Format numbers as words

Rails
1

Does anyone know if there is a function available which can format any
entered number as words?

eg: ‘1234’ would be ‘One Thousand Two Hundred and Thirty Four’

In the past, I would have said this is a tall order, but from what I’ve
seen with playing with rails for a short time, I don’t know what to
expect. :slight_smile:

Thanks for any help,
Damien

2

Damien T. wrote:

Does anyone know if there is a function available which can format any
entered number as words?

eg: ‘1234’ would be ‘One Thousand Two Hundred and Thirty Four’

In the past, I would have said this is a tall order, but from what I’ve
seen with playing with rails for a short time, I don’t know what to
expect. :slight_smile:

Thanks for any help,
Damien
Ruby Quiz - English Numerals (#25)

j`ey
http://www.eachmapinject.com

3

joey__ wrote:

Damien T. wrote:

Does anyone know if there is a function available which can format any
entered number as words?

eg: ‘1234’ would be ‘One Thousand Two Hundred and Thirty Four’

In the past, I would have said this is a tall order, but from what I’ve
seen with playing with rails for a short time, I don’t know what to
expect. :slight_smile:

Thanks for any help,
Damien
Ruby Quiz - English Numerals (#25)

j`ey
http://www.eachmapinject.com

Thanks, that looks perfect, but i’m really confused as to how I
implement it… it doesnt explain on that page how to actually use it??

Sorry, i’m a real noob with rails.

4

Thanks, that looks perfect, but i’m really confused as to how I
implement it… it doesnt explain on that page how to actually use it??

Sorry, i’m a real noob with rails.

Add the code from:
http://www.ruby-talk.org/cgi-bin/scat.rb/ruby/ruby-talk/135735

Into a english_numbers.rb in the lib/ folder. Then do require
‘lib/english_numbers.rb’

Then do EnglishNumerals.to_English(number)

j`ey
http://eachmapinject.com

Thanks for the help, but i’m still quite confused.

I did as you said, made the file in lib but I wasn’t too sure where to
put the require so I’ve tried everything - in the model, helper and
controller. Wherever I put it, it returned an error, but when it was in
the controller, rather than saying it couldn’t find the file or
something to that effect, it said “wrong number of arguments (0 for 1)”

5

Place the code into a file called number.rb … you can put it in your
models directory for example.

If it is in your models directory, then you don’t even need to require
‘number’ - all you do is make a call to Number.to_words and pass the
amount as a parameter …

insight$ ls
number.rb
insight$ irb
irb(main):001:0> require ‘number’
=> true
irb(main):002:0> Number.to_words 345678
=> “three hundred and fourty five thousand six hundred and seventy
eight”
irb(main):003:0> exit
insight$

6

Damien T. wrote:

joey__ wrote:

Damien T. wrote:

Does anyone know if there is a function available which can format any
entered number as words?

eg: ‘1234’ would be ‘One Thousand Two Hundred and Thirty Four’

In the past, I would have said this is a tall order, but from what I’ve
seen with playing with rails for a short time, I don’t know what to
expect. :slight_smile:

Thanks for any help,
Damien
Ruby Quiz - English Numerals (#25)

j`ey
http://www.eachmapinject.com

Thanks, that looks perfect, but i’m really confused as to how I
implement it… it doesnt explain on that page how to actually use it??

Sorry, i’m a real noob with rails.

Add the code from:
http://www.ruby-talk.org/cgi-bin/scat.rb/ruby/ruby-talk/135735

Into a english_numbers.rb in the lib/ folder. Then do require
‘lib/english_numbers.rb’

Then do EnglishNumerals.to_English(number)

j`ey
http://eachmapinject.com

7

Does this do the trick? You can uncomment the commented lines at the
end and run the script to see if it works. Improvements and better
ways to do this are appreciated …

– G.

class Number

def self.to_words(number)
Number.new.to_s(number)
end

def self.commify(number)
(s=number.to_s;x=s.length;s).rjust(x+(3-(x%3))).gsub(/(\d)(?=\d{3}+(.\d*)?$)/,
‘\1,’)
end

def initialize
@unit = %w[zero one two three four five six seven eight nine]
@teen = %w[ten eleven twelve thirteen fourteen fifteen sixteen
seventeen eighteen nineteen]
@tens = %w[zero ten twenty thirty fourty fifty sixty seventy eighty
ninety]
@qtys = %w[hundred thousand million billion trillion quadrillion
quintillion]
@zero = [“zero”]
@hundred = “hundred”
@sepr = “and”
end

def to_s(number)
out = quantify(number).flatten
for x in 0 … out.length - 1
out[x] = nil if out[x] == @sepr && out[x+1] == @sepr
out[x] = nil if out[x] == “,” && out[x+1] == “,”
end
out.compact!
out = @zero if out.length == 1 && out[0] == @sepr
out.pop while out.last == @sepr
out.shift while out.first == @sepr
out.join(’ ‘).gsub(/ ,/,’,’)
end

private

def padded_groups(v)
out = []
padded = (s=v.to_s;x=s.length;s).rjust(x+(3-(x%3))).gsub(/ /,‘0’)
padded.scan(/.{3}/)
end

def wordify(v)
out = []
zero = ‘0’[0]
h, t, u = v[0] - zero, v[1] - zero, v[2] - zero
if h != 0
out << @unit[h]
out << @hundred
end
out << @sepr if h != 0 && (t != 0 || u != 0)
out << @sepr if h == 0 && t == 0 && u != 0
if t == 1
out << @teen[u]
else
out << @tens[t] if t != 0
out << @unit[u] if u != 0
end
return out
end

def quantify(v)
v = padded_groups(v).reverse
cur = pos = v.length - 1
out = []
while pos >= 0
if v[pos] == ‘,’
out << ‘,’
next
end
word = wordify(v[pos])
if word[0] != nil
out << word
out << @qtys[cur] if cur != 0
else
out << @sepr
end
cur -= 1
pos -= 1
end
return out
end

end

for number in [

0,

1,

3,

11,

100,

1000,

1001,

1100,

1101,

1_000_001,

8_000_000_000,

8_000_000_001,

4_567_890_923,

6_804_567_890_903,

5_006_804_567_890_903

]

print “#{Number.commify(number)}: #{Number.to_words(number)}\n”

end

8

Just the job!!! thats a great class

Cheers

Tim

9

thanks, Guido S., that did the trick.

when I tried it with the previous code from j`ey, it killed my server
and I had to reboot, but with that new script, it’s perfect. thanks
again.