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maru
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0.2.5
REST-like API micro-framework for elixir inspired by grape.
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lib/maru/plugs/version.ex
defmodule Maru.Plugs.GetVersion do
@moduledoc """
This module is a plug, fetch `version` from connection and wirte to private variable `maru_version`.
"""
alias Plug.Conn
@doc false
def init(opts) do
opts
end
@doc false
def call(conn, :accept_version_header) do
vsn =
case Conn.get_req_header(conn, "accept-version") do
[version] -> version
_ -> nil
end
conn |> Conn.put_private(:maru_version, vsn)
end
def call(conn, {:parameter, key}) do
conn = conn |> Conn.fetch_query_params
vsn = conn.params |> Map.get(key)
conn |> Conn.put_private(:maru_version, vsn)
end
end
defmodule Maru.Plugs.PutVersion do
@moduledoc """
This module is a plug, put version to private variable `maru_version`.
"""
@doc false
def init(version) do
version
end
@doc false
def call(conn, version) do
Plug.Conn.put_private(conn, :maru_version, version)
end
end