Intoduce Turbo-Frames!

app/controllers/case_logs_controller.rb

@@ -4,29 +4,19 @@ class CaseLogsController < ApplicationController
     @in_progress_case_logs = CaseLog.where(status: 0)
   end
 
+  # We don't have a dedicated non-editable show view
   def show
     @case_log = CaseLog.find(params[:id])
+    render :edit
   end
 
   def edit
     @case_log = CaseLog.find(params[:id])
-    render "case_logs/household/tenant_code"
   end
 
-  def update
-    @case_log = CaseLog.find(params[:id])
-    @case_log.update!(tenant_code: params[:case_log][:tenant_code]) if params[:case_log]
-    render_next_question(@case_log)
-  end
-
-private
-
-  def render_next_question(_case_log)
-    previous = params[:case_log].keys.first
-    next_question = {
-      "tenant_code" => "case_logs/household/tenant_age",
-      "tenant_age" => "case_logs/household/tenant_gender",
-    }[previous]
-    render next_question
-  end
+  # def update
+  #   @case_log = CaseLog.find(params[:id])
+  #   @case_log.update!(tenant_code: params[:case_log][:tenant_code]) if params[:case_log]
+  #   render_next_question(@case_log)
+  # end
 end

app/controllers/form_controller.rb

@@ -0,0 +1,24 @@
+class FormController < ApplicationController
+
+  FIRST_QUESTION_FOR_SUBSECTION = {
+    "Household characteristics" => "case_logs/household/tenant_code",
+  }
+
+  NEXT_QUESTION = {
+    "tenant_code" => "case_logs/household/tenant_age",
+    "tenant_age" => "case_logs/household/tenant_gender",
+    "tenant_gender" => "case_logs/household/tenant_ethnic_group",
+    "tenant_ethnic_group" => "case_logs/household/tenant_nationality"
+  }
+
+
+  def next_question
+    subsection = params[:subsection]
+    result = if subsection
+      FIRST_QUESTION_FOR_SUBSECTION[subsection]
+    else
+      NEXT_QUESTION[params[:previous_question]]
+    end
+    render result
+  end
+end

app/javascript/packs/application.js

@@ -9,6 +9,7 @@ import Rails from "@rails/ujs"
 import * as ActiveStorage from "@rails/activestorage"
 import "channels"
 import { initAll } from 'govuk-frontend'
+import "@hotwired/turbo-rails"
 
 
 Rails.start()

app/views/case_logs/_tasklist.html.erb

@@ -18,7 +18,7 @@
       <ul class="app-task-list__items">
         <% subsections.map do |subsection| %>
           <li class="app-task-list__item">
-            <%= link_to subsection, edit_case_log_path, class: "task-name" %>
+            <%= link_to subsection, form_path(subsection: subsection), class: "task-name" %>
             <strong class="govuk-tag govuk-tag--grey app-task-list__tag">Not started</strong>
           </li>
         <% end %>

app/views/case_logs/edit.html.erb

@@ -1,3 +1,4 @@
+<%= turbo_frame_tag "case_log_form" do %>
   <div class="govuk-grid-row">
     <div class="govuk-grid-column-two-thirds">
       <h1 class="govuk-heading-xl">Tasklist for log
@@ -14,3 +15,4 @@
 
     </div>
   </div>
+<% end %>

app/views/case_logs/household/tenant_age.html.erb

@@ -1,8 +1,11 @@
-  <%= form_with model: @case_log, method: "patch", builder: GOVUKDesignSystemFormBuilder::FormBuilder do |f| %>
+<%= turbo_frame_tag "case_log_form" do %>
+  <%= form_with action: '/form', method: "next_question", builder: GOVUKDesignSystemFormBuilder::FormBuilder do |f| %>
     <%= f.govuk_number_field :tenant_age,
             hint: { text: "More detail" },
             label: { text: "What is the tenant's age?", size: "l"},
             min: 0, max: 150, step: 1, width: 20
     %>
+    <%= f.hidden_field :previous_question, value: :tenant_age %>
     <%= f.govuk_submit "Save and continue" %>
   <% end %>
+<% end %>

app/views/case_logs/household/tenant_code.html.erb

@@ -1,8 +1,11 @@
-<%= form_with model: @case_log, method: "patch", builder: GOVUKDesignSystemFormBuilder::FormBuilder do |f| %>
+<%= turbo_frame_tag "case_log_form" do %>
+  <%= form_with action: '/form', method: "next_question", builder: GOVUKDesignSystemFormBuilder::FormBuilder do |f| %>
      <%= f.govuk_text_field :tenant_code,
           hint: { text: "More detail" },
           label: { text: "What is the tenant code?", size: "l"},
           width: 20
     %>
+    <%= f.hidden_field :previous_question, value: :tenant_code %>
     <%= f.govuk_submit "Save and continue"  %>
   <% end %>
+<% end %>

app/views/case_logs/household/tenant_gender.html.erb

@@ -5,7 +5,10 @@
       OpenStruct.new(id: 3, name: "Prefer not to say")
   ] %>
 
-  <%= form_with model: @case_log, method: "patch", builder: GOVUKDesignSystemFormBuilder::FormBuilder do |f| %>
+<%= turbo_frame_tag "case_log_form" do %>
+  <%= form_with action: '/form', method: "next_question", builder: GOVUKDesignSystemFormBuilder::FormBuilder do |f| %>
     <%= f.govuk_collection_radio_buttons :tenant_gender, genders, :id, :name, legend: { text: "Which of these best describes the tenant's gender identity?", size: "l" } %>
+    <%= f.hidden_field :previous_question, value: :tenant_gender %>
     <%= f.govuk_submit "Save and continue" %>
   <% end %>
+<% end %>

app/views/case_logs/show.html.erb

@@ -1,16 +0,0 @@
-<div class="govuk-grid-row">
-  <div class="govuk-grid-column-two-thirds">
-    <h1 class="govuk-heading-xl">Tasklist for log
-      <%= @case_log.id %></h1>
-
-    <h2 class="govuk-heading-s govuk-!-margin-bottom-2">This submission is
-      <%= @case_log.status %></h2>
-    <p class="govuk-body govuk-!-margin-bottom-7">You've completed 0 of 9 sections.</p>
-    <p class="govuk-body govuk-!-margin-bottom-7">
-      <a href="#">Skip to next incomplete section</a>
-    </p>
-
-    <%= render "tasklist" %>
-
-  </div>
-</div>

config/routes.rb

@@ -2,6 +2,8 @@ Rails.application.routes.draw do
   # For details on the DSL available within this file, see https://guides.rubyonrails.org/routing.html
   get "about", to: "about#index"
   get "/", to: "test#index"
+  get "form", to: "form#next_question"
+  post "form", to: "form#next_question"
 
   resources :case_logs
 end

package.json

@@ -2,7 +2,7 @@
   "name": "data-collector",
   "private": true,
   "dependencies": {
-    "@hotwired/stimulus": "^3.0.0-beta.1",
+    "@hotwired/stimulus": "^3.0.0-beta.2",
     "@hotwired/turbo": "^7.0.0-rc.3",
     "@hotwired/turbo-rails": "^7.0.0-rc.3",
     "@rails/actioncable": "^6.0.0",

yarn.lock

@@ -885,14 +885,14 @@
   resolved "https://registry.npmjs.org/@csstools/convert-colors/-/convert-colors-1.4.0.tgz"
   integrity sha512-5a6wqoJV/xEdbRNKVo6I4hO3VjyDq//8q2f9I6PBAvMesJHFauXDorcNCsr9RzvsZnaWi5NYCcfyqP1QeFHFbw==
 
-"@hotwired/stimulus@^3.0.0-beta.1":
-  version "3.0.0-beta.1"
-  resolved "https://registry.npmjs.org/@hotwired/stimulus/-/stimulus-3.0.0-beta.1.tgz"
-  integrity sha512-CrKSNYwwWJ1rCZiKgPADrLwRlmBQdvdbTgYlATjZP4MaU2SvGQ0wo1vsjjr7qzfEUvP/14GBnuQfMuhvHGrCNQ==
+"@hotwired/stimulus@^3.0.0-beta.2":
+  version "3.0.0-beta.2"
+  resolved "https://registry.yarnpkg.com/@hotwired/stimulus/-/stimulus-3.0.0-beta.2.tgz#64ca67af9cc473ca97bb99d98fee5bc08e4c3914"
+  integrity sha512-rp2XojlugD0mvqi3qbqM660PbjqS7hnq/8FYa7SK/DL2rvWDu0/Ka3KW8cyXtcB1RiVG4nX5Oh4oq3nmuDjENQ==
 
 "@hotwired/turbo-rails@^7.0.0-rc.3":
   version "7.0.0-rc.3"
-  resolved "https://registry.npmjs.org/@hotwired/turbo-rails/-/turbo-rails-7.0.0-rc.3.tgz"
+  resolved "https://registry.yarnpkg.com/@hotwired/turbo-rails/-/turbo-rails-7.0.0-rc.3.tgz#ebb088a0c9f6eed23a99b396c2ae59d0c57644e0"
   integrity sha512-J5NLTGSvlFW86pRxEm2WlYKdNeIkmQT9ZmIo1Rputj7BLymZYDCglaZ2vhMVFnQJ4qXEq4ttS3xeQt3cCG2Tdg==
   dependencies:
     "@hotwired/turbo" "^7.0.0-rc.3"