FIX: Admins should be able to post short titles. This is especially important for when syndicating

a blog via the wordpress plugin into Discourse.

lib/validators/topic_title_length_validator.rb

@@ -1,12 +1,21 @@
 class TopicTitleLengthValidator < ActiveModel::EachValidator
 
   def validate_each(record, attribute, value)
-    if record.private_message?
-      private_message_title_validator = ActiveModel::Validations::LengthValidator.new({attributes: :title, in: SiteSetting.private_message_title_length, allow_blank: true})
-      private_message_title_validator.validate_each(record, attribute, value)
+    title_validator(record).validate_each(record, attribute, value)
+  end
+
+  private
+
+    def title_validator(record)
+      length_range = if record.user.try(:admin?)
+                       1..SiteSetting.max_topic_title_length
+                     elsif record.private_message?
+                       SiteSetting.private_message_title_length
                      else
-      topic_title_validator = ActiveModel::Validations::LengthValidator.new({attributes: :title, in: SiteSetting.topic_title_length, allow_blank: true})
-      topic_title_validator.validate_each(record, attribute, value)
+                       SiteSetting.topic_title_length
                      end
+
+      ActiveModel::Validations::LengthValidator.new({attributes: :title, in: length_range, allow_blank: true})
     end
+
 end

spec/models/topic_spec.rb

@@ -69,6 +69,20 @@ describe Topic do
     end
   end
 
+  context 'admin topic title' do
+    let(:admin) { Fabricate(:admin) }
+
+    it 'allows really short titles' do
+      pm = Fabricate.build(:private_message_topic, user: admin, title: 'a')
+      expect(pm).to be_valid
+    end
+
+    it 'but not blank' do
+      pm = Fabricate.build(:private_message_topic, title: '')
+      expect(pm).to_not be_valid
+    end
+  end
+
   context 'topic title uniqueness' do
 
     let!(:topic) { Fabricate(:topic) }