Module: Pakyow::Reflection::Extension::Controller

Extended by:
Support::Extension
Defined in:
lib/pakyow/reflection/extensions/controller.rb

Instance Method Summary collapse

Instance Method Details

#perform_reflected_action ⇒ Object 



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# File 'lib/pakyow/reflection/extensions/controller.rb', line 122

def perform_reflected_action
  with_reflected_action do |reflected_action|
    logger.debug {
      "[reflection] performing `#{[self.class.name_of_self, connection.values[:__endpoint_name]].join("_")}' for `#{reflected_action.view_path}'"
    }

    proxy = data.public_send(reflected_action.scope.plural_name)

    # Pull initial values from the params.
    #
    values = params[reflected_action.scope.name]

    # Associate the object with its parent when creating.
    #
    if self.class.parent && connection.get(:__endpoint_name) == :create
      # TODO: Handle cases where objects are associated by id but routed by another field.
      # Implement when we allow foreign keys to be specified in associations.
      #
      if proxy.source.class.attributes.key?(self.class.parent.nested_param)
        values[self.class.parent.nested_param] = params[self.class.parent.nested_param]
      end
    end

    # Limit the action for update, delete.
    #
    if connection.get(:__endpoint_name) == :update || connection.get(:__endpoint_name) == :delete
      proxy = proxy.public_send(:"by_#{proxy.source.class.primary_key_field}", params[self.class.param])
      trigger 404 if proxy.count == 0
    end

    proxy.transaction do
      unless connection.get(:__endpoint_name) == :delete
        handle_nested_values_for_source(values, proxy.source.class)
      end

      @object = proxy.send(
        connection.get(:__endpoint_name), values
      )
    end

    logger.debug {
      "[reflection] changes have been saved to the `#{proxy.source.class.plural_name}' data source"
    }
  end
rescue Data::ConstraintViolation
  trigger 404
end

#redirect_to_reflected_destination ⇒ Object 



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# File 'lib/pakyow/reflection/extensions/controller.rb', line 170

def redirect_to_reflected_destination
  if destination = reflected_destination
    logger.debug {
      "[reflection] redirecting to `#{destination}'"
    }

    redirect destination
  end
end

#reflected_destination ⇒ Object 



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# File 'lib/pakyow/reflection/extensions/controller.rb', line 180

def reflected_destination
  with_reflected_action do |reflected_action|
    if connection.form && origin = connection.form[:origin]
      if instance_variable_defined?(:@object)
        if route = self.class.routes[:get].find { |route| route.name == :show }
          route.build_path(self.class.path_to_self, **params.merge(@object.one.to_h))
        elsif route = self.class.routes[:get].find { |route| route.name == :list }
          route.build_path(self.class.path_to_self, **params)
        else
          origin
        end
      else
        origin
      end
    else
      nil
    end
  end
end

#reflective_expose ⇒ Object 



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# File 'lib/pakyow/reflection/extensions/controller.rb', line 31

def reflective_expose
  reflected_endpoint.exposures.each do |reflected_exposure|
    if reflected_exposure.parent.nil? || reflected_exposure.binding.to_s.include?("form")
      if dataset = reflected_exposure.dataset
        query = data.send(reflected_exposure.scope.plural_name)

        if dataset.include?(:limit)
          query = query.limit(dataset[:limit].to_i)
        end

        if dataset.include?(:order)
          query = query.order(*dataset[:order].to_a)
        end

        if dataset.include?(:query) && dataset[:query] != "all"
          case dataset[:query]
          when Array
            dataset[:query].each do |key, value|
              value = if respond_to?(value)
                public_send(value)
              else
                value
              end

              query = query.public_send(key, value)
            end
          else
            query = query.public_send(dataset[:query].to_s)
          end
        end
      else
        query = data.send(reflected_exposure.scope.plural_name)

        if reflects_specific_object?(reflected_exposure.scope.plural_name)
          if resource = resource_with_name(reflected_exposure.scope.plural_name)
            if resource == self.class
              query_param = resource.param
              params_param = resource.param
            else
              query_param = resource.param
              params_param = resource.nested_param
            end

            query = query.send(:"by_#{query_param}", params[params_param])
          end
        end
      end

      query = apply_includes_to_query(query, reflected_exposure.scope.plural_name, reflected_exposure.children)

      if reflects_specific_object?(reflected_exposure.scope.plural_name) && query.count == 0
        trigger 404
      else
        if !reflected_exposure.binding.to_s.include?("form") || reflected_endpoint.view_path.end_with?("/edit")
          logger.debug {
            "[reflection] exposing dataset for `#{reflected_exposure.binding}': #{query.inspect}"
          }

          expose reflected_exposure.binding.to_s, query
        end
      end
    end
  end
end

#verify_reflected_form ⇒ Object 



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# File 'lib/pakyow/reflection/extensions/controller.rb', line 96

def verify_reflected_form
  with_reflected_action do |reflected_action|
    local = self

    verify do
      required reflected_action.scope.name do
        reflected_action.attributes.each do |attribute|
          if attribute.required?
            required attribute.name do
              validate :presence
            end
          else
            optional attribute.name
          end
        end

        local.__send__(:verify_nested_data, reflected_action.nested, self)
      end
    end

    logger.debug {
      "[reflection] verified and validated submitted values for `#{reflected_action.scope.name}'"
    }
  end
end

#with_reflected_action ⇒ Object 



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# File 'lib/pakyow/reflection/extensions/controller.rb', line 15

def with_reflected_action
  if reflected_action
    yield reflected_action
  else
    trigger 404
  end
end

#with_reflected_endpoint ⇒ Object 



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# File 'lib/pakyow/reflection/extensions/controller.rb', line 23

def with_reflected_endpoint
  if reflected_endpoint
    yield reflected_endpoint
  else
    trigger 404
  end
end