Takes a hash of defaults and a hash of requirements, and assigns them to
the segments. Any unused requirements (which do not correspond to a
segment) are returned as a hash.
# File actionpack/lib/action_controller/routing/builder.rb, line 80
def assign_route_options(segments, defaults, requirements)
route_requirements = {} # Requirements that do not belong to a segment
segment_named = Proc.new do |key|
segments.detect { |segment| segment.key == key if segment.respond_to?(:key) }
end
requirements.each do |key, requirement|
segment = segment_named[key]
if segment
raise TypeError, "#{key}: requirements on a path segment must be regular expressions" unless requirement.is_a?(Regexp)
if requirement.source =~ %r{\A(\\A|\^)|(\\Z|\\z|\$)\Z}
raise ArgumentError, "Regexp anchor characters are not allowed in routing requirements: #{requirement.inspect}"
end
if requirement.multiline?
raise ArgumentError, "Regexp multiline option not allowed in routing requirements: #{requirement.inspect}"
end
segment.regexp = requirement
else
route_requirements[key] = requirement
end
end
defaults.each do |key, default|
segment = segment_named[key]
raise ArgumentError, "#{key}: No matching segment exists; cannot assign default" unless segment
segment.is_optional = true
segment.default = default.to_param if default
end
assign_default_route_options(segments)
ensure_required_segments(segments)
route_requirements
end
