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# frozen_string_literal: true
module ActionController
module Head
# 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.
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.dasherize.split("-").each { |v| v[0] = v[0].chr.upcase }.join("-")] = value.to_s
end
self.status = status
self.location = url_for(location) if location
self.response_body = ""
if include_content?(response_code)
self.content_type = content_type || (Mime[formats.first] if formats)
response.charset = false
end
true
end
private
def include_content?(status)
case status
when 100..199
false
when 204, 205, 304
false
else
true
end
end
end
end
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90 entries across 90 versions & 5 rubygems