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GitHub - zbarnes757/jeaux: A module for validating http params and queries
A module for validating http params and queries. Contribute to zbarnes757/jeaux development by creating an account on GitHub.
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GitHub - zbarnes757/jeaux: A module for validating http params and queries

GitHub - zbarnes757/jeaux: A module for validating http params and queries

Jeaux

Hex.pm Build Status

Jeaux is a light and easy schema validator.

Installation

Available in Hex, the package can be installed as:

  1. Add jeaux to your list of dependencies in mix.exs:
```elixir
def deps do
  [{:jeaux, "~> 0.7.0"}]
end
```

Example:

# web/controllers/my_controller.ex
@params_schema %{
  lat!: :float,
  lon!: :float,
  radius: [type: :integer, default: 100, min: 1, max: 100],
  is_point: :boolean,
  properties: %{
    name: :string
  }
}

def index(conn, params) do
    case Jeaux.validate(params, @params_schema) do
      {:ok, valid_params} -> do_your_thing(valid_params)
      {:error, message} -> Explode.bad_request(conn, message)
    end
end

Using a ! in your key denotes it is required.

Currently, the following keys are valid:

  • type: with :integer, :string, :boolean, :guid (:string type is implied), :float, or :list as applicable types
  • default: Sets a default value if none is currently provided in params
  • min: Minimum value a param can have
  • max: Maximum value a param can have
  • valid: Values that are valid options. Can be a single item or a list.

For :list types, if passed an array from a query string (a la foo=1,2,3), it will parse into a list (['1', '2', '3']). I am still working on finding a way to coerce these into the types they should be.

Params must be a map but the keys can be strings or atoms and in camelCase or snake_case. The keys of the object to be validated will be converted to snake_case prior to validation. Therefore the validation should use snake_case atoms. Additionally, the result will always be returned as snake_case atom keys as well.

If you want to contribute, feel free to fork and open a pr.

Checkout Explode for an easy utility for responding with standard HTTP/JSON error payloads in Plug- and Phoenix-based applications.

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