From: Gordon Thiesfeld <gthiesfeld@...>
Date: 2010-08-13T07:05:30+09:00
Subject: Re: Highline and Chronic

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On Thu, Aug 12, 2010 at 2:42 AM, R.. Kumar 1.9.1 OSX <sentinel1879@gmail.com
> wrote:

> I just heard of Chronic and wanted to integrate it with Highline so i
> could get natural language dates like "yesterday", "tomorrow" etc.
>
> I find that I get a nil returned if I do:
>
>  dob1       = ask("DOB?  ", Chronic)
>
> However, if i try this it works:
>
>  class NameClass
>   def self.parse( string )
>     Chronic.parse(string)
>   end
>
>  end
>
>  dob       = ask("Date?  ", NameClass)
>
> Looking thru source reveals that :
>
>      elsif [Date, DateTime].include?(@answer_type) or
> @answer_type.is_a?(Class)
>        @answer_type.parse(answer_string)
>
> Now Chronic is a module not a class. So i guess in this case no part of
> the "case" was called.
> Now my question is:
> 1. Should there be a respond_to in the Highline case, or perhaps a check
> for module also ?
>
> 2. Is there anyway i can do this in one line without modifying highline,
> and without creating a separate class. Is there some block method or
> param i could use to invoke Chronic.parse ?
>
>
You could use a proc object


# test.rb
require 'rubygems'
require 'highline'
require 'chronic'

hl = HighLine.new

dob1 = hl.ask("DOB?  ", proc{|x| Chronic.parse(x)} )

p dob1

#######

>ruby test.rb
DOB?  Last Tuesday
Tue Aug 10 12:00:00 -0500 2010

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