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module ActionView
module Helpers
module Tags
class CollectionCheckBoxes < CollectionRadioButtons
delegate :check_box, :label, :to => :@template_object
def render
rendered_collection = render_collection do |value, text, default_html_options|
default_html_options[:multiple] = true
if block_given?
yield sanitize_attribute_name(value), text, value, default_html_options
else
check_box(@object_name, @method_name, default_html_options, value, nil) +
label(@object_name, sanitize_attribute_name(value), text, :class => "collection_check_boxes")
end
end
# Append a hidden field to make sure something will be sent back to the
# server if all check boxes are unchecked.
hidden = @template_object.hidden_field_tag(tag_name_multiple, "", :id => nil)
wrap_rendered_collection(rendered_collection + hidden)
end
end
end
end
end
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