Allow projects to have many boards

app/models/project.rb

@@ -17,9 +17,6 @@ class Project < ActiveRecord::Base
 
   extend Gitlab::ConfigHelper
 
-  class BoardLimitExceeded < StandardError; end
-
-  NUMBER_OF_PERMITTED_BOARDS = 1
   UNKNOWN_IMPORT_URL = 'http://unknown.git'
 
   cache_markdown_field :description, pipeline: :description
@@ -64,7 +61,7 @@ class Project < ActiveRecord::Base
 
   has_one :push_rule, dependent: :destroy
   has_one :last_event, -> {order 'events.created_at DESC'}, class_name: 'Event', foreign_key: 'project_id'
-  has_many :boards, before_add: :validate_board_limit, dependent: :destroy
+  has_many :boards, dependent: :destroy
 
   # Project services
   has_many :services
@@ -1613,8 +1610,4 @@ class Project < ActiveRecord::Base
 
     shared_projects.any?
   end
-
-  def validate_board_limit(board)
-    raise BoardLimitExceeded, 'Number of permitted boards exceeded' if boards.size >= NUMBER_OF_PERMITTED_BOARDS
-  end
 end

spec/models/project_spec.rb

@@ -97,15 +97,6 @@ describe Project, models: true do
         end
       end
     end
-
-    describe '#boards' do
-      it 'raises an error when attempting to add more than one board to the project' do
-        subject.boards.build
-
-        expect { subject.boards.build }.to raise_error(Project::BoardLimitExceeded, 'Number of permitted boards exceeded')
-        expect(subject.boards.size).to eq 1
-      end
-    end
   end
 
   describe 'modules' do