Speed up nested #simple_fields_for usage by a considerable amount

Exceptions are slow due to generating backtraces - and then when other debugging gems (such as did_you mean, which are included with Ruby and Rails these days) get involved it resulted in excessive Object allocation.
Sgtpluck · Feb 20, 2023 · ff3903f · ff3903f
1 parent 0ef4a58
commit ff3903f
Showing 1 changed file with 1 addition and 6 deletions.
diff --git a/lib/simple_form/form_builder.rb b/lib/simple_form/form_builder.rb
@@ -672,12 +672,7 @@ def mapping_override(klass)
 
     def attempt_mapping(mapping, at)
       return if SimpleForm.inputs_discovery == false && at == Object
-
-      begin
-        at.const_get(mapping)
-      rescue NameError => e
-        raise if e.message !~ /#{mapping}$/
-      end
+      return at.const_get(mapping) if at.const_defined?(mapping)
     end
 
     def attempt_mapping_with_custom_namespace(input_name)