interpolate(locale, string, values = {}) — I18n::Backend::Base

interpolate(locale, string, values = {})

Interpolates values into a given string.

interpolate "file %{file} opened by %%{user}", :file => 'test.txt', :user => 'Mr. X'
# => "file test.txt opened by %{user}"

Note that you have to double escape the \ when you want to escape the {{...}} key in a string (once for the string and once for the interpolation).

Parameters

locale req
string req
values opt = {}

Source

# File activesupport/lib/active_support/vendor/i18n-0.4.1/i18n/backend/base.rb, line 152
        def interpolate(locale, string, values = {})
          return string unless string.is_a?(::String) && !values.empty?
          original_values = values.dup

          preserve_encoding(string) do
            string = string.gsub(DEPRECATED_INTERPOLATION_SYNTAX_PATTERN) do
              escaped, key = $1, $2.to_sym
              if escaped
                "{{#{key}}}"
              else
                warn_syntax_deprecation!
                "%{#{key}}"
              end
            end

            keys = string.scan(INTERPOLATION_SYNTAX_PATTERN).flatten
            return string if keys.empty?

            values.each do |key, value|
              if keys.include?(key.to_s)
                value = value.call(values) if interpolate_lambda?(value, string, key)
                value = value.to_s unless value.is_a?(::String)
                values[key] = value
              else
                values.delete(key)
              end
            end

            string % values
          end
        rescue KeyError => e
          if string =~ RESERVED_KEYS_PATTERN
            raise ReservedInterpolationKey.new($1.to_sym, string)
          else
            raise MissingInterpolationArgument.new(original_values, string)
          end
        end

Defined in activesupport/lib/active_support/vendor/i18n-0.4.1/i18n/backend/base.rb line 152 · View on GitHub · Improve this page · Find usages on GitHub

Defined in I18n::Backend::Base

Signature

Parameters