field name alternatives

[PhilWaldmann]

Hi,

thanks for this awesome library.
I saw that it's possible to define an alias for a field. Is it possible to have alternative input field names for a single field?

for example:

schema = %{
  reference_no: [type: :string, alternatives: [:referenceNo, :referenceno]]
}

Tarams.cast(%{"referenceNo": "1234"}, schema)
# {:ok, %{reference_no: "1234"}}
Tarams.cast(%{"referenceno": "1234"}, schema)
# {:ok, %{reference_no: "1234"}}
Tarams.cast(%{"reference_no": "1234"}, schema)
# {:ok, %{reference_no: "1234"}}

[bluzky]

HI @PhilWaldmann, sorry for late response.
Tarams provide from: option, but it limit to one alias.

schema = %{
  reference_no: [type: :string, from: :referenceNo]
}

Tarams.cast(%{"referenceNo": "1234"}, schema)

[PhilWaldmann]

Hi @bluzky thanks. Already found it in the docs.
Would you be interested in a PR to have alternative input names that map to a single field (like in my example above)? There are definitely some edge cases to consider and I haven't looked at Taram's code in detail if it's even possible without changing too much.
Just let me know if you think that it makes sense. I'm happy to contribute!

[bluzky]

Hi, I don't think multiple alias is common case, because keys in params or json responses are fixed in most cases