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diff --git a/lib/tesla/middleware/decode_rels.ex b/lib/tesla/middleware/decode_rels.ex
index 8c7c43c..fd99e9f 100644
--- a/lib/tesla/middleware/decode_rels.ex
+++ b/lib/tesla/middleware/decode_rels.ex
@@ -1,54 +1,61 @@
defmodule Tesla.Middleware.DecodeRels do
@moduledoc """
Decode `Link` Hypermedia HTTP header into `opts[:rels]` field in response.
## Example usage
```
defmodule MyClient do
use Tesla
plug Tesla.Middleware.DecodeRels
end
env = MyClient.get("/...")
env.opts[:rels]
# => %{"Next" => "http://...", "Prev" => "..."}
```
"""
@behaviour Tesla.Middleware
@impl Tesla.Middleware
def call(env, next, _opts) do
env
|> Tesla.run(next)
|> parse_rels
end
defp parse_rels({:ok, env}), do: {:ok, parse_rels(env)}
defp parse_rels({:error, reason}), do: {:error, reason}
defp parse_rels(env) do
if link = Tesla.get_header(env, "link") do
Tesla.put_opt(env, :rels, rels(link))
else
env
end
end
defp rels(link) do
link
|> String.split(",")
|> Enum.map(&String.trim/1)
|> Enum.map(&rel/1)
|> Enum.into(%{})
end
defp rel(item) do
- Regex.run(~r/\A<(.+)>; rel="(.+)"\z/, item, capture: :all_but_first)
- |> Enum.reverse()
- |> List.to_tuple()
+ case Regex.run(~r/\A<(.+)>; rel=(.+)\z/, item, capture: :all_but_first) do
+ nil ->
+ {}
+
+ link_rel ->
+ link_rel
+ |> Enum.reverse()
+ |> List.replace_at(0, String.trim(List.last(link_rel), "\""))
+ |> List.to_tuple()
+ end
end
end

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