Add tax category edit and update actions

This completes the feature for editing an existing tax category.

admin/app/controllers/solidus_admin/tax_categories_controller.rb

@@ -4,6 +4,8 @@ module SolidusAdmin
   class TaxCategoriesController < SolidusAdmin::BaseController
     include SolidusAdmin::ControllerHelpers::Search
 
+    before_action :find_tax_category, only: %i[edit update]
+
     def new
       @tax_category = Spree::TaxCategory.new
 
@@ -14,6 +16,16 @@ def new
       end
     end
 
+    def edit
+      @tax_category = Spree::TaxCategory.find(params[:id])
+
+      set_index_page
+
+      respond_to do |format|
+        format.html { render component('tax_categories/edit').new(page: @page, tax_category: @tax_category) }
+      end
+    end
+
     def create
       @tax_category = Spree::TaxCategory.new(tax_category_params)
 
@@ -43,6 +55,31 @@ def create
       end
     end
 
+    def update
+      if @tax_category.update(tax_category_params)
+        respond_to do |format|
+          flash[:notice] = t('.success')
+
+          format.html do
+            redirect_to solidus_admin.tax_categories_path, status: :see_other
+          end
+
+          format.turbo_stream do
+            render turbo_stream: '<turbo-stream action="refresh" />'
+          end
+        end
+      else
+        set_index_page
+
+        respond_to do |format|
+          format.html do
+            page_component = component('tax_categories/edit').new(page: @page, tax_category: @tax_category)
+            render page_component, status: :unprocessable_entity
+          end
+        end
+      end
+    end
+
     def index
       set_index_page
 
@@ -67,6 +104,10 @@ def load_tax_category
       authorize! action_name, @tax_category
     end
 
+    def find_tax_category
+      @tax_category = Spree::TaxCategory.find(params[:id])
+    end
+
     def tax_category_params
       params.require(:tax_category).permit(:name, :description, :is_default, :tax_code)
     end

admin/config/locales/tax_categories.en.yml

@@ -6,3 +6,5 @@ en:
         success: "Tax categories were successfully removed."
       create:
         success: "Tax category was successfully created."
+      update:
+        success: "Tax category was successfully updated."