class ActionDispatch::Request

Parent:
Object
Included modules:
ActionDispatch::Http::Cache::Request, ActionDispatch::Http::MimeNegotiation, ActionDispatch::Http::Parameters, ActionDispatch::Http::FilterParameters, ActionDispatch::Http::URL, ActionDispatch::ContentSecurityPolicy::Request, ActionDispatch::PermissionsPolicy::Request

Constants

ENV_METHODS
HTTP_METHODS
HTTP_METHOD_LOOKUP
LOCALHOST
RFC2518

HTTP methods from RFC 2518: HTTP Extensions for Distributed Authoring – WEBDAV

RFC2616

HTTP methods from RFC 2616: Hypertext Transfer Protocol – HTTP/1.1

RFC3253

HTTP methods from RFC 3253: Versioning Extensions to WebDAV

RFC3648

HTTP methods from RFC 3648: WebDAV Ordered Collections Protocol

RFC3744

HTTP methods from RFC 3744: WebDAV Access Control Protocol

RFC4791

HTTP methods from RFC 4791: Calendaring Extensions to WebDAV

RFC5323

HTTP methods from RFC 5323: WebDAV SEARCH

RFC5789

HTTP methods from RFC 5789: PATCH Method for HTTP

Attributes

rack_request[R]

Public Class Methods

empty() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 60
def self.empty
  new({})
end
new(env) Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 64
def initialize(env)
  super

  @rack_request = Rack::Request.new(env)

  @method            = nil
  @request_method    = nil
  @remote_ip         = nil
  @original_fullpath = nil
  @fullpath          = nil
  @ip                = nil
end
Calls superclass method ActionDispatch::Http::URL::new

Public Instance Methods

GET() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 394
def GET
  fetch_header("action_dispatch.request.query_parameters") do |k|
    encoding_template = Request::Utils::CustomParamEncoder.action_encoding_template(self, path_parameters[:controller], path_parameters[:action])
    rack_query_params = ActionDispatch::ParamBuilder.from_query_string(rack_request.query_string, encoding_template: encoding_template)

    set_header k, rack_query_params
  end
rescue ActionDispatch::ParamError => e
  raise ActionController::BadRequest.new("Invalid query parameters: #{e.message}")
end

Override Rack’s GET method to support indifferent access.

Also aliased as: query_parameters
POST() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 407
def POST
  fetch_header("action_dispatch.request.request_parameters") do
    encoding_template = Request::Utils::CustomParamEncoder.action_encoding_template(self, path_parameters[:controller], path_parameters[:action])

    param_list = nil
    pr = parse_formatted_parameters(params_parsers) do
      if param_list = request_parameters_list
        ActionDispatch::ParamBuilder.from_pairs(param_list, encoding_template: encoding_template)
      else
        # We're not using a version of Rack that provides raw form
        # pairs; we must use its hash (and thus post-process it below).
        fallback_request_parameters
      end
    end

    # If the request body was parsed by a custom parser like JSON
    # (and thus the above block was not run), we need to
    # post-process the result hash.
    if param_list.nil?
      pr = ActionDispatch::ParamBuilder.from_hash(pr, encoding_template: encoding_template)
    end

    self.request_parameters = pr
  end
rescue ActionDispatch::ParamError, EOFError => e
  raise ActionController::BadRequest.new("Invalid request parameters: #{e.message}")
end

Override Rack’s POST method to support indifferent access.

Also aliased as: request_parameters
authorization() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 459
def authorization
  get_header("HTTP_AUTHORIZATION")   ||
  get_header("X-HTTP_AUTHORIZATION") ||
  get_header("X_HTTP_AUTHORIZATION") ||
  get_header("REDIRECT_X_HTTP_AUTHORIZATION")
end

Returns the authorization header regardless of whether it was specified directly or through one of the proxy alternatives.

body() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 356
def body
  if raw_post = get_header("RAW_POST_DATA")
    raw_post = (+raw_post).force_encoding(Encoding::BINARY)
    StringIO.new(raw_post)
  else
    body_stream
  end
end

The request body is an IO input stream. If the RAW_POST_DATA environment variable is already set, wrap it in a StringIO.

commit_csrf_token() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 491
def commit_csrf_token
  controller_instance.commit_csrf_token(self) if controller_instance.respond_to?(:commit_csrf_token)
end
commit_flash() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 480
def commit_flash
end
content_length() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 291
def content_length
  return raw_post.bytesize if has_header?(TRANSFER_ENCODING)
  super.to_i
end

Returns the content length of the request as an integer.

Calls superclass method
controller_class() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 88
def controller_class
  params = path_parameters
  params[:action] ||= "index"
  controller_class_for(params[:controller])
end
controller_class_for(name) Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 94
def controller_class_for(name)
  if name
    controller_param = name.underscore
    const_name = controller_param.camelize << "Controller"
    begin
      const_name.constantize
    rescue NameError => error
      if error.missing_name == const_name || const_name.start_with?("#{error.missing_name}::")
        raise MissingController.new(error.message, error.name)
      else
        raise
      end
    end
  else
    PASS_NOT_FOUND
  end
end
form_data?() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 372
def form_data?
  FORM_DATA_MEDIA_TYPES.include?(media_type)
end

Determine whether the request body contains form-data by checking the request Content-Type for one of the media-types: application/x-www-form-urlencoded or multipart/form-data. The list of form-data media types can be modified through the FORM_DATA_MEDIA_TYPES array.

A request body is not assumed to contain form-data when no Content-Type header is provided and the request_method is POST.

fullpath() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 270
def fullpath
  @fullpath ||= super
end

Returns the String full path including params of the last URL requested.

# get "/articles"
request.fullpath # => "/articles"

# get "/articles?page=2"
request.fullpath # => "/articles?page=2"
Calls superclass method
headers() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 232
def headers
  @headers ||= Http::Headers.new(self)
end

Provides access to the request’s HTTP headers, for example:

request.headers["Content-Type"] # => "text/plain"
http_auth_salt() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 198
def http_auth_salt
  get_header "action_dispatch.http_auth_salt"
end
# File actionpack/lib/action_dispatch/http/request.rb, line 305
def ip
  @ip ||= super
end

Returns the IP address of client as a String.

Calls superclass method
key?(key) Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 115
def key?(key)
  has_header? key
end

Returns true if the request has a header matching the given key parameter.

request.key? :ip_spoofing_check # => true
local?() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 467
def local?
  LOCALHOST.match?(remote_addr) && LOCALHOST.match?(remote_ip)
end

True if the request came from localhost, 127.0.0.1, or ::1.

logger() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 476
def logger
  get_header("action_dispatch.logger")
end
media_type() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 286
def media_type
  content_mime_type&.to_s
end

The String MIME type of the request.

# get "/articles"
request.media_type # => "application/x-www-form-urlencoded"
method(*args) Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 212
def method(*args)
  if args.empty?
    @method ||= check_method(
      get_header("rack.methodoverride.original_method") ||
      get_header("REQUEST_METHOD")
    )
  else
    super
  end
end

Returns the original value of the environment’s REQUEST_METHOD, even if it was overridden by middleware. See request_method for more information.

For debugging purposes, when called with arguments this method will fall back to Object#method

Calls superclass method
method_symbol() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 225
def method_symbol
  HTTP_METHOD_LOOKUP[method]
end

Returns a symbol form of the method.

original_fullpath() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 259
def original_fullpath
  @original_fullpath ||= (get_header("ORIGINAL_FULLPATH") || fullpath)
end

Returns a String with the last requested path including their params.

# get '/foo'
request.original_fullpath # => '/foo'

# get '/foo?bar'
request.original_fullpath # => '/foo?bar'
original_url() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 278
def original_url
  base_url + original_fullpath
end

Returns the original request URL as a String.

# get "/articles?page=2"
request.original_url # => "http://www.example.com/articles?page=2"
query_parameters()
Alias for: GET
raw_post() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 347
def raw_post
  unless has_header? "RAW_POST_DATA"
    set_header("RAW_POST_DATA", read_body_stream)
  end
  get_header "RAW_POST_DATA"
end

Read the request body. This is useful for web services that need to work with raw requests directly.

remote_ip() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 311
def remote_ip
  @remote_ip ||= (get_header("action_dispatch.remote_ip") || ip).to_s
end

Returns the IP address of client as a String, usually set by the RemoteIp middleware.

remote_ip=(remote_ip) Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 315
def remote_ip=(remote_ip)
  @remote_ip = nil
  set_header "action_dispatch.remote_ip", remote_ip
end
request_id() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 330
def request_id
  get_header ACTION_DISPATCH_REQUEST_ID
end

Returns the unique request id, which is based on either the X-Request-Id header that can be generated by a firewall, load balancer, or web server, or by the RequestId middleware (which sets the action_dispatch.request_id environment variable).

This unique ID is useful for tracing a request from end-to-end as part of logging or debugging. This relies on the Rack variable set by the ActionDispatch::RequestId middleware.

Also aliased as: uuid
request_method() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 152
def request_method
  @request_method ||= check_method(super)
end

Returns the HTTP method that the application should see. In the case where the method was overridden by a middleware (for instance, if a HEAD request was converted to a GET, or if a _method parameter was used to determine the method the application should use), this method returns the overridden value, not the original.

Calls superclass method
request_method_symbol() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 203
def request_method_symbol
  HTTP_METHOD_LOOKUP[request_method]
end

Returns a symbol form of the request_method.

request_parameters()
Alias for: POST
request_parameters=(params) Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 471
def request_parameters=(params)
  raise if params.nil?
  set_header("action_dispatch.request.request_parameters", params)
end
request_parameters_list() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 436
def request_parameters_list
  # We don't use Rack's parse result, but we must call it so Rack
  # can populate the rack.request.* keys we need.
  rack_post = rack_request.POST

  if form_pairs = get_header("rack.request.form_pairs")
    # Multipart
    form_pairs
  elsif form_vars = get_header("rack.request.form_vars")
    # URL-encoded
    ActionDispatch::QueryParser.each_pair(form_vars)
  elsif rack_post && !rack_post.empty?
    # It was multipart, but Rack did not preserve a pair list
    # (probably too old). Flat parameter list is not available.
    nil
  else
    # No request body, or not a format Rack knows
    []
  end
end
reset_csrf_token() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 487
def reset_csrf_token
  controller_instance.reset_csrf_token(self) if controller_instance.respond_to?(:reset_csrf_token)
end
reset_session() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 380
def reset_session
  session.destroy
  reset_csrf_token
end
route_uri_pattern() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 160
def route_uri_pattern
  get_header("action_dispatch.route_uri_pattern")
end

Returns the URI pattern of the matched route for the request, using the same format as bin/rails routes:

request.route_uri_pattern # => "/:controller(/:action(/:id))(.:format)"
send_early_hints(links) Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 248
def send_early_hints(links)
  env["rack.early_hints"]&.call(links)
end

Early Hints is an HTTP/2 status code that indicates hints to help a client start making preparations for processing the final response.

If the env contains rack.early_hints then the server accepts HTTP2 push for link headers.

The send_early_hints method accepts a hash of links as follows:

send_early_hints("link" => "</style.css>; rel=preload; as=style,</script.js>; rel=preload")

If you are using javascript_include_tag or stylesheet_link_tag the Early Hints headers are included by default if supported.

server_software() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 341
def server_software
  (get_header("SERVER_SOFTWARE") && /^([a-zA-Z]+)/ =~ get_header("SERVER_SOFTWARE")) ? $1.downcase : nil
end

Returns the lowercase name of the HTTP server software.

session_options=(options) Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 389
def session_options=(options)
  Session::Options.set self, options
end
uuid()
Alias for: request_id
xhr?()
Alias for: xml_http_request?
xml_http_request?() Show source 
# File actionpack/lib/action_dispatch/http/request.rb, line 299
def xml_http_request?
  /XMLHttpRequest/i.match?(get_header("HTTP_X_REQUESTED_WITH"))
end

Returns true if the X-Requested-With header contains “XMLHttpRequest” (case-insensitive), which may need to be manually added depending on the choice of JavaScript libraries and frameworks.

Also aliased as: xhr?

© 2004–2021 David Heinemeier Hansson
Licensed under the MIT License.