validate_format_of string with áêìõü in rails

Question

I'm making a french verb conjugation Rails website where users may insert conjugations of verbs like:

     se abstenir
     m'appelle
     êtes
     achète

And I need to validate_format_of those verbs. The apostrophes are quite easy, but what about the êèã characters?

By now I have:

    word_format = /\A[\w]+[' ]?[\w]*\z/
    validates_format_of (...), :with => word_format

Which clearly doesn't work since \w doesn't match them. Also including áêĩ(...) to the regexp gives me a invalid multibyte char (US-ASCII) error.

I also need to upcase of downcase those strings, which ruby is ignoring, resulting in 'VOUS êTES' for example. The trivial answer seems to be doing it by hand, but I hope Ruby/Rails to surprise me again.

Its seems to be a hard problem, and I wasn't expecting since Ruby/Rails power.

Anybody could give me a clue?

score 0 · Answer 1 · edited May 23 '17 at 10:34

0

It looks like instead of \w you need to use the POSIX bracket expression [:alpha].

word_format = /\A[:alpha]+[' ]?[\w]*\z/

edited May 23 '17 at 10:34

Community

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answered Mar 27 '12 at 15:33

ScottJShea

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Wrong answer: 'á'.match(/[:alpha]/) answers => nil...thanks anyway, but not useful – alexandrecosta Mar 27 '12 at 15:50

score 0 · Accepted Answer · edited May 17 '19 at 12:37

0

You'll need to install UnicodeUtils for the upcasing thing.

#encoding: utf-8
require "unicode_utils/upcase"
puts UnicodeUtils.upcase("êtes Niño")#=> ÊTES NIÑO

The regex could look like this:

word_format = /\A[[:word:]]+[' ]?[[:word:]]*\z/

/[[:word:]]/ - A character in one of the following Unicode general categories Letter, Mark, Number, Connector_Punctuation.

edited May 17 '19 at 12:37

Cœur

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answered Mar 27 '12 at 15:54

steenslag

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validate_format_of string with áêìõü in rails

2 Answers2