Adding cms site wide banner single into site header

New single cms resource
New cms view component

Author: A-Wheeto

app/components/cms/site_wide_banner_component.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class Cms::SiteWideBannerComponent < ViewComponent::Base
+  def initialize(text_content:)
+    @text_content = text_content
+  end
+end

app/components/cms/site_wide_banner_component/site_wide_banner_component.html.erb

@@ -0,0 +1,3 @@
+<div class="cms-site-wide-banner-component">
+  <span class="govuk-body-s"><%= @text_content %></span>
+</div>

app/components/cms/site_wide_banner_component/site_wide_banner_component.scss

@@ -0,0 +1,9 @@
+.cms-site-wide-banner-component {
+  text-align: center;
+  background-color: $black;
+  padding: 10px;
+
+  span {
+    color: $white;
+  }
+}

app/controllers/application_controller.rb

@@ -5,6 +5,7 @@ class ApplicationController < ActionController::Base
 
   before_action :authenticate
   before_action :access_cms_header
+  before_action :access_cms_site_wide_notification
 
   def authenticate
     return unless ENV["BASIC_AUTH_PASSWORD"]
@@ -20,6 +21,12 @@ def access_cms_header
     @cms_header = nil
   end
 
+  def access_cms_site_wide_notification
+    @cms_site_wide_notification = Cms::Singles::SiteWideBanner.get
+  rescue ActiveRecord::RecordNotFound
+    @cms_site_wide_notification = nil
+  end
+
   def authenticate_user!
     redirect_to(helpers.create_account_url) unless current_user
   end

app/services/cms/models/meta/site_wide_banner.rb

@@ -0,0 +1,17 @@
+module Cms
+  module Models
+    module Meta
+      class SiteWideBanner
+        attr_reader :text_content
+
+        def initialize(text_content:)
+          @text_content = text_content
+        end
+
+        def render
+          Cms::SiteWideBannerComponent.new(text_content:)
+        end
+      end
+    end
+  end
+end

app/services/cms/providers/strapi/factories/model_factory.rb

@@ -23,7 +23,8 @@ module ModelFactory
             Models::TextBlock => :to_text_block,
             Models::TextBlockWithoutWrapper => :to_text_block_without_wrapper,
             Models::TextField => :to_text_field,
-            Models::WebPagePreview => :to_web_page_preview
+            Models::WebPagePreview => :to_web_page_preview,
+            Models::Meta::SiteWideBanner => :to_site_wide_banner
           }
 
           def self.process_model(mapping, all_data)
@@ -171,6 +172,10 @@ def self.to_simple_title(strapi_data, _all_data)
             {title: strapi_data}
           end
 
+          def self.to_site_wide_banner(strapi_data, _all_data)
+            {text_content: strapi_data}
+          end
+
           def self.to_slug(strapi_data, _all_data)
             {slug: strapi_data[:slug]}
           end

app/services/cms/providers/strapi/graphql_client.rb

@@ -34,6 +34,9 @@ def one(resource_class, resource_id = nil, preview: false, preview_key: nil)
           data = clean_aliases(response.original_hash)
 
           results = data[:data][resource_class.graphql_key.to_sym][:data]
+
+          return nil if resource_class.graphql_key.to_sym == :siteWideBanner && results.nil?
+
           raise ActiveRecord::RecordNotFound if results.empty?
 
           record = if resource_class.is_collection

app/services/cms/providers/strapi/queries/base_query.rb

@@ -23,7 +23,8 @@ class BaseQuery
             Models::TextBlock => SimpleField,
             Models::TextBlockWithoutWrapper => SimpleField,
             Models::TextField => SimpleField,
-            Models::WebPagePreview => WebPagePreview
+            Models::WebPagePreview => WebPagePreview,
+            Models::Meta::SiteWideBanner => SiteWideBanner
           }.freeze
 
           def initialize(collection_class, resource_filter = "slug")

app/services/cms/providers/strapi/queries/site_wide_banner.rb

@@ -0,0 +1,15 @@
+module Cms
+  module Providers
+    module Strapi
+      module Queries
+        class SiteWideBanner
+          def self.embed(name)
+            <<~GRAPHQL.freeze
+              textContent
+            GRAPHQL
+          end
+        end
+      end
+    end
+  end
+end

app/services/cms/resource.rb

@@ -68,6 +68,9 @@ def self.get(resource_id = nil, preview: false, preview_key: nil)
           client.one(self, resource_id)
         end
       end
+
+      return nil if data.nil? && resource_key.to_sym == :siteWideBanner
+
       new(**data)
     end
 

app/services/cms/singles/site_wide_banner.rb

@@ -0,0 +1,19 @@
+module Cms
+  module Singles
+    class SiteWideBanner < Resource
+      def self.resource_attribute_mappings
+        [
+          {model: Models::Meta::SiteWideBanner, key: :textContent}
+        ]
+      end
+
+      def self.cache_expiry
+        15.minutes
+      end
+
+      def self.graphql_key = "siteWideBanner"
+
+      def self.resource_key = "siteWideBanner"
+    end
+  end
+end

app/views/components/_header.html.erb

@@ -58,8 +58,10 @@
             <%= render model.render %>
           <% end %>
         <% end %>
-  
       </div>
     </nav>
   </div>
+  <% if @cms_site_wide_notification %>
+    <%= render @cms_site_wide_notification.data_models.first.render %>
+  <% end %>
 </header>