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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
@rewritten_path = @request.path ? @request.path.dup : ""
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 << options[:application_prefix] if options[:application_prefix]
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) if options[:params]
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
def action_name(options, action_prefix = nil, action_suffix = nil)
ensure_slash_suffix(options, :action_prefix)
ensure_slash_prefix(options, :action_suffix)
prefix = options[:action_prefix] || action_prefix || ""
suffix = options[:action] == "index" ? "" : (options[:action_suffix] || action_suffix || "")
name = (options[:action] == "index" ? "" : options[:action]) || ""
return prefix + name + suffix
end
def controller_name(options, controller_prefix)
ensure_slash_suffix(options, :controller_prefix)
controller_name = case options[:controller_prefix]
when String: options[:controller_prefix]
when false : ""
when nil : controller_prefix || ""
end
controller_name << (options[:controller] + "/") if options[:controller]
return controller_name
end
def path_params_in_list(options)
options[:path_params].inject("") { |path, pair| path += "/#{pair.last}" }
end
def ensure_slash_suffix(options, key)
options[key] = options[key] + "/" if options[key] && !options[key].empty? && options[key][-1..-1] != "/"
end
def ensure_slash_prefix(options, key)
options[key] = "/" + options[key] if options[key] && !options[key].empty? && options[key][0..1] != "/"
end
def include_id_in_path_params(options)
options[:path_params] = (options[:path_params] || {}).merge({"id" => options[:id]}) if options[:id]
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
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