Translating dynamic content

Rails Rails I18n
1

Hi all. I have a custom validation which produces an error message with
dynamic content, like so:

errors.add_to_base(“Must have exactly #{self.size} questions for a
#{self.size}-question sequenced quiz”)

Can anyone tell me the cleanest way to localise this? I can think of
some dirty sort of ways along the lines of

errors.add_to_base("#{I18n.t(:‘quiz.errors.sequential.wrong_question_number_1’)}
#{self.size}
#{I18n.t(:‘quiz.errors.sequential.wrong_question_number_2’)}
#{self.size}
#{I18n.t(:‘quiz.errors.sequential.wrong_question_number_3’)}")

But this seems nasty like i say, and also assumes that in all languages
there will be three text chunks with the size in between, which might
not be the case. Can i somehow incorporate variables into my locale.yml
files? or some other similar approach?

2

On Fri, Mar 26, 2010 at 12:12, Max W. [email protected]
wrote:

Hi all. I have a custom validation which produces an error message with
dynamic content, like so:

errors.add_to_base(“Must have exactly #{self.size} questions for a
#{self.size}-question sequenced quiz”)

Can anyone tell me the cleanest way to localise this? I can think of
some dirty sort of ways along the lines of

You could do something like

errors.add_to_base(I18n.t(:‘activerecord.errors.quiz.wrong_question_number’,
:count => self.size))

with a key like

…
wrong_question_number:
one: “Must have #{count} question”
other: “Must have #{count} questions”

3

Henrik — wrote:

On Fri, Mar 26, 2010 at 12:12, Max W. [email protected]
wrote:

Hi all. �I have a custom validation which produces an error message with
dynamic content, like so:

�errors.add_to_base(“Must have exactly #{self.size} questions for a
#{self.size}-question sequenced quiz”)

Can anyone tell me the cleanest way to localise this? �I can think of
some dirty sort of ways along the lines of

You could do something like

errors.add_to_base(I18n.t(:‘activerecord.errors.quiz.wrong_question_number’,
:count => self.size))

with a key like

…
wrong_question_number:
one: “Must have #{count} question”
other: “Must have #{count} questions”

Thanks Henrik. So you can pass variables into the .yml file
then? (tries it…)

Hmm, i just get the string without the interpolation: eg, trying it with
a simple example, just called from the view template rather than a model
validation:

#in template
= t(:‘quiz.attributes.description’, :size => “#{@quiz.size}”)

#in .config/locales/en.yml
quiz:
attributes:
description: “Description for your #{size} question quiz”

#rendered out
Description for your #{size} question quiz

Do i need to change my setup to enable this variable-passing? I’m just
using all of the basic I18n in rails 2.3.4.

thanks, max

4

You have to change this:
t(:‘quiz.attributes.description’, :size => @quiz.size)

In the view you pass the varible without direct to hash.

2010/3/26 Max W. [email protected]

some dirty sort of ways along the lines of
…

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5

Thanks Andres, but that gives the same result.

= t(:‘quiz.attributes.description’, :size => @quiz.size)

gives

Description for your #{size} question quiz

Surely it wouldn’t make any difference anyway? The string interpolation
would happen before the t method is called, right? So it would just be
like passing a string through. And if it can take integers dynamically
then surely it can take strings dynamically. Seems my problem is that
it’s not taking anything dynamically.

6

On Fri, Mar 26, 2010 at 14:46, Max W. [email protected]
wrote:

 description: "Description for your {{size}} question quiz"

Oops, yeah, I should have added an “off the top of my head” :slight_smile: Stupid
mistake on my part. Glad you got it working!

7

Solved it: This part of the I18n documentation showed me how:

The problem was the syntax for string interpolation in the .yml
file. You don’t do this:

  description: "Description for your #{size} question quiz"

But instead, do this:

  description: "Description for your {{size}} question quiz"

Thanks all. Max

8

Henrik — wrote:

On Fri, Mar 26, 2010 at 14:46, Max W. [email protected]
wrote:

� � �description: “Description for your {{size}} question quiz”
Oops, yeah, I should have added an “off the top of my head” :slight_smile: Stupid
mistake on my part. Glad you got it working!

No worries, cheers :slight_smile: