Rails - i18ncheatsheet

RUBY
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t('my.messages.hello')
# 和 'my.messages.hello' 一样
t(:hello, scope: 'my.messages')
t(:hello, scope: [:my, :messages])
t('my.messages.hello', default: "Hello")

YML
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en:
  my:
    messages:
      hello: "Hello"

RUBY
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t('hello', name: "John")

YML
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hello: "Hello %{name}"

RUBY
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# 在 'books/index' 页面中
t('.title')

YML
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en:
  books:
    index:
      title: "Título"

RUBY
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t(:inbox, count: 1)  #=> 'one message'
t(:inbox, count: 2)  #=> '2 messages'

YML
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inbox:
  one: 'one message',
  other: '%{count} messages'

RUBY
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l(Time.now)
l(Time.now, format: :short)

YML
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en:
  time:
    formats:
      default: "%a, %d %b %Y %H:%M:%S %z"
      long: "%B %d, %Y %H:%M"
      short: "%d %b %H:%M"

RUBY
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l(Date.today)

YML
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en:
  date:
    formats:
      default: "%Y-%m-%d" # 2015-06-25
      long: "%B %d, %Y" # June 25, 2015
      short: "%b %d" # Jun 25

RUBY
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User.model_name.human            #=> "User"
Child.model_name.human(count: 2) #=> "Children"

YML
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en:
  activerecord:
    models:
      user: "User"
      child:
        one: "Child"
        other: "Children"

RUBY
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User.human_attribute_for :name   #=> "Name"

YML
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en:
  activerecord:
    attributes:
      user:
        # activerecord.attributes.<model>.<field>
        name: "Name"
        email: "Email"

RUBY
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error_messages_for(...)

YML
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activerecord:
  errors:
    models:
      venue:
        attributes:
          name:
            blank: "Please enter a name."

YML
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activerecord.errors.models.[model_name].attributes.[attribute_name].[error]
activerecord.errors.models.[model_name].[error]
activerecord.errors.messages.[error]
errors.attributes.[attribute_name].[error]
errors.messages.[error]

YML
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validates
confirmation - :confirmation
acceptance   - :accepted
presence     - :blank
length       - :too_short (%{count})
length       - :too_long (%{count})
length       - :wrong_length (%{count})
uniqueness   - :taken
format       - :invalid
numericality - :not_a_number

RUBY
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form_for @post do
  f.label :body

YML
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helpers:
  # helpers.label.<model>.<field>
  label:
    post:
      body: "Your body text"

RUBY
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form_for @post do
  f.submit

YML
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helpers:
  submit:
    # helpers.submit.<action>
    create: "Create a %{model}"
    update: "Confirm changes to %{model}"
    # helpers.submit.<model>.<action>
    article:
      create: "Publish article"
      update: "Update article"

RUBY
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number_to_delimited(2000)             #=> "2,000"
number_to_currency(12.3)              #=> "$12.30"
number_to_percentage(0.3)             #=> "30%"
number_to_rounded(3.14, precision: 0) #=> "3"
number_to_human(12_000)               #=> "12 Thousand"
number_to_human_size(12345)           #=> "12.3 kb"

RUBY
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number_to_delimited(n)

YML
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number:
  format:
    separator: "."
    delimiter: ","
    precision: 3
    significant: false
    strip_insignificant_zeroes: false

RUBY
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number_to_currency(n)

YML
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number:
  currency:
    format:
      format: "%u%n" # %u = unit, %n = number
      unit: "$"
      separator: "."
      delimiter: ","
      precision: 3
      # (see number.format)

RUBY
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number_to_percentage(n)

YML
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number:
  percentage:
    format:
      format: "%n%"
      # (see number.format)