Module: Paramore::Extension

Defined in:
lib/paramore/extension.rb

Constant Summary collapse

OPTIONS = 
%i[
  default
].freeze

Instance Method Summary collapse

Instance Method Details

#field(*args) ⇒ Object 



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# File 'lib/paramore/extension.rb', line 10

def field(*args)
  Paramore.field(*args)
end

#param_schema(accessor_name, parameter_configuration) ⇒ Object 



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# File 'lib/paramore/extension.rb', line 14

def param_schema(accessor_name, parameter_configuration)
  unless parameter_configuration.keys.size == 1
    raise ArgumentError,
      "Paramore: exactly one required attribute allowed! Given: #{parameter_configuration.keys}"
  end

  required_parameter_name = parameter_configuration.keys.first
  types_definition = parameter_configuration.values.first

  permitted_parameter_argument =
    if types_definition.is_a?(Paramore::Field)
      Paramore::PermittedParameterArgument.parse(types_definition)
    else
      types_definition
    end

  define_method(accessor_name) do |rails_parameters = params|
    return instance_variable_get("@#{accessor_name}") if instance_variable_defined?("@#{accessor_name}")

    if rails_parameters[required_parameter_name].nil? && types_definition.default?
      instance_variable_set("@#{accessor_name}", types_definition.default)
      return instance_variable_get("@#{accessor_name}")
    end

    required_params = rails_parameters.require(required_parameter_name)
    should_permit = permitted_parameter_argument.any? && required_params.is_a?(ActionController::Parameters)

    permitted_params =
      if should_permit
        required_params.permit(permitted_parameter_argument)
      else
        required_params
      end

    parameter_values =
      if types_definition.is_a?(Paramore::Field)
        if should_permit
          permitted_params.merge(
            Paramore::CastParameters.run(
              types_definition,
              permitted_params.to_hash.with_indifferent_access
            )
          ).permit!
        else
          Paramore::CastParameters.run(types_definition, permitted_params)
        end
      else
        permitted_params.permit!
      end

    instance_variable_set("@#{accessor_name}", parameter_values)
  end
end