wxruby users - Nov 2009 - DatePickerCtrl uninitialized constant

I trying to make a Dialog that include a DatePickerCtrl on my gentoo
linux box.

I get the following error
/usr/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:478:in
`const_missing'': uninitialized constant PortfolioDialog::DatePickerCtrl
(NameError)

My application use ActiveRecord, thats why the error is from
activesupport.

gem list says
wxruby (1.9.9, 1.9.8)

Should DatePickerCtrl work in this version?

Hello Svend,

2009/11/5 Svend Haugaard S?rensen <shs at demosophia.net>
> I trying to make a Dialog that include a DatePickerCtrl on my gentoo
> linux box.
>
> I get the following error
>
>
/usr/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:478:in
> `const_missing'': uninitialized constant
PortfolioDialog::DatePickerCtrl
> (NameError)
>
> My application use ActiveRecord, thats why the error is from
> activesupport.
>
> gem list says
> wxruby (1.9.9, 1.9.8)
>
1.9.8 and 1.9.9 are old versions, you should use 2.0.1, as it is the newest,
however the wxDatePickerCtrl is in 1.9.9 and 1.9.8.  The problem is, is that
ActiveSupport is trying to check for a Constant, that does not exist.  You
need to use Wx::DatePickerCtrl in order to make it work, unless you include
Wx in PortfolioDialog class.

EG:

class PortfolioDialog < Wx::Dialog
  def initialize
    super
    @dpc = Wx::DatePickerCtrl.new
  end
end

Or:

class PortfolioDialog < Wx::Dialog
  include Wx
  def initialize
    super
    @dpc = DatePickerCtrl.new
  end
end

Or

module Wx
  class PortfolioDialog < Dialog
    def initialize
      super
      @dpc = DatePickerCtrl.new
    end
  end
end

The last method I would not use, as that pollutes the Wx namespace.  But the
point being, that when you subclass from a wxRuby class, it does not
automatically inherit the Wx namespace.  You need to either explicitly
define it, include it, or define your class under the Wx namespace, in order
to avoid having to use the Wx namespace in pre-pending of class definitions.

hth,

Mario

> Should DatePickerCtrl work in this version?
>
> _______________________________________________
> wxruby-users mailing list
> wxruby-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/wxruby-users
>


-- 
Mario Steele
http://www.trilake.net
http://www.ruby-im.net
http://rubyforge.org/projects/wxruby/
http://rubyforge.org/projects/wxride/
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On Fri, 6 Nov 2009 02:40:47 -0500
Mario Steele <mario at ruby-im.net> wrote:
> Hello Svend,
> 
> 2009/11/5 Svend Haugaard S?rensen <shs at demosophia.net>
> 
> > I trying to make a Dialog that include a DatePickerCtrl on my gentoo
> > linux box.
> >
> > I get the following error
> >
> >
/usr/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:478:in
> > `const_missing'': uninitialized constant
> > PortfolioDialog::DatePickerCtrl (NameError)
> >
> > My application use ActiveRecord, thats why the error is from
> > activesupport.
> >
> > gem list says
> > wxruby (1.9.9, 1.9.8)
> >
> 
> 1.9.8 and 1.9.9 are old versions, you should use 2.0.1, as it is the
> newest, however the wxDatePickerCtrl is in 1.9.9 and 1.9.8.  The
> problem is, is that ActiveSupport is trying to check for a Constant,
> that does not exist.  You need to use Wx::DatePickerCtrl in order to
> make it work, unless you include Wx in PortfolioDialog class.
>
I have have a ''include Wx'' just after ''require
"wx"'' in my program.

If I use @buy_date=Wx::DatePickerCtrl.new(self,-1)
the error change to

 /usr/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:263:in
`load_missing_constant'': uninitialized constant Wxruby2::DatePickerCtrl
(NameError)

I tried to make a ''gem update wxruby'' and that installed the
1.9.9
version. And it didn''t remove the error.