Module: Camille::Controller

Defined in:
lib/camille/controller.rb

Defined Under Namespace

Classes: ArgumentError, MissingRenderError, ParamsTypeError, ResponseTypeError, TypeError

Instance Method Summary collapse

Instance Method Details

#camille_endpoint ⇒ Object 



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# File 'lib/camille/controller.rb', line 13

def camille_endpoint
  camille_schema && camille_schema.endpoints[action_name.to_sym]
end

#camille_schema ⇒ Object 



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# File 'lib/camille/controller.rb', line 9

def camille_schema
  @camille_schema ||= Camille::Loader.controller_name_to_schema_map[self.class.name]
end

#process_action ⇒ Object 



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# File 'lib/camille/controller.rb', line 44

def process_action(*)
  Camille::Loader.check_and_raise_exception
  if endpoint = camille_endpoint
    begin
      if Camille::Configuration.check_params
        # New way: check params against the endpoint's params_type if it exists
        if endpoint.params_type
          params_to_check = params.to_unsafe_h
          check_result = endpoint.params_type.check_params(params_to_check)

          if check_result.type_error?
            string_io = StringIO.new
            Camille::TypeErrorPrinter.new(check_result).print(string_io)
            raise ParamsTypeError.new("\nType check failed for params.\n#{string_io.string}")
          else
            # Use the checked value which already has snake_case keys
            self.params = ActionController::Parameters.new(check_result.value)
          end
        end
      else
        # Old way: just transform keys
        params.deep_transform_keys!{|key| Camille::Configuration.params_key_converter.call(key.to_s)}
      end

      result = super
      # When there's no `render` call, Rails will return status 204
      if response.status == 204
        raise_missing_render_error
      end
      result
    rescue ActionController::MissingExactTemplate
      raise_missing_render_error
    end
  else
    super
  end
end

#render(*args) ⇒ Object 



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# File 'lib/camille/controller.rb', line 17

def render *args
  if endpoint = camille_endpoint
    render_options = args.last
    intended_status = render_options[:status] || 200
    if intended_status == 200 || intended_status == :ok
      if render_options.has_key? :json
        value = render_options[:json]
        result = endpoint.response_type.check(value)
        if result.type_error?
          string_io = StringIO.new
          Camille::TypeErrorPrinter.new(result).print(string_io)
          raise ResponseTypeError.new("\nType check failed for response.\n#{string_io.string}")
        else
          rendered = result.render.json
          super(json: rendered)
        end
      else
        raise ArgumentError.new("Expected key :json for `render` call.")
      end
    else
      super
    end
  else
    super
  end
end