module ActionController
# Rewrites URLs for Base.redirect_to and Base.url_for in the controller.
class UrlRewriter #:nodoc:
RESERVED_OPTIONS = [:anchor, :params, :only_path, :host, :protocol]
def initialize(request, parameters)
@request, @parameters = request, parameters
end
def rewrite(options = {})
rewrite_url(rewrite_path(options), options)
end
def to_str
"#{@request.protocol}, #{@request.host_with_port}, #{@request.path}, #{@parameters[:controller]}, #{@parameters[:action]}, #{@request.parameters.inspect}"
end
alias_method :to_s, :to_str
private
def rewrite_url(path, options)
rewritten_url = ""
rewritten_url << (options[:protocol] || @request.protocol) unless options[:only_path]
rewritten_url << (options[:host] || @request.host_with_port) unless options[:only_path]
rewritten_url << @request.relative_url_root.to_s
rewritten_url << path
rewritten_url << "##{options[:anchor]}" if options[:anchor]
return rewritten_url
end
def rewrite_path(options)
options = options.symbolize_keys
options.update((options[:params] || {}).symbolize_keys)
RESERVED_OPTIONS.each {|k| options.delete k}
path, extras = Routing::Routes.generate(options, @request)
path = "/#{path.join('/')}".chomp '/'
path = '/' if path.empty?
path += build_query_string(extras)
return path
end
# Returns a query string with escaped keys and values from the passed hash. If the passed hash contains an "id" it'll
# be added as a path element instead of a regular parameter pair.
def build_query_string(hash)
elements = []
query_string = ""
hash.each do |key, value|
key = key.to_s
key = CGI.escape key
key += '[]' if value.class == Array
value = [ value ] unless value.class == Array
value.each { |val| elements << "#{key}=#{Routing.extract_parameter_value(val)}" }
end
query_string << ("?" + elements.join("&")) unless elements.empty?
return query_string
end
end
end