Module: ActionView::Helpers::Tags::Placeholderable

Included in:
TextArea, TextField
Defined in:
lib/action_view/helpers/tags/placeholderable.rb

Overview

:nodoc:

Instance Method Summary collapse

Instance Method Details

#initializeObject


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# File 'lib/action_view/helpers/tags/placeholderable.rb', line 5

def initialize(*)
  super

  if tag_value = @options[:placeholder]
    placeholder = tag_value if tag_value.is_a?(String)

    object_name = @object_name.gsub(/\[(.*)_attributes\]\[\d+\]/, '.\1')
    method_and_value = tag_value.is_a?(TrueClass) ? @method_name : "#{@method_name}.#{tag_value}"

    if object.respond_to?(:to_model)
      key = object.class.model_name.i18n_key
      i18n_default = ["#{key}.#{method_and_value}".to_sym, ""]
    end

    i18n_default ||= ""
    placeholder ||= I18n.t("#{object_name}.#{method_and_value}", :default => i18n_default, :scope => "helpers.placeholder").presence

    placeholder ||= if object && object.class.respond_to?(:human_attribute_name)
                  object.class.human_attribute_name(method_and_value)
                end

    placeholder ||= @method_name.humanize

    @options[:placeholder] = placeholder
  end
end