I have a custom content type congress, and inside the congress creation form, I want to allow the user to create and edit as many nodes as he wants of the custom type event.
How can I accomplish that? I've seen it's possible to create a field for selecting an existing node with node reference and node connect modules, but those do not allow me to create or edit nodes.
If you're not opposed to using Entity Reference module as instead of node reference, there's the Inline Entity Form module that does what you want:
Provides a widget for inline management (creation, modification, removal) of referenced entities. The primary use case is the parent -> children one (product display -> products, order -> line items, etc.), where the child entities are never managed outside the parent form.
