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60 lines
2.1 KiB
Ruby
60 lines
2.1 KiB
Ruby
require 'active_support/core_ext/hash/reverse_merge'
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module ActiveModel
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# ActiveModel::Translation provides integration between your object and
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# the Rails internationalization (i18n) framework.
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#
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# A minimal implementation could be:
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#
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# class TranslatedPerson
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# extend ActiveModel::Translation
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# end
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#
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# TranslatedPerson.human_attribute_name('my_attribue')
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# #=> "My attribute"
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#
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# This also provides the required class methods for hooking into the
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# Rails internationalization API, including being able to define a
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# class based i18n_scope and lookup_ancestors to find translations in
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# parent classes.
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module Translation
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include ActiveModel::Naming
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# Returns the i18n_scope for the class. Overwrite if you want custom lookup.
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def i18n_scope
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:activemodel
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end
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# When localizing a string, goes through the lookup returned by this method.
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# Used in ActiveModel::Name#human, ActiveModel::Errors#full_messages and
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# ActiveModel::Translation#human_attribute_name.
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def lookup_ancestors
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self.ancestors.select { |x| x.respond_to?(:model_name) }
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end
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# Transforms attributes names into a more human format, such as "First name" instead of "first_name".
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#
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# Person.human_attribute_name("first_name") # => "First name"
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#
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# Specify +options+ with additional translating options.
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def human_attribute_name(attribute, options = {})
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defaults = lookup_ancestors.map do |klass|
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:"#{self.i18n_scope}.attributes.#{klass.model_name.underscore}.#{attribute}"
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end
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defaults << :"attributes.#{attribute}"
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defaults << options.delete(:default) if options[:default]
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defaults << attribute.to_s.humanize
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options.reverse_merge! :count => 1, :default => defaults
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I18n.translate(defaults.shift, options)
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end
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# Model.human_name is deprecated. Use Model.model_name.human instead.
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def human_name(*args)
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ActiveSupport::Deprecation.warn("human_name has been deprecated, please use model_name.human instead", caller[0,5])
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model_name.human(*args)
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end
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end
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end
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