Artweb-design adva cms

ExtensibleFormBuilder behaves weird when used with nested attributes (accept_nested_attributes_for :whatever):

<% f.fields_for(:nested_objects, object) do |ef| -%>

Assuming that object's class is Person, this tries to look up Person[nestedObjectsAttributes][0] and if not found tries to set a constant which results in an error being thrown because it's not a valid constant name.

Looking at the caller stack it seems like Rails somewhere injects its call to fields_for_with_nested_attributes before ExtensibleFormBuilder's own alias_method_chain:

["/path/to/project/vendor/plugins/adva_cms/lib/extensible_forms.rb:8:in `fields_for_nested_model'", "/path/to/project/vendor/rails/actionpack/lib/action_view/helpers/form_helper.rb:1010:in `fields_for_with_nested_attributes'", ...]

In the meantime, one can fix this by manually passing the default form builder via the :builder option but this should be investigated.