Singleton Object nil

Hey all,

I have the following in my Controller:

    class << self
            attr_accessor :all_devices, :test
            #def initialize(devices)
            #       @all_devices = devices
            #end
    end

def initialize_devices
AllDevicesController.all_devices = @devices_array
redirect_to :action => “show_all_devices”
end

Where devices_array is an array of devices.

def show_all_devices
@devices_array = AllDevicesController.all_devices
respond_to do |format|
format.html # show.html.erb
format.xml { render :xml => @devices }
end
end

The problem here is when accessing @devices_array in the view
@devices_array is nil. I know the code is being executed in
initialize_devices because if I don’t redirect to show_all_devices I can
manipulate the @devices_array within the initialize_devices view.
However, accessing AllDevicesController.all_devices in show_all_devices
results in nil.

Anyone know why?

On Jul 22, 10:05 pm, Tyler K. [email protected]
wrote:

The problem here is when accessing @devices_array in the view
@devices_array is nil. I know the code is being executed in
initialize_devices because if I don’t redirect to show_all_devices I can
manipulate the @devices_array within the initialize_devices view.
However, accessing AllDevicesController.all_devices in show_all_devices
results in nil.

Anyone know why?

because in development mode your source code is reloaded between
requests (ie it is no longer the same AllDevicesController class).

Fred

Tyler K. wrote:

Hey all,

I have the following in my Controller:

    class << self
            attr_accessor :all_devices, :test
            #def initialize(devices)
            #       @all_devices = devices
            #end
    end

def initialize_devices
AllDevicesController.all_devices = @devices_array
redirect_to :action => “show_all_devices”
end

Where devices_array is an array of devices.

def show_all_devices
@devices_array = AllDevicesController.all_devices
respond_to do |format|
format.html # show.html.erb
format.xml { render :xml => @devices }
end
end

The problem here is when accessing @devices_array in the view
@devices_array is nil. I know the code is being executed in
initialize_devices because if I don’t redirect to show_all_devices I can
manipulate the @devices_array within the initialize_devices view.
However, accessing AllDevicesController.all_devices in show_all_devices
results in nil.

Anyone know why?

Further

@t = AllDevicesController.instance_variable_get(:@all_devices)

Allows me to retrieve the all_devices var in initialize_devices but NOT
in the show_all_devices portion of the controller. Instead, it is nil.

Frederick C. wrote:

On Jul 22, 10:05�pm, Tyler K. [email protected]
wrote:

The problem here is when accessing @devices_array in the view
@devices_array is nil. �I know the code is being executed in
initialize_devices because if I don’t redirect to show_all_devices I can
manipulate the @devices_array within the initialize_devices view.
However, accessing AllDevicesController.all_devices in show_all_devices
results in nil.

Anyone know why?

because in development mode your source code is reloaded between
requests (ie it is no longer the same AllDevicesController class).

Fred

This was exactly the problem I was experiencing.

Thanks Fred!

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