No OneTemporary
Actions

Size

1 KB

Referenced Files

None

Subscribers

None

View Options

	diff --git a/lib/tesla/middleware/decode_rels.ex b/lib/tesla/middleware/decode_rels.ex
	index 6b6874d..3aee3a6 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)
	+ \|> List.flatten
	\|> Enum.into(%{})
	end

	defp rel(item) do
	- [url, param] = String.split(item, ";")
	- [_attr, value] = param \|> String.trim() \|> String.split("=")
	- {value \|> String.trim("'") \|> String.trim("\""), url \|> String.trim(">") \|> String.trim("<")}
	+ parts = String.split(item, ";")
	+ {url, attrs} = List.pop_at(parts, 0)
	+
	+ Enum.map(attrs, fn param ->
	+ [_attr, value] = param \|> String.trim() \|> String.split("=")
	+
	+ {value \|> String.trim("'") \|> String.trim("\""),
	+ url \|> String.trim(">") \|> String.trim("<")}
	+ end)
	end
	end