json - Elixir: How to convert a keyword list to a map? -

i have keyword list of ecto changeset errors i'd convert map poison json parser can correctly output list of validation errors in json format.

so list of errors follows:

[:topic_id, "can't blank", :created_by, "can't blank"]

...and i'd map of errors so:

%{topic_id: "can't blank", created_by: "can't blank"}

alternatively, if convert list of strings, use well.

the best way accomplish either of these tasks?

what have there isn't keyword list, list every odd element representing key , every element representing value.

the difference is:

[:topic_id, "can't blank", :created_by, "can't blank"] # list [topic_id: "can't blank", created_by: "can't blank"]   # keyword list

a keyword list can turned map using enum.into/2

enum.into([topic_id: "can't blank", created_by: "can't blank"], %{})

since data structure list, can convert using enum.chunk/2 , enum.reduce/3

[:topic_id, "can't blank", :created_by, "can't blank"] |> enum.chunk(2) |> enum.reduce(%{}, fn ([key, val], acc) -> map.put(acc, key, val) end)

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