Unknown keys handling (tests to be added)

[rakesh-voiger]

# deps
{:validate, git: "https://github.com/voigerio/validate.git", tag: "unknown"}

• unknown option is added for map types, which can be one of [:remove, :reject, :allow]
• this unknown defaults to :remove (current behaviour)
• For us, we need :reject most of the times.
  Rest of the usage is same as the base, check the README for more details.

input = %{
  "name" => "Jane Doe",
  "colors" => ["red", "green"],
  "address" => %{
    "line0" => "sunga",
    "line1" => "123 Fake St",
    "city" => "Saskatoon",
  },
  "bad key" => "value",
  "friends" => [
    %{"name" => "John", "email" => "john@example.com"},
    %{"name" => "Michelle", "email" => "michelle@example.com", "sunda" => 9}
  ]
}

rules = [
  required: true,
  type: :map,
  unknown: :reject,
  map: %{
    "name" => [required: true, type: :string],
    "colors" => [
      required: true,
      type: :list,
      list: [required: true, type: :string, in: ~w[blue orange red green purple]]
    ],
    "address" => [
      required: true,
      type: :map,
      unknown: :reject,
      map: %{
        "line1" => [required: true, type: :string],
        "city" => [required: true, type: :string],
      }
    ],
    "friends" => [
      required: true,
      type: :list,
      list: [
        required: true,
        type: :map,
        map: %{
          "name" => [required: true, type: :string],
          "email" => [required: true, type: :string]
        }
      ]
    ]
  }
]

result = Validate.validate(input, rules)
IO.inspect(result)

[rakesh-voiger]

Fix for #29