Post review modifications

- Don't use class variables.
- Use memoized class instance variables.
- Fix class reloading in development environment.

app/models/work_package/exporter/formatters.rb

@@ -1,19 +1,27 @@
 module WorkPackage::Exporter
   module Formatters
-    @@formatters = %i[default costs estimated_hours].map do |key|
-      Kernel.const_get("WorkPackage::Exporter::Formatters::#{key.to_s.camelize}")
+    def self.default_formatter_strings
+      @default_formatters_strings ||= %i[default costs estimated_hours].map do |key|
+        "WorkPackage::Exporter::Formatters::#{key.to_s.camelize}"
+      end
+    end
+
+    def self.all_formatter_strings
+      @all_formatter_strings ||= default_formatter_strings
     end
 
     def self.all
-      @@formatters
+      all_formatter_strings.each do |formatter_string|
+        Kernel.const_get(formatter_string)
+      end
     end
 
     def self.keys
       all.map(&:key)
     end
 
-    def self.register(clz)
-      @@formatters << clz
+    def self.register(class_string)
+      @all_formatter_strings = all_formatter_strings + [class_string]
     end
 
     ##

app/models/work_package/pdf_export/work_package_list_to_pdf.rb

@@ -317,10 +317,4 @@ class WorkPackage::PDFExport::WorkPackageListToPdf < WorkPackage::Exporter::Base
       false
     end
   end
-
-  def make_bcf_thumbnail_field_value(work_package)
-    # A BCF viewpoint must have a snapshot. So it's safe to check for
-    # viewpoint existence only.
-    work_package.bcf_issue.viewpoints.any? ? 'X' : ''
-  end
 end

modules/bim/lib/open_project/bim/engine.rb

@@ -213,7 +213,7 @@ module OpenProject::Bim
     config.to_prepare do
       ::WorkPackage::Exporter
         .register_for_list(:bcf, OpenProject::Bim::BcfXml::Exporter)
-      ::WorkPackage::Exporter::Formatters.register(OpenProject::Bim::WorkPackage::Exporter::Formatters::BcfThumbnail)
+      ::WorkPackage::Exporter::Formatters.register("OpenProject::Bim::WorkPackage::Exporter::Formatters::BcfThumbnail")
 
       ::Queries::Register.filter ::Query, ::Bim::Queries::WorkPackages::Filter::BcfIssueAssociatedFilter
       ::Queries::Register.column ::Query, ::Bim::Queries::WorkPackages::Columns::BcfThumbnailColumn