Class: Sinatra::Base

Inherits:
Object
  • Object
show all
Includes:
Rack::Utils, Helpers, Templates
Defined in:
lib/sinatra/base.rb

Overview

Base class for all Sinatra applications and middleware.

Direct Known Subclasses

Application

Constant Summary collapse

URI_INSTANCE =
URI::Parser.new
CALLERS_TO_IGNORE =

:nodoc:

[ # :nodoc:
  %r{/sinatra(/(base|main|show_exceptions))?\.rb$},   # all sinatra code
  %r{lib/tilt.*\.rb$},                                # all tilt code
  /^\(.*\)$/,                                         # generated code
  %r{rubygems/(custom|core_ext/kernel)_require\.rb$}, # rubygems require hacks
  /active_support/,                                   # active_support require hacks
  %r{bundler(/(?:runtime|inline))?\.rb},              # bundler require hacks
  /<internal:/,                                       # internal in ruby >= 1.9.2
  %r{zeitwerk/kernel\.rb}                             # Zeitwerk kernel#require decorator
].freeze

Constants included from Helpers

Helpers::ETAG_KINDS, Helpers::MULTIPART_FORM_DATA_REPLACEMENT_TABLE

Class Attribute Summary collapse

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Templates

#asciidoc, #builder, #erb, #find_template, #haml, #liquid, #markaby, #markdown, #nokogiri, #rabl, #rdoc, #sass, #scss, #slim, #yajl

Methods included from Helpers

#attachment, #back, #bad_request?, #body, #cache_control, #client_error?, #content_type, #error, #etag, #expires, #headers, #informational?, #last_modified, #logger, #mime_type, #not_found, #not_found?, #redirect, #redirect?, #send_file, #server_error?, #session, #status, #stream, #success?, #time_for, #uri

Constructor Details

#initialize(app = nil, **_kwargs) {|_self| ... } ⇒ Base

Returns a new instance of Base.

Yields:

  • (_self)

Yield Parameters:

  • _self (Sinatra::Base)

    the object that the method was called on



975
976
977
978
979
980
981
# File 'lib/sinatra/base.rb', line 975

def initialize(app = nil, **_kwargs)
  super()
  @app = app
  @template_cache = TemplateCache.new
  @pinned_response = nil # whether a before! filter pinned the content-type
  yield self if block_given?
end

Class Attribute Details

.errorsObject (readonly)

Returns the value of attribute errors.



1280
1281
1282
# File 'lib/sinatra/base.rb', line 1280

def errors
  @errors
end

.filtersObject (readonly)

Returns the value of attribute filters.



1280
1281
1282
# File 'lib/sinatra/base.rb', line 1280

def filters
  @filters
end

.on_start_callbackObject (readonly)

Returns the value of attribute on_start_callback.



1280
1281
1282
# File 'lib/sinatra/base.rb', line 1280

def on_start_callback
  @on_start_callback
end

.on_stop_callbackObject (readonly)

Returns the value of attribute on_stop_callback.



1280
1281
1282
# File 'lib/sinatra/base.rb', line 1280

def on_stop_callback
  @on_stop_callback
end

.routesObject (readonly)

Returns the value of attribute routes.



1280
1281
1282
# File 'lib/sinatra/base.rb', line 1280

def routes
  @routes
end

.templatesObject (readonly)

Returns the value of attribute templates.



1280
1281
1282
# File 'lib/sinatra/base.rb', line 1280

def templates
  @templates
end

Instance Attribute Details

#appObject

Returns the value of attribute app.



972
973
974
# File 'lib/sinatra/base.rb', line 972

def app
  @app
end

#envObject

Returns the value of attribute env.



972
973
974
# File 'lib/sinatra/base.rb', line 972

def env
  @env
end

#paramsObject

Returns the value of attribute params.



972
973
974
# File 'lib/sinatra/base.rb', line 972

def params
  @params
end

#requestObject

Returns the value of attribute request.



972
973
974
# File 'lib/sinatra/base.rb', line 972

def request
  @request
end

#responseObject

Returns the value of attribute response.



972
973
974
# File 'lib/sinatra/base.rb', line 972

def response
  @response
end

#template_cacheObject (readonly)

Returns the value of attribute template_cache.



973
974
975
# File 'lib/sinatra/base.rb', line 973

def template_cache
  @template_cache
end

Class Method Details

.add_filter(type, path = /.*/, **options, &block) ⇒ Object

add a filter



1469
1470
1471
# File 'lib/sinatra/base.rb', line 1469

def add_filter(type, path = /.*/, **options, &block)
  filters[type] << compile!(type, path, block, **options)
end

.after(path = /.*/, **options, &block) ⇒ Object

Define an after filter; runs after all requests within the same context as route handlers and may access/modify the request and response.



1464
1465
1466
# File 'lib/sinatra/base.rb', line 1464

def after(path = /.*/, **options, &block)
  add_filter(:after, path, **options, &block)
end

.before(path = /.*/, **options, &block) ⇒ Object

Define a before filter; runs before all requests within the same context as route handlers and may access/modify the request and response.



1457
1458
1459
# File 'lib/sinatra/base.rb', line 1457

def before(path = /.*/, **options, &block)
  add_filter(:before, path, **options, &block)
end

.build(app) ⇒ Object

Creates a Rack::Builder instance with all the middleware set up and the given +app+ as end point.



1624
1625
1626
1627
1628
1629
1630
# File 'lib/sinatra/base.rb', line 1624

def build(app)
  builder = Rack::Builder.new
  setup_default_middleware builder
  setup_middleware builder
  builder.run app
  builder
end

.call(env) ⇒ Object



1632
1633
1634
# File 'lib/sinatra/base.rb', line 1632

def call(env)
  synchronize { prototype.call(env) }
end

.caller_filesObject

Like Kernel#caller but excluding certain magic entries and without line / method information; the resulting array contains filenames only.



1638
1639
1640
# File 'lib/sinatra/base.rb', line 1638

def caller_files
  cleaned_caller(1).flatten
end

.callers_to_ignoreObject



1282
1283
1284
# File 'lib/sinatra/base.rb', line 1282

def callers_to_ignore
  CALLERS_TO_IGNORE
end

.condition(name = "#{caller.first[/`.*'/]} condition", &block) ⇒ Object

Add a route condition. The route is considered non-matching when the block returns false.



1483
1484
1485
# File 'lib/sinatra/base.rb', line 1483

def condition(name = "#{caller.first[/`.*'/]} condition", &block)
  @conditions << generate_method(name, &block)
end

.configure(*envs) {|_self| ... } ⇒ Object

Set configuration options for Sinatra and/or the app. Allows scoping of settings for certain environments.

Yields:

  • (_self)

Yield Parameters:

  • _self (Sinatra::Base)

    the object that the method was called on



1550
1551
1552
# File 'lib/sinatra/base.rb', line 1550

def configure(*envs)
  yield self if envs.empty? || envs.include?(environment.to_sym)
end

.delete(path, opts = {}, &block) ⇒ Object



1514
# File 'lib/sinatra/base.rb', line 1514

def delete(path, opts = {}, &block)  route 'DELETE',  path, opts, &block end

.development?Boolean

Returns:

  • (Boolean)


1544
# File 'lib/sinatra/base.rb', line 1544

def development?; environment == :development end

.disable(*opts) ⇒ Object

Same as calling set :option, false for each of the given options.



1370
1371
1372
# File 'lib/sinatra/base.rb', line 1370

def disable(*opts)
  opts.each { |key| set(key, false) }
end

.enable(*opts) ⇒ Object

Same as calling set :option, true for each of the given options.



1365
1366
1367
# File 'lib/sinatra/base.rb', line 1365

def enable(*opts)
  opts.each { |key| set(key, true) }
end

.error(*codes, &block) ⇒ Object

Define a custom error handler. Optionally takes either an Exception class, or an HTTP status code to specify which errors should be handled.



1377
1378
1379
1380
1381
1382
1383
# File 'lib/sinatra/base.rb', line 1377

def error(*codes, &block)
  args  = compile! 'ERROR', /.*/, block
  codes = codes.flat_map(&method(:Array))
  codes << Exception if codes.empty?
  codes << Sinatra::NotFound if codes.include?(404)
  codes.each { |c| (@errors[c] ||= []) << args }
end

.extensionsObject

Extension modules registered on this class and all superclasses.



1305
1306
1307
1308
1309
1310
1311
# File 'lib/sinatra/base.rb', line 1305

def extensions
  if superclass.respond_to?(:extensions)
    (@extensions + superclass.extensions).uniq
  else
    @extensions
  end
end

.get(path, opts = {}, &block) ⇒ Object

Defining a GET handler also automatically defines a HEAD handler.



1502
1503
1504
1505
1506
1507
1508
# File 'lib/sinatra/base.rb', line 1502

def get(path, opts = {}, &block)
  conditions = @conditions.dup
  route('GET', path, opts, &block)

  @conditions = conditions
  route('HEAD', path, opts, &block)
end

.head(path, opts = {}, &block) ⇒ Object



1516
# File 'lib/sinatra/base.rb', line 1516

def head(path, opts = {}, &block)    route 'HEAD',    path, opts, &block end

.helpers(*extensions, &block) ⇒ Object

Makes the methods defined in the block and in the Modules given in extensions available to the handlers and templates



1528
1529
1530
1531
# File 'lib/sinatra/base.rb', line 1528

def helpers(*extensions, &block)
  class_eval(&block)   if block_given?
  include(*extensions) if extensions.any?
end

.inline_templates=(file = nil) ⇒ Object

Load embedded templates from the file; uses the caller's FILE when no file is specified.



1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
# File 'lib/sinatra/base.rb', line 1403

def inline_templates=(file = nil)
  file = (caller_files.first || File.expand_path($0)) if file.nil? || file == true

  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

  return unless data

  encoding = if app && app =~ /([^\n]*\n)?#[^\n]*coding: *(\S+)/m
               $2
             else
               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(String.new, encoding)
      templates[$1.to_sym] = [template, file, lines]
    elsif template
      template << line
    end
  end
end

.layout(name = :layout, &block) ⇒ Object

Define the layout template. The block must return the template source.



1397
1398
1399
# File 'lib/sinatra/base.rb', line 1397

def layout(name = :layout, &block)
  template name, &block
end


1522
# File 'lib/sinatra/base.rb', line 1522

def link(path, opts = {}, &block)    route 'LINK',    path, opts, &block end

.middlewareObject

Middleware used in this class and all superclasses.



1314
1315
1316
1317
1318
1319
1320
# File 'lib/sinatra/base.rb', line 1314

def middleware
  if superclass.respond_to?(:middleware)
    superclass.middleware + @middleware
  else
    @middleware
  end
end

.mime_type(type, value = nil) ⇒ Object

Lookup or register a mime type in Rack's mime registry.



1436
1437
1438
1439
1440
1441
1442
1443
1444
# File 'lib/sinatra/base.rb', line 1436

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

.mime_types(type) ⇒ Object

provides all mime types matching type, including deprecated types: mime_types :html # => ['text/html'] mime_types :js # => ['application/javascript', 'text/javascript']



1449
1450
1451
1452
# File 'lib/sinatra/base.rb', line 1449

def mime_types(type)
  type = mime_type type
  type =~ %r{^application/(xml|javascript)$} ? [type, "text/#{$1}"] : [type]
end

.new(*args, &block) ⇒ Object

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.



1616
1617
1618
1619
# File 'lib/sinatra/base.rb', line 1616

def new(*args, &block)
  instance = new!(*args, &block)
  Wrapper.new(build(instance).to_app, instance)
end

.not_found(&block) ⇒ Object

Sugar for error(404) { ... }



1386
1387
1388
# File 'lib/sinatra/base.rb', line 1386

def not_found(&block)
  error(404, &block)
end

.on_start(&on_start_callback) ⇒ Object



1473
1474
1475
# File 'lib/sinatra/base.rb', line 1473

def on_start(&on_start_callback)
  @on_start_callback = on_start_callback
end

.on_stop(&on_stop_callback) ⇒ Object



1477
1478
1479
# File 'lib/sinatra/base.rb', line 1477

def on_stop(&on_stop_callback)
  @on_stop_callback = on_stop_callback
end

.options(path, opts = {}, &block) ⇒ Object



1518
# File 'lib/sinatra/base.rb', line 1518

def options(path, opts = {}, &block) route 'OPTIONS', path, opts, &block end

.patch(path, opts = {}, &block) ⇒ Object



1520
# File 'lib/sinatra/base.rb', line 1520

def patch(path, opts = {}, &block)   route 'PATCH',   path, opts, &block end

.post(path, opts = {}, &block) ⇒ Object



1512
# File 'lib/sinatra/base.rb', line 1512

def post(path, opts = {}, &block)    route 'POST',    path, opts, &block end

.production?Boolean

Returns:

  • (Boolean)


1545
# File 'lib/sinatra/base.rb', line 1545

def production?;  environment == :production  end

.prototypeObject

The prototype instance used to process requests.



1606
1607
1608
# File 'lib/sinatra/base.rb', line 1606

def prototype
  @prototype ||= new
end

.public=(value) ⇒ Object



1487
1488
1489
1490
# File 'lib/sinatra/base.rb', line 1487

def public=(value)
  warn_for_deprecation ':public is no longer used to avoid overloading Module#public, use :public_folder or :public_dir instead'
  set(:public_folder, value)
end

.public_dirObject



1496
1497
1498
# File 'lib/sinatra/base.rb', line 1496

def public_dir
  public_folder
end

.public_dir=(value) ⇒ Object



1492
1493
1494
# File 'lib/sinatra/base.rb', line 1492

def public_dir=(value)
  self.public_folder = value
end

.put(path, opts = {}, &block) ⇒ Object



1510
# File 'lib/sinatra/base.rb', line 1510

def put(path, opts = {}, &block)     route 'PUT',     path, opts, &block end

.quit!Object Also known as: stop!

Stop the self-hosted server if running.



1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
# File 'lib/sinatra/base.rb', line 1562

def quit!
  return unless running?

  # Use Thin's hard #stop! if available, otherwise just #stop.
  running_server.respond_to?(:stop!) ? running_server.stop! : running_server.stop
  warn '== Sinatra has ended his set (crowd applauds)' unless suppress_messages?
  set :running_server, nil
  set :handler_name, nil

  on_stop_callback.call unless on_stop_callback.nil?
end

.register(*extensions, &block) ⇒ Object

Register an extension. Alternatively take a block from which an extension will be created and registered on the fly.



1535
1536
1537
1538
1539
1540
1541
1542
# File 'lib/sinatra/base.rb', line 1535

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

.reset!Object

Removes all routes, filters, middleware and extension hooks from the current class (not routes/filters/... defined by its superclass).



1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
# File 'lib/sinatra/base.rb', line 1288

def reset!
  @conditions     = []
  @routes         = {}
  @filters        = { before: [], after: [] }
  @errors         = {}
  @middleware     = []
  @prototype      = nil
  @extensions     = []

  @templates = if superclass.respond_to?(:templates)
                 Hash.new { |_hash, key| superclass.templates[key] }
               else
                 {}
               end
end

.run!(options = {}, &block) ⇒ Object Also known as: start!

Run the Sinatra app as a self-hosted server using Puma, Falcon, or WEBrick (in that order). If given a block, will call with the constructed handler once we have taken the stage.



1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
# File 'lib/sinatra/base.rb', line 1579

def run!(options = {}, &block)
  return if running?

  set options
  handler         = Rack::Handler.pick(server)
  handler_name    = handler.name.gsub(/.*::/, '')
  server_settings = settings.respond_to?(:server_settings) ? settings.server_settings : {}
  server_settings.merge!(Port: port, Host: bind)

  begin
    start_server(handler, server_settings, handler_name, &block)
  rescue Errno::EADDRINUSE
    warn "== Someone is already performing on port #{port}!"
    raise
  ensure
    quit!
  end
end

.running?Boolean

Check whether the self-hosted server is running or not.

Returns:

  • (Boolean)


1601
1602
1603
# File 'lib/sinatra/base.rb', line 1601

def running?
  running_server?
end

.set(option, value = (not_set = true), ignore_setter = false, &block) ⇒ Object

Sets an option to the given value. If the value is a proc, the proc will be called every time the option is accessed.

Raises:

  • (ArgumentError)


1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
# File 'lib/sinatra/base.rb', line 1324

def set(option, value = (not_set = true), ignore_setter = false, &block)
  raise ArgumentError if block && !not_set

  if block
    value = block
    not_set = false
  end

  if not_set
    raise ArgumentError unless option.respond_to?(:each)

    option.each { |k, v| set(k, v) }
    return self
  end

  if respond_to?("#{option}=") && !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, Integer, 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)
  define_singleton(option, getter)
  define_singleton("#{option}?", "!!#{option}") unless method_defined? "#{option}?"
  self
end

.settingsObject

Access settings defined with Base.set.



1011
1012
1013
# File 'lib/sinatra/base.rb', line 1011

def self.settings
  self
end

.template(name, &block) ⇒ Object

Define a named template. The block must return the template source.



1391
1392
1393
1394
# File 'lib/sinatra/base.rb', line 1391

def template(name, &block)
  filename, line = caller_locations.first
  templates[name] = [block, filename, line.to_i]
end

.test?Boolean

Returns:

  • (Boolean)


1546
# File 'lib/sinatra/base.rb', line 1546

def test?;        environment == :test        end


1524
# File 'lib/sinatra/base.rb', line 1524

def unlink(path, opts = {}, &block)  route 'UNLINK',  path, opts, &block end

.use(middleware, *args, &block) ⇒ Object

Use the specified Rack middleware



1555
1556
1557
1558
# File 'lib/sinatra/base.rb', line 1555

def use(middleware, *args, &block)
  @prototype = nil
  @middleware << [middleware, args, block]
end

Instance Method Details

#call(env) ⇒ Object

Rack call interface.



984
985
986
# File 'lib/sinatra/base.rb', line 984

def call(env)
  dup.call!(env)
end

#call!(env) ⇒ Object

:nodoc:



988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
# File 'lib/sinatra/base.rb', line 988

def call!(env) # :nodoc:
  @env      = env
  @params   = IndifferentHash.new
  @request  = Request.new(env)
  @response = Response.new
  @pinned_response = nil
  template_cache.clear if settings.reload_templates

  invoke { dispatch! }
  invoke { error_block!(response.status) } unless @env['sinatra.error']

  unless @response['Content-Type']
    if Array === body && body[0].respond_to?(:content_type)
      content_type body[0].content_type
    elsif (default = settings.default_content_type)
      content_type default
    end
  end

  @response.finish
end

#forwardObject

Forward the request to the downstream app -- middleware only.



1035
1036
1037
1038
1039
1040
1041
1042
1043
# File 'lib/sinatra/base.rb', line 1035

def forward
  raise '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

#halt(*response) ⇒ Object

Exit the current block, halts any further processing of the request, and returns the specified response.



1022
1023
1024
1025
# File 'lib/sinatra/base.rb', line 1022

def halt(*response)
  response = response.first if response.length == 1
  throw :halt, response
end

#new!Object

Create a new instance without middleware in front of it.



1611
# File 'lib/sinatra/base.rb', line 1611

alias new! new

#pass(&block) ⇒ Object

Pass control to the next matching route. If there are no more matching routes, Sinatra will return a 404 response.



1030
1031
1032
# File 'lib/sinatra/base.rb', line 1030

def pass(&block)
  throw :pass, block
end

#settingsObject

Access settings defined with Base.set.



1016
1017
1018
# File 'lib/sinatra/base.rb', line 1016

def settings
  self.class.settings
end