Add next page path method with conditional routing

app/controllers/case_logs_controller.rb

@@ -51,6 +51,20 @@ class CaseLogsController < ApplicationController
     end
   end
 
+  def self.get_next_page_path(form, previous_page, responses_for_page={})
+    questions_for_page = form.questions_for_page(previous_page)
+    questions_for_page.each do |question, content| 
+      if(content.key?("conditional_route_to"))
+        content["conditional_route_to"].each do |route, answer|
+          if responses_for_page[question.to_sym] == answer
+            return "case_log_#{route.to_s}_path"
+          end
+        end
+      end
+    end
+    form.next_page_redirect_path(previous_page)
+  end
+
   def check_answers
     form = @@form_handler.get_form("2021_2022")
     @case_log = CaseLog.find(params[:case_log_id])

spec/controllers/case_logs_controller_spec.rb

@@ -122,5 +122,50 @@ RSpec.describe CaseLogsController, type: :controller do
         expect(case_log.tenant_code).to eq(tenant_code)
       end
     end
+
+    context "conditional routing" do
+      let(:case_log_form_conditional_question_yes_params) do
+        {
+          pregnancy: "Yes",
+          previous_page: "conditional_question",
+        }
+      end
+
+      let(:case_log_form_conditional_question_no_params) do
+        {
+          pregnancy: "No",
+          previous_page: "conditional_question",
+        }
+      end
+
+      it "routes to the appropriate conditional page based on the question answer of the current page" do
+        post :submit_form, params: { id: id, case_log: case_log_form_conditional_question_yes_params }
+        expect(response).to redirect_to("/case_logs/#{id}/conditional_question_yes_page")
+
+        post :submit_form, params: { id: id, case_log: case_log_form_conditional_question_no_params }
+        expect(response).to redirect_to("/case_logs/#{id}/conditional_question_no_page")
+      end
+    end
+  end
+
+  describe "get_next_page_path" do
+    let(:previous_page) { "net_income" }
+    let(:last_previous_page) { "housing_benefit" }
+    let(:previous_conditional_page) { "conditional_question" }
+    let(:form_handler) { FormHandler.instance }
+    let(:form) { form_handler.get_form("test_form") }
+    let(:responses_for_page) { { "pregnancy": "No" } }
+
+    it "returns a correct page path if there is no conditional routing" do
+      expect(CaseLogsController.get_next_page_path(form, previous_page)).to eq("case_log_net_income_uc_proportion_path")
+    end
+
+    it "returns a check answers page if previous page is the last page" do
+      expect(CaseLogsController.get_next_page_path(form, last_previous_page)).to eq("case_log_income_and_benefits_check_answers_path")
+    end
+
+    it "returns a correct page path if there is conditional routing" do
+      expect(CaseLogsController.get_next_page_path(form, previous_conditional_page, responses_for_page)).to eq("case_log_conditional_question_no_page_path")
+    end
   end
 end

spec/features/case_log_spec.rb

@@ -296,4 +296,19 @@ RSpec.describe "Test Features" do
       end
     end
   end
+
+  describe "conditional page routing" do
+    it "can route the user to a different page based on their answer on the current page" do
+      visit("case_logs/#{id}/conditional_question")
+      # using a question name that is already in the db to avoid
+      # having to add a new column to the db for this test
+      choose("case-log-pregnancy-yes-field") 
+      click_button("Save and continue")
+      expect(page).to have_current_path("/case_logs/#{id}/conditional_question_yes_page")
+      click_link(text: "Back")
+      choose("case-log-pregnancy-no-field")
+      click_button("Save and continue")
+      expect(page).to have_current_path("/case_logs/#{id}/conditional_question_no_page")
+    end
+  end 
 end

spec/fixtures/forms/test_form.json

@@ -235,6 +235,54 @@
               }
             }
           }
+        },
+        "conditional_question": {
+          "label": "Conditional question",
+          "pages": {
+            "conditional_question": {
+              "questions": {
+                "pregnancy": {
+                  "check_answer_label": "Has the condition been met?",
+                  "header": "Has the condition been met?",
+                  "type": "radio",
+                  "answer_options": {
+                    "0": "Yes",
+                    "1": "No"
+                  },
+                  "conditional_route_to": {
+                    "conditional_question_yes_page": "Yes",
+                    "conditional_question_no_page": "No"
+                  }
+                }
+              }
+            },
+            "conditional_question_yes_page": {
+              "questions": {
+                "conditional_question_yes_question": {
+                  "check_answer_label": "Has the next condition been met?",
+                  "header": "Has the next condition been met?",
+                  "type": "radio",
+                  "answer_options": {
+                    "0": "Yes",
+                    "1": "No"
+                  }
+                }
+              }
+            },
+            "conditional_question_no_page": {
+              "questions": {
+                "conditional_question_no_question": {
+                  "check_answer_label": "Has the condition not been met?",
+                  "header": "Has the next condition not been met?",
+                  "type": "radio",
+                  "answer_options": {
+                    "0": "Yes",
+                    "1": "No"
+                  }
+                }
+              }
+            }
+          }
         }
       }
     },