Update displayed_answer_options for period

app/models/form/lettings/questions/period.rb

@@ -26,4 +26,12 @@ class Form::Lettings::Questions::Period < ::Form::Question
   }.freeze
 
   QUESTION_NUMBER_FROM_YEAR = { 2023 => 92, 2024 => 91 }.freeze
+
+  def displayed_answer_options(log, _user)
+    return ANSWER_OPTIONS if log.managing_organisation.nil?
+
+    available_rent_periods = log.managing_organisation.rent_periods
+
+    ANSWER_OPTIONS.select { |key, _| available_rent_periods.include?(key.to_i) }
+  end
 end

spec/models/form/lettings/questions/period_spec.rb

@@ -8,4 +8,39 @@ RSpec.describe Form::Lettings::Questions::Period, type: :model do
   it "has the correct hint" do
     expect(question.hint_text).to eq("Select how often the household is charged. This may be different to how often they pay.")
   end
+
+  it "has correct answer options" do
+    expect(question.answer_options).to eq(
+      {
+        "2" => { "value" => "Every 2 weeks" },
+        "3" => { "value" => "Every 4 weeks" },
+        "4" => { "value" => "Every calendar month" },
+        "9" => { "value" => "Weekly for 46 weeks" },
+        "8" => { "value" => "Weekly for 47 weeks" },
+        "7" => { "value" => "Weekly for 48 weeks" },
+        "6" => { "value" => "Weekly for 49 weeks" },
+        "5" => { "value" => "Weekly for 50 weeks" },
+        "11" => { "value" => "Weekly for 51 weeks" },
+        "1" => { "value" => "Weekly for 52 weeks" },
+        "10" => { "value" => "Weekly for 53 weeks" },
+      },
+    )
+  end
+
+  context "when managing organisation has rent periods" do
+    let(:managing_organisation) { create(:organisation, skip_rent_period_creation: true) }
+    let(:log) { create(:lettings_log, managing_organisation:) }
+
+    before do
+      create(:organisation_rent_period, organisation: managing_organisation, rent_period: 3)
+    end
+
+    it "has correct displayed answer options" do
+      expect(question.displayed_answer_options(log, nil)).to eq(
+        {
+          "3" => { "value" => "Every 4 weeks" },
+        },
+      )
+    end
+  end
 end