Load struct given its name from string

Module name in elixir are atoms with the :"Elixir." prefix, so :"Elixir.Mystruct5" == Mystruct5.

And i think it’s better to use String.to_existing_atom/1, just in case

Works perfectly.

Thanks! @LostKobrakai @dmitrykleymenov

Maybe you should use Module.safe_concat([your_string]) for this? It will fail with ArgumentError if the module doesn’t exist.

Consider writing this out explicitly, unless there are a LOT of Mystructs:

def name_to_module(name) do
  case name do
    "Mystruct1" -> Mystruct1
    "Mysturct3" -> Mystruct3 # NOTE: client sends this one spelled wrong and won't change it
  end
end

Advantages:

• very clear exactly which modules this could return
• easy to add aliases / typo-corrections

Downsides:

• more typing when adding a new struct

Nice improvement, thanks @Nicd.

@al2o3cr, yes, I also prefer to be explicit. In this case

• the input is not coming from the user but from a generated code so I expect no mispelling happening here.
• the idea is to keep the same code working and don’t touch it as that library grows with more structs names, it’s a bit of magic, but I was wondering how useful this approach would be.