Extract ga4_section onto facet subclasses

- credit to @floehopper

app/models/date_facet.rb

@@ -45,6 +45,10 @@ def query_params
     { key => date_values }
   end
 
+  def ga4_section
+    name
+  end
+
 private
 
   def value_fragments

app/models/facet.rb

@@ -55,6 +55,10 @@ def query_params
     {}
   end
 
+  def ga4_section
+    nil
+  end
+
 private
 
   def and_word_connectors

app/models/option_select_facet.rb

@@ -72,6 +72,10 @@ def closed_on_load_mobile?
     open_on_load?
   end
 
+  def ga4_section
+    name
+  end
+
 private
 
   def value_fragments

app/models/radio_facet.rb

@@ -30,6 +30,10 @@ def query_params
     { key => selected_value["value"] }
   end
 
+  def ga4_section
+    ""
+  end
+
 private
 
   def selected_value

app/models/radio_facet_for_multiple_filters.rb

@@ -37,6 +37,10 @@ def allowed_values
     @filter_hashes
   end
 
+  def ga4_section
+    ""
+  end
+
 private
 
   attr_reader :filter_hashes

app/models/taxon_facet.rb

@@ -43,6 +43,10 @@ def query_params
     }
   end
 
+  def ga4_section
+    "Topic"
+  end
+
 private
 
   def value_fragments

app/models/topical_facet.rb

@@ -6,4 +6,8 @@ def allowed_values
   def to_partial_path
     "option_select_facet"
   end
+
+  def ga4_section
+    name
+  end
 end

app/views/finders/_date_facet.html.erb

@@ -7,6 +7,6 @@
     aria_controls_id: "js-search-results-info",
     date_errors_to: date_facet.error_message_to(@search_query),
     date_errors_from: date_facet.error_message_from(@search_query),
-    data_attributes:  { "ga4-filter-parent": date_facet.name }
+    data_attributes:  { "ga4-filter-parent": date_facet.ga4_section }
   } %>
 </span>

app/views/finders/_option_select_facet.html.erb

@@ -7,7 +7,7 @@
 <% add_gem_component_stylesheet("checkboxes") %>
 
 <% cache_if option_select_facet.cacheable?, option_select_facet.cache_key do %>
-  <%= tag.div(data: { "ga4-change-category": "update-filter checkbox", "ga4-filter-parent": "", "ga4-section": option_select_facet.name }) do %>
+  <%= tag.div(data: { "ga4-change-category": "update-filter checkbox", "ga4-filter-parent": "", "ga4-section": option_select_facet.ga4_section }) do %>
     <%= render partial: 'govuk_publishing_components/components/option_select', locals: {
       :key => option_select_facet.key,
       :title => option_select_facet.name,

app/views/finders/_radio_facet.html.erb

@@ -1,4 +1,4 @@
-<%= tag.div(class: "facet-container", data: { "ga4-change-category": "update-filter radio", "ga4-section": "", "ga4-filter-parent": "" }) do %>
+<%= tag.div(class: "facet-container", data: { "ga4-change-category": "update-filter radio", "ga4-section": "", "ga4-filter-parent": radio_facet.ga4_section }) do %>
   <%= render "govuk_publishing_components/components/radio", {
     name: radio_facet.key,
     small: true,

app/views/finders/_taxon_facet.html.erb

@@ -1,7 +1,7 @@
 <% unless i_am_a_topic_page_finder %>
   <%= render "components/expander", {
     title: "Topic",
-    data_attributes: { "ga4-filter-parent": "Topic" }
+    data_attributes: { "ga4-filter-parent": taxon_facet.ga4_section }
   } do %>
     <div class="js-taxonomy-select" data-ga4-change-category="update-filter select" data-ga4-section="Topic">
       <%= render "govuk_publishing_components/components/select", {