method

head

v6.1.3.1 - Show latest stable - 0 notes - Class: ActionController::Head

head(status, options = {}) public

Returns 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) head :created, location: @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

See Rack::Utils::SYMBOL_TO_STATUS_CODE for a full list of valid status symbols.

Show source

# File actionpack/lib/action_controller/metal/head.rb, line 21 def head(status, options = {}) if status.is_a?(Hash) raise ArgumentError, "#{status.inspect} is not a valid value for `status`." end status ||= :ok location = options.delete(:location) content_type = options.delete(:content_type) options.each do |key, value| headers[key.to_s.split(/[-_]/).each { |v| v[0] = v[0].upcase }.join("-")] = value.to_s end self.status = status self.location = url_for(location) if location if include_content?(response_code) unless self.media_type self.content_type = content_type || (Mime[formats.first] if formats) || Mime[:html] end response.charset = false end self.response_body = "" true end

head

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