Implementation of the Plug

This implements the call callback of the Plug. It calls the symbolize_merge/2 method on the Plug.Conn params map, so they are available both with String and Atom keys.

Initializes the Plug.

Converts String keys of a Map to Atoms

Takes a Map with String keys and an optional keyword list of options. Returns a new map with all values accessible by both String and Atom keys. If the map is nested, it symbolizes all sub-maps as well.

The only option supported at this time is drop_string_keys which defaults to false. When set true, it will return a new map with only Atom version of the keys.

Example

map = %{"a" => 1, "b" => %{"c" => 2, "d" => 3}}

mixed_map = BetterParams.symbolize_merge(map)
# => %{:a => 1, :b => %{c: 2, d: 3}, "a" => 1, "b" => %{"c" => 2, "d" => 3}}

atom_map = BetterParams.symbolize_merge(map, drop_string_keys: true)
# => %{a: 1, b: %{c: 2, d: 3}}

mixed_map[:a]           # => 1
mixed_map[:b][:c]       # => 2
mixed_map.b.d           # => 3