# File lib/sinatra/base.rb, line 861 def initialize(app = nil) super() @app = app @template_cache = Tilt::Cache.new yield self if block_given? end
Access settings defined with ::set.
# File lib/sinatra/base.rb, line 897 def self.settings self end
add a filter
# File lib/sinatra/base.rb, line 1317 def add_filter(type, path = nil, options = {}, &block) path, options = //, path if path.respond_to?(:each_pair) filters[type] << compile!(type, path || //, block, options) end
Define an after filter; runs after all requests within the same context as route handlers and may access/modify the request and response.
# File lib/sinatra/base.rb, line 1312 def after(path = nil, options = {}, &block) add_filter(:after, path, options, &block) end
Define a before filter; runs before all requests within the same context as route handlers and may access/modify the request and response.
# File lib/sinatra/base.rb, line 1305 def before(path = nil, options = {}, &block) add_filter(:before, path, options, &block) end
Creates a Rack::Builder instance
with all the middleware set up and the given app
as end point.
# File lib/sinatra/base.rb, line 1440 def build(app) builder = Rack::Builder.new setup_default_middleware builder setup_middleware builder builder.run app builder end
# File lib/sinatra/base.rb, line 1448 def call(env) synchronize { prototype.call(env) } end
Like Kernel#caller but excluding certain magic entries and without line / method information; the resulting array contains filenames only.
# File lib/sinatra/base.rb, line 1454 def caller_files cleaned_caller(1).flatten end
Like ::caller_files, but containing Arrays rather than strings with the first element being the file, and the second being the line.
# File lib/sinatra/base.rb, line 1460 def caller_locations cleaned_caller 2 end
Like Kernel#caller but excluding certain magic entries
# File lib/sinatra/base.rb, line 1736 def cleaned_caller(keep = 3) caller(1). map { |line| line.split(/:(?=\d|in )/, 3)[0,keep] }. reject { |file, *_| CALLERS_TO_IGNORE.any? { |pattern| file =~ pattern } } end
# File lib/sinatra/base.rb, line 1547 def compile(path) if path.respond_to? :to_str keys = [] # We append a / at the end if there was one. # Reason: Splitting does not split off an empty # string at the end if the split separator # is at the end. # postfix = '/' if path =~ /\/\z/ # Split the path into pieces in between forward slashes. # segments = path.split('/').map! do |segment| ignore = [] # Special character handling. # pattern = segment.to_str.gsub(/[^\?\%\\/\:\*\w]/) do |c| ignore << escaped(c).join if c.match(/[\.@]/) patt = encoded(c) patt.gsub(/%[\da-fA-F]{2}/) do |match| match.split(//).map {|char| char =~ /[A-Z]/ ? "[#{char}#{char.tr('A-Z', 'a-z')}]" : char}.join end end ignore = ignore.uniq.join # Key handling. # pattern.gsub(/((:\w+)|\*)/) do |match| if match == "*" keys << 'splat' "(.*?)" else keys << $2[1..-1] ignore_pattern = safe_ignore(ignore) ignore_pattern end end end # Special case handling. # if segment = segments.pop if segment.match(/\[\^\\./) parts = segment.rpartition(/\[\^\\./) parts[1] = '[^' segments << parts.join else segments << segment end end [/\A#{segments.join('/')}#{postfix}\z/, keys] elsif path.respond_to?(:keys) && path.respond_to?(:match) [path, path.keys] elsif path.respond_to?(:names) && path.respond_to?(:match) [path, path.names] elsif path.respond_to? :match [path, []] else raise TypeError, path end end
# File lib/sinatra/base.rb, line 1532 def compile!(verb, path, block, options = {}) options.each_pair { |option, args| send(option, *args) } method_name = "#{verb} #{path}" unbound_method = generate_method(method_name, &block) pattern, keys = compile path conditions, @conditions = @conditions, [] wrapper = block.arity != 0 ? proc { |a,p| unbound_method.bind(a).call(*p) } : proc { |a,p| unbound_method.bind(a).call } wrapper.instance_variable_set(:@route_name, method_name) [ pattern, keys, conditions, wrapper ] end
Add a route condition. The route is considered non-matching when the block returns false.
# File lib/sinatra/base.rb, line 1324 def condition(name = "#{caller.first[/`.*'/]} condition", &block) @conditions << generate_method(name, &block) end
Set configuration options for Sinatra and/or the app. Allows scoping of settings for certain environments.
# File lib/sinatra/base.rb, line 1384 def configure(*envs, &block) yield self if envs.empty? || envs.include?(environment.to_sym) end
Dynamically defines a method on settings.
# File lib/sinatra/base.rb, line 1467 def define_singleton(name, content = Proc.new) # replace with call to singleton_class once we're 1.9 only (class << self; self; end).class_eval do undef_method(name) if method_defined? name String === content ? class_eval("def #{name}() #{content}; end") : define_method(name, &content) end end
# File lib/sinatra/base.rb, line 1353 def delete(path, opts = {}, &bk) route 'DELETE', path, opts, &bk end
# File lib/sinatra/base.rb, line 1704 def detect_rack_handler servers = Array(server) servers.each do |server_name| begin return Rack::Handler.get(server_name.to_s) rescue LoadError, NameError end end fail "Server handler (#{servers.join(',')}) not found." end
# File lib/sinatra/base.rb, line 1378 def development?; environment == :development end
Same as calling `set :option, false` for each of the given options.
# File lib/sinatra/base.rb, line 1221 def disable(*opts) opts.each { |key| set(key, false) } end
Same as calling `set :option, true` for each of the given options.
# File lib/sinatra/base.rb, line 1216 def enable(*opts) opts.each { |key| set(key, true) } end
# File lib/sinatra/base.rb, line 1613 def encoded(char) enc = URI.escape(char) enc = "(?:#{escaped(char, enc).join('|')})" if enc == char enc = "(?:#{enc}|#{encoded('+')})" if char == " " enc end
Define a custom error handler. Optionally takes either an Exception class, or an HTTP status code to specify which errors should be handled.
# File lib/sinatra/base.rb, line 1228 def error(*codes, &block) args = compile! "ERROR", //, block codes = codes.map { |c| Array(c) }.flatten codes << Exception if codes.empty? codes.each { |c| (@errors[c] ||= []) << args } end
# File lib/sinatra/base.rb, line 1620 def escaped(char, enc = URI.escape(char)) [Regexp.escape(enc), URI.escape(char, /./)] end
Extension modules registered on this class and all superclasses.
# File lib/sinatra/base.rb, line 1161 def extensions if superclass.respond_to?(:extensions) (@extensions + superclass.extensions).uniq else @extensions end end
# File lib/sinatra/base.rb, line 1751 def self.force_encoding(data, encoding = default_encoding) return if data == settings || data.is_a?(Tempfile) if data.respond_to? :force_encoding data.force_encoding(encoding).encode! elsif data.respond_to? :each_value data.each_value { |v| force_encoding(v, encoding) } elsif data.respond_to? :each data.each { |v| force_encoding(v, encoding) } end data end
# File lib/sinatra/base.rb, line 1525 def generate_method(method_name, &block) define_method(method_name, &block) method = instance_method method_name remove_method method_name method end
Defining a `GET` handler also automatically defines a `HEAD` handler.
# File lib/sinatra/base.rb, line 1343 def get(path, opts = {}, &block) conditions = @conditions.dup route('GET', path, opts, &block) @conditions = conditions route('HEAD', path, opts, &block) end
# File lib/sinatra/base.rb, line 1354 def head(path, opts = {}, &bk) route 'HEAD', path, opts, &bk end
Makes the methods defined in the block and in the Modules given in `extensions` available to the handlers and templates
# File lib/sinatra/base.rb, line 1362 def helpers(*extensions, &block) class_eval(&block) if block_given? include(*extensions) if extensions.any? end
Condition for matching host name. Parameter might be String or Regexp.
# File lib/sinatra/base.rb, line 1476 def host_name(pattern) condition { pattern === request.host } end
# File lib/sinatra/base.rb, line 1715 def inherited(subclass) subclass.reset! subclass.set :app_file, caller_files.first unless subclass.app_file? super end
Load embedded templates from the file; uses the caller's __FILE__ when no file is specified.
# File lib/sinatra/base.rb, line 1254 def inline_templates=(file = nil) file = (file.nil? || file == true) ? (caller_files.first || File.expand_path($0)) : file begin io = ::IO.respond_to?(:binread) ? ::IO.binread(file) : ::IO.read(file) app, data = io.gsub("\r\n", "\n").split(/^__END__$/, 2) rescue Errno::ENOENT app, data = nil end if data if app and app =~ /([^\n]*\n)?#[^\n]*coding: *(\S+)/ encoding = $2 else encoding = settings.default_encoding end lines = app.count("\n") + 1 template = nil force_encoding data, encoding data.each_line do |line| lines += 1 if line =~ /^@@\s*(.*\S)\s*$/ template = force_encoding('', encoding) templates[$1.to_sym] = [template, file, lines] elsif template template << line end end end end
# File lib/sinatra/base.rb, line 1521 def invoke_hook(name, *args) extensions.each { |e| e.send(name, *args) if e.respond_to?(name) } end
Define the layout template. The block must return the template source.
# File lib/sinatra/base.rb, line 1248 def layout(name = :layout, &block) template name, &block end
# File lib/sinatra/base.rb, line 1357 def link(path, opts = {}, &bk) route 'LINK', path, opts, &bk end
Middleware used in this class and all superclasses.
# File lib/sinatra/base.rb, line 1170 def middleware if superclass.respond_to?(:middleware) superclass.middleware + @middleware else @middleware end end
Lookup or register a mime type in Rack's mime registry.
# File lib/sinatra/base.rb, line 1286 def mime_type(type, value = nil) return type if type.nil? return type.to_s if type.to_s.include?('/') type = ".#{type}" unless type.to_s[0] == . return Rack::Mime.mime_type(type, nil) unless value Rack::Mime::MIME_TYPES[type] = value end
provides all mime types matching type, including deprecated types:
mime_types :html # => ['text/html'] mime_types :js # => ['application/javascript', 'text/javascript']
# File lib/sinatra/base.rb, line 1297 def mime_types(type) type = mime_type type type =~ /^application\/(xml|javascript)$/ ? [type, "text/#$1"] : [type] end
Create a new instance of the class fronted by its middleware pipeline. The object is guaranteed to respond to call but may not be an instance of the class new was called on.
# File lib/sinatra/base.rb, line 1433 def new(*args, &bk) instance = new!(*args, &bk) Wrapper.new(build(instance).to_app, instance) end
Sugar for `error(404) { … }`
# File lib/sinatra/base.rb, line 1236 def not_found(&block) error(404, &block) error(Sinatra::NotFound, &block) end
# File lib/sinatra/base.rb, line 1355 def options(path, opts = {}, &bk) route 'OPTIONS', path, opts, &bk end
# File lib/sinatra/base.rb, line 1356 def patch(path, opts = {}, &bk) route 'PATCH', path, opts, &bk end
# File lib/sinatra/base.rb, line 1352 def post(path, opts = {}, &bk) route 'POST', path, opts, &bk end
# File lib/sinatra/base.rb, line 1379 def production?; environment == :production end
The prototype instance used to process requests.
# File lib/sinatra/base.rb, line 1423 def prototype @prototype ||= new end
Condition for matching mimetypes. Accepts file extensions.
# File lib/sinatra/base.rb, line 1495 def provides(*types) types.map! { |t| mime_types(t) } types.flatten! condition do if type = response['Content-Type'] types.include? type or types.include? type[/^[^;]+/] elsif type = request.preferred_type(types) params = (type.respond_to?(:params) ? type.params : {}) content_type(type, params) true else false end end end
# File lib/sinatra/base.rb, line 1328 def public=(value) warn ":public is no longer used to avoid overloading Module#public, use :public_dir instead" set(:public_folder, value) end
# File lib/sinatra/base.rb, line 1337 def public_dir public_folder end
# File lib/sinatra/base.rb, line 1333 def public_dir=(value) self.public_folder = value end
# File lib/sinatra/base.rb, line 1351 def put(path, opts = {}, &bk) route 'PUT', path, opts, &bk end
# File lib/sinatra/base.rb, line 1394 def quit!(server, handler_name) # Use Thin's hard #stop! if available, otherwise just #stop. server.respond_to?(:stop!) ? server.stop! : server.stop $stderr.puts "\n== Sinatra has ended his set (crowd applauds)" unless handler_name =~/cgi/ end
Register an extension. Alternatively take a block from which an extension will be created and registered on the fly.
# File lib/sinatra/base.rb, line 1369 def register(*extensions, &block) extensions << Module.new(&block) if block_given? @extensions += extensions extensions.each do |extension| extend extension extension.registered(self) if extension.respond_to?(:registered) end end
Removes all routes, filters, middleware and extension hooks from the current class (not routes/filters/… defined by its superclass).
# File lib/sinatra/base.rb, line 1144 def reset! @conditions = [] @routes = {} @filters = {:before => [], :after => []} @errors = {} @middleware = [] @prototype = nil @extensions = [] if superclass.respond_to?(:templates) @templates = Hash.new { |hash,key| superclass.templates[key] } else @templates = {} end end
# File lib/sinatra/base.rb, line 1511 def route(verb, path, options = {}, &block) # Because of self.options.host host_name(options.delete(:host)) if options.key?(:host) enable :empty_path_info if path == "" and empty_path_info.nil? signature = compile!(verb, path, block, options) (@routes[verb] ||= []) << signature invoke_hook(:route_added, verb, path, block) signature end
Run the Sinatra app as a self-hosted server using Thin, Puma, Mongrel, or WEBrick (in that order). If given a block, will call with the constructed handler once we have taken the stage.
# File lib/sinatra/base.rb, line 1403 def run!(options = {}) set options handler = detect_rack_handler handler_name = handler.name.gsub(/.*::/, '') server_settings = settings.respond_to?(:server_settings) ? settings.server_settings : {} handler.run self, server_settings.merge(:Port => port, :Host => bind) do |server| unless handler_name =~ /cgi/ $stderr.puts "== Sinatra/#{Sinatra::VERSION} has taken the stage " + "on #{port} for #{environment} with backup from #{handler_name}" end [:INT, :TERM].each { |sig| trap(sig) { quit!(server, handler_name) } } server.threaded = settings.threaded if server.respond_to? :threaded= set :running, true yield server if block_given? end rescue Errno::EADDRINUSE $stderr.puts "== Someone is already performing on port #{port}!" end
# File lib/sinatra/base.rb, line 1624 def safe_ignore(ignore) unsafe_ignore = [] ignore = ignore.gsub(/%[\da-fA-F]{2}/) do |hex| unsafe_ignore << hex[1..2] '' end unsafe_patterns = unsafe_ignore.map do |unsafe| chars = unsafe.split(//).map do |char| if char =~ /[A-Z]/ char <<= char.tr('A-Z', 'a-z') end char end "|(?:%[^#{chars[0]}].|%[#{chars[0]}][^#{chars[1]}])" end if unsafe_patterns.length > 0 "((?:[^#{ignore}/?#%]#{unsafe_patterns.join()})+)" else "([^#{ignore}/?#]+)" end end
Sets an option to the given value. If the value is a proc, the proc will be called every time the option is accessed.
# File lib/sinatra/base.rb, line 1180 def set(option, value = (not_set = true), ignore_setter = false, &block) raise ArgumentError if block and !not_set value, not_set = block, false if block if not_set raise ArgumentError unless option.respond_to?(:each) option.each { |k,v| set(k, v) } return self end if respond_to?("#{option}=") and not ignore_setter return __send__("#{option}=", value) end setter = proc { |val| set option, val, true } getter = proc { value } case value when Proc getter = value when Symbol, Fixnum, FalseClass, TrueClass, NilClass getter = value.inspect when Hash setter = proc do |val| val = value.merge val if Hash === val set option, val, true end end define_singleton("#{option}=", setter) if setter define_singleton(option, getter) if getter define_singleton("#{option}?", "!!#{option}") unless method_defined? "#{option}?" self end
# File lib/sinatra/base.rb, line 1674 def setup_common_logger(builder) builder.use Sinatra::CommonLogger end
# File lib/sinatra/base.rb, line 1678 def setup_custom_logger(builder) if logging.respond_to? :to_int builder.use Rack::Logger, logging else builder.use Rack::Logger end end
# File lib/sinatra/base.rb, line 1647 def setup_default_middleware(builder) builder.use ExtendedRack builder.use ShowExceptions if show_exceptions? builder.use Rack::MethodOverride if method_override? builder.use Rack::Head setup_logging builder setup_sessions builder setup_protection builder end
# File lib/sinatra/base.rb, line 1661 def setup_logging(builder) if logging? setup_common_logger(builder) setup_custom_logger(builder) elsif logging == false setup_null_logger(builder) end end
# File lib/sinatra/base.rb, line 1657 def setup_middleware(builder) middleware.each { |c,a,b| builder.use(c, *a, &b) } end
# File lib/sinatra/base.rb, line 1670 def setup_null_logger(builder) builder.use Rack::NullLogger end
# File lib/sinatra/base.rb, line 1686 def setup_protection(builder) return unless protection? options = Hash === protection ? protection.dup : {} protect_session = options.fetch(:session) { sessions? } options[:except] = Array options[:except] options[:except] += [:session_hijacking, :remote_token] unless protect_session options[:reaction] ||= :drop_session builder.use Rack::Protection, options end
# File lib/sinatra/base.rb, line 1696 def setup_sessions(builder) return unless sessions? options = {} options[:secret] = session_secret if session_secret? options.merge! sessions.to_hash if sessions.respond_to? :to_hash builder.use Rack::Session::Cookie, options end
# File lib/sinatra/base.rb, line 1722 def synchronize(&block) if lock? @@mutex.synchronize(&block) else yield end end
Define a named template. The block must return the template source.
# File lib/sinatra/base.rb, line 1242 def template(name, &block) filename, line = caller_locations.first templates[name] = [block, filename, line.to_i] end
# File lib/sinatra/base.rb, line 1380 def test?; environment == :test end
# File lib/sinatra/base.rb, line 1358 def unlink(path, opts = {}, &bk) route 'UNLINK', path, opts, &bk end
Use the specified Rack middleware
# File lib/sinatra/base.rb, line 1389 def use(middleware, *args, &block) @prototype = nil @middleware << [middleware, args, block] end
Condition for matching user agent. Parameter should be Regexp. Will set params.
# File lib/sinatra/base.rb, line 1482 def user_agent(pattern) condition do if request.user_agent.to_s =~ pattern @params[:agent] = $~[1..-1] true else false end end end
used for deprecation warnings
# File lib/sinatra/base.rb, line 1731 def warn(message) super message + "\n\tfrom #{cleaned_caller.first.join(':')}" end
Rack call interface.
# File lib/sinatra/base.rb, line 869 def call(env) dup.call!(env) end
Forward the request to the downstream app – middleware only.
# File lib/sinatra/base.rb, line 927 def forward fail "downstream app not set" unless @app.respond_to? :call status, headers, body = @app.call env @response.status = status @response.body = body @response.headers.merge! headers nil end
Exit the current block, halts any further processing of the request, and returns the specified response.
# File lib/sinatra/base.rb, line 914 def halt(*response) response = response.first if response.length == 1 throw :halt, response end
# File lib/sinatra/base.rb, line 906 def options warn "Sinatra::Base#options is deprecated and will be removed, " "use #settings instead." settings end
Pass control to the next matching route. If there are no more matching routes, Sinatra will return a 404 response.
# File lib/sinatra/base.rb, line 922 def pass(&block) throw :pass, block end
Access settings defined with ::set.
# File lib/sinatra/base.rb, line 902 def settings self.class.settings end
Dispatch a request with error handling.
# File lib/sinatra/base.rb, line 1055 def dispatch! invoke do static! if settings.static? && (request.get? || request.head?) filter! :before route! end rescue ::Exception => boom invoke { handle_exception!(boom) } ensure begin filter! :after unless env['sinatra.static_file'] rescue ::Exception => boom invoke { handle_exception!(boom) } unless @env['sinatra.error'] end end
# File lib/sinatra/base.rb, line 1117 def dump_errors!(boom) msg = ["#{boom.class} - #{boom.message}:", *boom.backtrace].join("\n\t") @env['rack.errors'].puts(msg) end
Find an custom error block for the key(s) specified.
# File lib/sinatra/base.rb, line 1102 def error_block!(key, *block_params) base = settings while base.respond_to?(:errors) next base = base.superclass unless args_array = base.errors[key] args_array.reverse_each do |args| first = args == args_array.first args += [block_params] resp = process_route(*args) return resp unless resp.nil? && !first end end return false unless key.respond_to? :superclass and key.superclass < Exception error_block!(key.superclass, *block_params) end
Run filters defined on the class and all superclasses.
# File lib/sinatra/base.rb, line 939 def filter!(type, base = settings) filter! type, base.superclass if base.superclass.respond_to?(:filters) base.filters[type].each { |args| process_route(*args) } end
Fixes encoding issues by
defaulting to UTF-8
casting params to Encoding.default_external
The latter might not be necessary if Rack handles it one day. Keep an eye on Rack's LH #100.
# File lib/sinatra/base.rb, line 1749 def force_encoding(*args) settings.force_encoding(*args) end
Error handling during requests.
# File lib/sinatra/base.rb, line 1072 def handle_exception!(boom) @env['sinatra.error'] = boom if boom.respond_to? :http_status status(boom.http_status) elsif settings.use_code? and boom.respond_to? :code and boom.code.between? 400, 599 status(boom.code) else status(500) end status(500) unless status.between? 400, 599 if server_error? dump_errors! boom if settings.dump_errors? raise boom if settings.show_exceptions? and settings.show_exceptions != :after_handler end if not_found? headers['X-Cascade'] = 'pass' if settings.x_cascade? body '<h1>Not Found</h1>' end res = error_block!(boom.class, boom) || error_block!(status, boom) return res if res or not server_error? raise boom if settings.raise_errors? or settings.show_exceptions? error_block! Exception, boom end
Creates a Hash with indifferent access.
# File lib/sinatra/base.rb, line 1035 def indifferent_hash Hash.new {|hash,key| hash[key.to_s] if Symbol === key } end
Enable string or symbol key access to the nested params hash.
# File lib/sinatra/base.rb, line 1021 def indifferent_params(object) case object when Hash new_hash = indifferent_hash object.each { |key, value| new_hash[key] = indifferent_params(value) } new_hash when Array object.map { |item| indifferent_params(item) } else object end end
Run the block with 'throw :halt' support and apply result to the response.
# File lib/sinatra/base.rb, line 1040 def invoke res = catch(:halt) { yield } res = [res] if Fixnum === res or String === res if Array === res and Fixnum === res.first res = res.dup status(res.shift) body(res.pop) headers(*res) elsif res.respond_to? :each body res end nil # avoid double setting the same response tuple twice end
If the current request matches pattern and conditions, fill params with keys and call the given block. Revert params afterwards.
Returns pass block.
# File lib/sinatra/base.rb, line 974 def process_route(pattern, keys, conditions, block = nil, values = []) route = @request.path_info route = '/' if route.empty? and not settings.empty_path_info? return unless match = pattern.match(route) values += match.captures.to_a.map { |v| force_encoding URI.unescape(v) if v } if values.any? original, @params = params, params.merge('splat' => [], 'captures' => values) keys.zip(values) { |k,v| Array === @params[k] ? @params[k] << v : @params[k] = v if v } end catch(:pass) do conditions.each { |c| throw :pass if c.bind(self).call == false } block ? block[self, values] : yield(self, values) end ensure @params = original if original end
Run routes defined on the class and all superclasses.
# File lib/sinatra/base.rb, line 945 def route!(base = settings, pass_block = nil) if routes = base.routes[@request.request_method] routes.each do |pattern, keys, conditions, block| pass_block = process_route(pattern, keys, conditions) do |*args| env['sinatra.route'] = block.instance_variable_get(:@route_name) route_eval { block[*args] } end end end # Run routes defined in superclass. if base.superclass.respond_to?(:routes) return route!(base.superclass, pass_block) end route_eval(&pass_block) if pass_block route_missing end
Run a route block and throw :halt with the result.
# File lib/sinatra/base.rb, line 965 def route_eval throw :halt, yield end
No matching route was found or all routes passed. The default implementation is to forward the request downstream when running as middleware (@app is non-nil); when no downstream app is set, raise a NotFound exception. Subclasses can override this method to perform custom route miss logic.
# File lib/sinatra/base.rb, line 998 def route_missing if @app forward else raise NotFound end end
Attempt to serve static files from public directory. Throws :halt when a matching file is found, returns nil otherwise.
# File lib/sinatra/base.rb, line 1008 def static! return if (public_dir = settings.public_folder).nil? public_dir = File.expand_path(public_dir) path = File.expand_path(public_dir + unescape(request.path_info)) return unless path.start_with?(public_dir) and File.file?(path) env['sinatra.static_file'] = path cache_control(*settings.static_cache_control) if settings.static_cache_control? send_file path, :disposition => nil end