 100644
--- a/app/models/list.rb
+++ b/app/models/list.rb
@@ -10,7 +10,15 @@ class List < ActiveRecord::Base
 
   delegate :name, to: :label, allow_nil: true, prefix: true
 
+  before_destroy :can_be_destroyed, unless: :label?
+
   def title
     label? ? label_name : list_type.humanize
   end
+
+  private
+
+  def can_be_destroyed
+    false
+  end
 end