Shaping flat maps into nested maps with changing data inputs

[Eiji]

@dharmaraja

Would creating such a module for each request within the API be considered bloated or is there a simple interface through which can access an abstraction of such a parser

Nothing stops you from writing one generic module and each module for every of your APIs.

Also you can use metaprogramming like:

defmodule Example do
  use MyLib, flat_keys: @flat_keys ~w[occupation username]

  def parse("birthday", birthday) when is_integer(birthday) do
    naive = birthday |> DateTime.from_unix!() |> DateTime.to_naive()
    {~w[public_profile birthday], naive}
  end
end

Another way is to use an existing library like cozy_params:

Cozy_params - Provides Ecto-like API for casting and validating params

Hey, guys. Recently, I created a new package called cozy_params for casting and validating params. It is based on Ecto, and has Ecto-like API. An example integrating with Phoenix: defmodule DemoWeb.PageController do use DemoWeb, :controller import CozyParams action_fallback DemoWeb.FallbackController defparams :product_search do field :name, :string, required: true embeds_many :tags do field :name, :string, required: true end end def index(conn, params) do …

In above topic I have suggested an interesting ideas for source and sources options. Those are already approved and once implemented it would suit your case perfectly.

See also related GitHub issue:

Add new option - `:source`