ruby, tk lib. Output from getopenfile - arrays

Question

I am trying to load multiple files via ruby/tk lib and put them into array:
def openFiles
return Tk.getOpenFile( 'title' => 'Select Files',
'multiple' => true,
'defaultextension' => 'csv',
'filetypes' => "{{Comma Seperated Values} {.csv}} {TXT {.txt}} {All files {.*}}")
end
and then in code
filess = TkVariable.new()
button1 = TkButton.new(root){
text 'Open Files'
command (proc {filess.value = openFiles; puts filess; puts filess.class; puts filess.inspect})
}.grid(:column => 1, :row => 1, :sticky => 'we')
The problem is that I can not manage to get the output as array and I do not know if it is possible or I will have to somehow parse the output. Hm? Please help. Thank you.
this is the output, when I click on the button:
C:\file1
C:\file2
TkVariable
#<TkVariable: v00000>
I think it should be: (for the array part)
['C:\file1','C:\file2']

Answer 1

TkVariable implements #to_a, which you can use to convert its value into the Array you want.
button1 = TkButton.new(root) {
text 'Open Files'
command (proc do
filess.value = openFiles
puts filess.to_a.class
puts filess.to_a.inspect
end)
}.grid(:column => 1, :row => 1, :sticky => 'we')
Array
["C:\file1", "C:\file2"]

Answer 2

This worked for me using Ruby 2.2.5 (with Tk 8.5.12) on Windows 7:
require 'tk'
def extract_filenames_as_ruby_array(file_list_string)
::TkVariable.new(file_list_string).list
end
def files_open
descriptions = %w[
Comma\ Separated\ Values
Text\ Files
All\ Files
]
extensions = %w[ {.csv} {.txt} * ]
types = descriptions.zip(extensions).map {|d,e| "{#{d}} #{e}" }
file_list_string = ::Tk.getOpenFile \
filetypes: types,
multiple: true,
title: 'Select Files'
extract_filenames_as_ruby_array file_list_string
end
def lambda_files_open
#lambda_files_open ||= ::Kernel.lambda do
files = files_open
puts files
end
end
def main
b_button_1
::Tk.mainloop
end
# Tk objects:
def b_button_1
#b_button_1 ||= begin
b = ::Tk::Tile::Button.new root
b.command lambda_files_open
b.text 'Open Files'
b.grid column: 1, row: 1, sticky: :we
end
end
def root
#root ||= ::TkRoot.new
end
main
For reference, Tk.getOpenFile is explained in the Tk Commands and Ruby documentation.