Reminder note should not be more than 80 chars

app/contracts/reminders/base_contract.rb

@@ -28,6 +28,8 @@
 
 module Reminders
   class BaseContract < ::ModelContract
+    MAX_NOTE_CHARS_LENGTH = 80
+
     attribute :creator_id
     attribute :remindable_id
     attribute :remindable_type
@@ -39,6 +41,7 @@ class BaseContract < ::ModelContract
     validate :validate_remindable_exists
     validate :validate_manage_reminders_permissions
     validate :validate_remind_at_is_in_future
+    validate :validate_note_length
 
     def self.model = Reminder
 
@@ -62,6 +65,12 @@ def validate_remind_at_is_in_future
       end
     end
 
+    def validate_note_length
+      if model.note.present? && model.note.length > MAX_NOTE_CHARS_LENGTH
+        errors.add :note, :too_long, count: MAX_NOTE_CHARS_LENGTH
+      end
+    end
+
     def validate_manage_reminders_permissions
       return if errors.added?(:remindable, :not_found)
 

spec/contracts/reminders/base_contract_spec.rb

@@ -119,5 +119,19 @@
     end
   end
 
+  describe "validate note length" do
+    context "when note is too long" do
+      before { reminder.note = "a" * (described_class::MAX_NOTE_CHARS_LENGTH + 1) }
+
+      it_behaves_like "contract is invalid", note: :too_long
+    end
+
+    context "when note is within the limit" do
+      before { reminder.note = "a" * described_class::MAX_NOTE_CHARS_LENGTH }
+
+      it_behaves_like "contract is valid"
+    end
+  end
+
   include_examples "contract reuses the model errors"
 end