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potionx
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Potionx is a set of generators and functions that speeds up the process of setting up and deploying a full-stack application that uses Elixir with GraphQL for the server-side component and Vue for the frontend component.
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lib/potionx/plugs/urql_upload_plug.ex
defmodule Potionx.Plug.UrqlUpload do
def call(%{params: %{"map" => map, "operations" => operations} = params} = conn, _opts) do
map = Jason.decode!(map)
next_params = Jason.decode!(operations)
{changes, uploads} = Enum.reduce(map, {%{}, %{}}, fn {k, [key]}, {changes, uploads} ->
file = Map.get(params, k)
key = String.split(key, ".") |> Enum.at(-1)
{
Map.put(
changes,
key,
file.filename
),
Map.put(
uploads,
file.filename,
file
)
}
end)
%{
conn |
params: %{
next_params |
"variables" => %{
next_params["variables"] |
"changes" => Map.merge(next_params["variables"]["changes"], changes)
}
}
|> Map.merge(uploads)
}
end
def call(conn, _opts), do: conn
def init(opts), do: opts
end