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module ActionController
module Head
extend ActiveSupport::Concern
include ActionController::UrlFor
# Return a response that has no content (merely headers). The options
# argument is interpreted to be a hash of header names and values.
# This allows you to easily return a response that consists only of
# significant headers:
#
# head :created, :location => person_path(@person)
#
# It can also be used to return exceptional conditions:
#
# return head(:method_not_allowed) unless request.post?
# return head(:bad_request) unless valid_request?
# render
def head(status, options = {})
options, status = status, nil if status.is_a?(Hash)
status ||= options.delete(:status) || :ok
location = options.delete(:location)
options.each do |key, value|
headers[key.to_s.dasherize.split(/-/).map { |v| v.capitalize }.join("-")] = value.to_s
end
self.status = status
self.location = url_for(location) if location
self.content_type = Mime[formats.first]
self.response_body = " "
end
end
end
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