Class: ActiveResource::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/active_resource/base.rb

Overview

ActiveResource::Base is the main class for mapping RESTful resources as models in a Rails application.

For an outline of what Active Resource is capable of, see files/vendor/rails/activeresource/README.html.

Automated mapping

Active Resource objects represent your RESTful resources as manipulatable Ruby objects. To map resources to Ruby objects, Active Resource only needs a class name that corresponds to the resource name (e.g., the class Person maps to the resources people, very similarly to Active Record) and a site value, which holds the URI of the resources.

class Person < ActiveResource::Base
  self.site = "http://api.people.com:3000/"
end

Now the Person class is mapped to RESTful resources located at http://api.people.com:3000/people/, and you can now use Active Resource’s lifecycles methods to manipulate resources.

Lifecycle methods

Active Resource exposes methods for creating, finding, updating, and deleting resources from REST web services.

ryan = Person.new(:first => 'Ryan', :last => 'Daigle')
ryan.save  #=> true
ryan.id  #=> 2
Person.exists?(ryan.id)  #=> true
ryan.exists?  #=> true

ryan = Person.find(1)
# => Resource holding our newly created Person object

ryan.first = 'Rizzle'
ryan.save  #=> true

ryan.destroy  #=> true

As you can see, these are very similar to Active Record’s lifecycle methods for database records. You can read more about each of these methods in their respective documentation.

Custom REST methods

Since simple CRUD/lifecycle methods can’t accomplish every task, Active Resource also supports defining your own custom REST methods. To invoke them, Active Resource provides the get, post, put and delete methods where you can specify a custom REST method name to invoke.

# POST to the custom 'register' REST method, i.e. POST /people/new/register.xml.
Person.new(:name => 'Ryan').post(:register)
# => { :id => 1, :name => 'Ryan', :position => 'Clerk' }

# PUT an update by invoking the 'promote' REST method, i.e. PUT /people/1/promote.xml?position=Manager.
Person.find(1).put(:promote, :position => 'Manager')
# => { :id => 1, :name => 'Ryan', :position => 'Manager' }

# GET all the positions available, i.e. GET /people/positions.xml.
Person.get(:positions)
# => [{:name => 'Manager'}, {:name => 'Clerk'}]

# DELETE to 'fire' a person, i.e. DELETE /people/1/fire.xml.
Person.find(1).delete(:fire)

For more information on using custom REST methods, see the ActiveResource::CustomMethods documentation.

Validations

You can validate resources client side by overriding validation methods in the base class.

class Person < ActiveResource::Base
   self.site = "http://api.people.com:3000/"
   protected
     def validate
       errors.add("last", "has invalid characters") unless last =~ /[a-zA-Z]*/
     end
end

See the ActiveResource::Validations documentation for more information.

Authentication

Many REST APIs will require authentication, usually in the form of basic HTTP authentication. Authentication can be specified by putting the credentials in the site variable of the Active Resource class you need to authenticate.

class Person < ActiveResource::Base
  self.site = "http://ryan:[email protected]:3000/"
end

For obvious security reasons, it is probably best if such services are available over HTTPS.

Errors & Validation

Error handling and validation is handled in much the same manner as you’re used to seeing in Active Record. Both the response code in the HTTP response and the body of the response are used to indicate that an error occurred.

Resource errors

When a GET is requested for a resource that does not exist, the HTTP 404 (Resource Not Found) response code will be returned from the server which will raise an ActiveResource::ResourceNotFound exception.

# GET http://api.people.com:3000/people/999.xml
ryan = Person.find(999) # => Raises ActiveResource::ResourceNotFound
# => Response = 404

404 is just one of the HTTP error response codes that ActiveResource will handle with its own exception. The following HTTP response codes will also result in these exceptions:

200 - 399

Valid response, no exception

404

ActiveResource::ResourceNotFound

409

ActiveResource::ResourceConflict

422

ActiveResource::ResourceInvalid (rescued by save as validation errors)

401 - 499

ActiveResource::ClientError

500 - 599

ActiveResource::ServerError

These custom exceptions allow you to deal with resource errors more naturally and with more precision rather than returning a general HTTP error. For example:

begin
  ryan = Person.find(my_id)
rescue ActiveResource::ResourceNotFound
  redirect_to :action => 'not_found'
rescue ActiveResource::ResourceConflict, ActiveResource::ResourceInvalid
  redirect_to :action => 'new'
end

Validation errors

Active Resource supports validations on resources and will return errors if any these validations fail (e.g., “First name can not be blank” and so on). These types of errors are denoted in the response by a response code of 422 and an XML representation of the validation errors. The save operation will then fail (with a false return value) and the validation errors can be accessed on the resource in question.

ryan = Person.find(1)
ryan.first #=> ''
ryan.save  #=> false

# When 
# PUT http://api.people.com:3000/people/1.xml
# is requested with invalid values, the response is:
#
# Response (422):
# <errors type="array"><error>First cannot be empty</error></errors>
#

ryan.errors.invalid?(:first)  #=> true
ryan.errors.full_messages  #=> ['First cannot be empty']

Learn more about Active Resource’s validation features in the ActiveResource::Validations documentation.

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(attributes = {}) ⇒ Base

Constructor method for new resources; the optional attributes parameter takes a Hash of attributes for the new resource.

Examples

my_course = Course.new
my_course.name = "Western Civilization"
my_course.lecturer = "Don Trotter"
my_course.save

my_other_course = Course.new(:name => "Philosophy: Reason and Being", :lecturer => "Ralph Cling")
my_other_course.save



532
533
534
535
536
 
# File 'lib/active_resource/base.rb', line 532

def initialize(attributes = {})
  @attributes     = {}
  @prefix_options = {}
  load(attributes)
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method_symbol, *arguments) ⇒ Object (private)

:nodoc:



882
883
884
885
886
887
888
889
890
891
892
893
 
# File 'lib/active_resource/base.rb', line 882

def method_missing(method_symbol, *arguments) #:nodoc:
  method_name = method_symbol.to_s

  case method_name.last
    when "="
      attributes[method_name.first(-1)] = arguments.first
    when "?"
      attributes[method_name.first(-1)]
    else
      attributes.has_key?(method_name) ? attributes[method_name] : super
  end
end

Instance Attribute Details

#attributes ⇒ Object

:nodoc:



518
519
520
 
# File 'lib/active_resource/base.rb', line 518

def attributes
  @attributes
end

#prefix_options ⇒ Object

:nodoc:



519
520
521
 
# File 'lib/active_resource/base.rb', line 519

def prefix_options
  @prefix_options
end

Class Method Details

.collection_path(prefix_options = {}, query_options = nil) ⇒ Object

Gets the collection path for the REST resources. If the query_options parameter is omitted, Rails will split from the prefix_options.

Options

prefix_options

A hash to add a prefix to the request for nested URL’s (e.g., :account_id => 19 would yield a URL like /accounts/19/purchases.xml).

query_options

A hash to add items to the query string for the request.

Examples

Post.collection_path
# => /posts.xml

Comment.collection_path(:post_id => 5) 
# => /posts/5/comments.xml

Comment.collection_path(:post_id => 5, :active => 1) 
# => /posts/5/comments.xml?active=1

Comment.collection_path({:post_id => 5}, {:active => 1}) 
# => /posts/5/comments.xml?active=1



312
313
314
315
 
# File 'lib/active_resource/base.rb', line 312

def collection_path(prefix_options = {}, query_options = nil)
  prefix_options, query_options = split_options(prefix_options) if query_options.nil?
  "#{prefix(prefix_options)}#{collection_name}.#{format.extension}#{query_string(query_options)}"
end

.connection(refresh = false) ⇒ Object

An instance of ActiveResource::Connection that is the base connection to the remote service. The refresh parameter toggles whether or not the connection is refreshed at every request or not (defaults to false).



206
207
208
209
210
211
212
213
 
# File 'lib/active_resource/base.rb', line 206

def connection(refresh = false)
  if defined?(@connection) || superclass == Object
    @connection = Connection.new(site, format) if refresh || @connection.nil?
    @connection
  else
    superclass.connection
  end
end

.create(attributes = {}) ⇒ Object

Create a new resource instance and request to the remote service that it be saved, making it equivalent to the following simultaneous calls:

ryan = Person.new(:first => 'ryan')
ryan.save

The newly created resource is returned. If a failure has occurred an exception will be raised (see save). If the resource is invalid and has not been saved then valid? will return false, while new? will still return true.

Examples

Person.create(:name => 'Jeremy', :email => '[email protected]', :enabled => true)
my_person = Person.find(:first)
my_person.email
# => [email protected]

dhh = Person.create(:name => 'David', :email => '[email protected]', :enabled => true)
dhh.valid?
# => true
dhh.new?
# => false

# We'll assume that there's a validation that requires the name attribute
that_guy = Person.create(:name => '', :email => '[email protected]', :enabled => true)
that_guy.valid?
# => false
that_guy.new?
# => true



349
350
351
 
# File 'lib/active_resource/base.rb', line 349

def create(attributes = {})
  returning(self.new(attributes)) { |res| res.save }        
end

.delete(id, options = {}) ⇒ Object

Deletes the resources with the ID in the id parameter.

Options

All options specify prefix and query parameters.

Examples

Event.delete(2)
# => DELETE /events/2

Event.create(:name => 'Free Concert', :location => 'Community Center')
my_event = Event.find(:first)
# => Events (id: 7)
Event.delete(my_event.id)
# => DELETE /events/7

# Let's assume a request to events/5/cancel.xml
Event.delete(params[:id])
# => DELETE /events/5



425
426
427
 
# File 'lib/active_resource/base.rb', line 425

def delete(id, options = {})
  connection.delete(element_path(id, options))
end

.element_path(id, prefix_options = {}, query_options = nil) ⇒ Object

Gets the element path for the given ID in id. If the query_options parameter is omitted, Rails will split from the prefix options.

Options

prefix_options

A hash to add a prefix to the request for nested URL’s (e.g., :account_id => 19 would yield a URL like /accounts/19/purchases.xml).

query_options

A hash to add items to the query string for the request.

Examples

Post.element_path(1) 
# => /posts/1.xml

Comment.element_path(1, :post_id => 5) 
# => /posts/5/comments/1.xml

Comment.element_path(1, :post_id => 5, :active => 1) 
# => /posts/5/comments/1.xml?active=1

Comment.element_path(1, {:post_id => 5}, {:active => 1}) 
# => /posts/5/comments/1.xml?active=1



286
287
288
289
 
# File 'lib/active_resource/base.rb', line 286

def element_path(id, prefix_options = {}, query_options = nil)
  prefix_options, query_options = split_options(prefix_options) if query_options.nil?
  "#{prefix(prefix_options)}#{collection_name}/#{id}.#{format.extension}#{query_string(query_options)}"
end

.exists?(id, options = {}) ⇒ Boolean

Asserts the existence of a resource, returning true if the resource is found.

Examples

Note.create(:title => 'Hello, world.', :body => 'Nothing more for now...')
Note.exists?(1)
# => true

Note.exists(1349)
# => false

Returns:

  • (Boolean) 


438
439
440
441
442
 
# File 'lib/active_resource/base.rb', line 438

def exists?(id, options = {})
  id && !find_single(id, options).nil?
rescue ActiveResource::ResourceNotFound
  false
end

.find(*arguments) ⇒ Object

Core method for finding resources. Used similarly to Active Record’s find method.

Arguments

The first argument is considered to be the scope of the query. That is, how many resources are returned from the request. It can be one of the following.

:one

Returns a single resource.

:first

Returns the first resource found.

:all

Returns every resource that matches the request.

Options

from

Sets the path or custom method that resources will be fetched from.

params

Sets query and prefix (nested URL) parameters.

Examples

Person.find(1)                                         
# => GET /people/1.xml

Person.find(:all)                                      
# => GET /people.xml

Person.find(:all, :params => { :title => "CEO" })      
# => GET /people.xml?title=CEO

Person.find(:first, :from => :managers)                  
# => GET /people/managers.xml

Person.find(:all, :from => "/companies/1/people.xml")  
# => GET /companies/1/people.xml

Person.find(:one, :from => :leader)                    
# => GET /people/leader.xml

Person.find(:all, :from => :developers, :params => { :language => 'ruby' })
# => GET /people/developers.xml?language=ruby

Person.find(:one, :from => "/companies/1/manager.xml") 
# => GET /companies/1/manager.xml

StreetAddress.find(1, :params => { :person_id => 1 })  
# => GET /people/1/street_addresses/1.xml



394
395
396
397
398
399
400
401
402
403
404
 
# File 'lib/active_resource/base.rb', line 394

def find(*arguments)
  scope   = arguments.slice!(0)
  options = arguments.slice!(0) || {}

  case scope
    when :all   then find_every(options)
    when :first then find_every(options).first
    when :one   then find_one(options)
    else             find_single(scope, options)
  end
end

.format ⇒ Object

Returns the current format, default is ActiveResource::Formats::XmlFormat



199
200
201
 
# File 'lib/active_resource/base.rb', line 199

def format # :nodoc:
  read_inheritable_attribute("format") || ActiveResource::Formats[:xml]
end

.format=(mime_type_reference_or_format) ⇒ Object

Sets the format that attributes are sent and received in from a mime type reference. Example:

Person.format = :json
Person.find(1) # => GET /people/1.json

Person.format = ActiveResource::Formats::XmlFormat
Person.find(1) # => GET /people/1.xml

Default format is :xml.



190
191
192
193
194
195
196
 
# File 'lib/active_resource/base.rb', line 190

def format=(mime_type_reference_or_format)
  format = mime_type_reference_or_format.is_a?(Symbol) ? 
    ActiveResource::Formats[mime_type_reference_or_format] : mime_type_reference_or_format

  write_inheritable_attribute("format", format)
  connection.format = format if site
end

.headers ⇒ Object 



215
216
217
 
# File 'lib/active_resource/base.rb', line 215

def headers
  @headers ||= {}
end

.prefix(options = {}) ⇒ Object

Gets the prefix for a resource’s nested URL (e.g., prefix/collectionname/1.xml) This method is regenerated at runtime based on what the prefix is set to.



228
229
230
231
232
233
234
 
# File 'lib/active_resource/base.rb', line 228

def prefix(options={})
  default = site.path
  default << '/' unless default[-1..-1] == '/'
  # generate the actual method based on the current site path
  self.prefix = default
  prefix(options)
end

.prefix=(value = '/') ⇒ Object Also known as: set_prefix

Sets the prefix for a resource’s nested URL (e.g., prefix/collectionname/1.xml). Default value is site.path.



245
246
247
248
249
250
251
252
253
254
255
256
257
258
 
# File 'lib/active_resource/base.rb', line 245

def prefix=(value = '/')
  # Replace :placeholders with '#{embedded options[:lookups]}'
  prefix_call = value.gsub(/:\w+/) { |key| "\#{options[#{key}]}" }

  # Redefine the new methods.
  code = <<-end_code
    def prefix_source() "#{value}" end
    def prefix(options={}) "#{prefix_call}" end
  end_code
  silence_warnings { instance_eval code, __FILE__, __LINE__ }
rescue
  logger.error "Couldn't set prefix: #{$!}\n  #{code}"
  raise
end

.prefix_source ⇒ Object

An attribute reader for the source string for the resource path prefix. This method is regenerated at runtime based on what the prefix is set to.



238
239
240
241
 
# File 'lib/active_resource/base.rb', line 238

def prefix_source
  prefix # generate #prefix and #prefix_source methods first
  prefix_source
end

.site ⇒ Object

Gets the URI of the REST resources to map for this class. The site variable is required ActiveResource’s mapping to work.



166
167
168
169
170
171
172
 
# File 'lib/active_resource/base.rb', line 166

def site
  if defined?(@site)
    @site
  elsif superclass != Object && superclass.site
    superclass.site.dup.freeze
  end
end

.site=(site) ⇒ Object

Sets the URI of the REST resources to map for this class to the value in the site argument. The site variable is required ActiveResource’s mapping to work.



176
177
178
179
 
# File 'lib/active_resource/base.rb', line 176

def site=(site)
  @connection = nil
  @site = site.nil? ? nil : create_site_uri_from(site)
end

Instance Method Details

#==(other) ⇒ Object

Test for equality. Resource are equal if and only if other is the same object or is an instance of the same class, is not new?, and has the same id.

Examples

ryan = Person.create(:name => 'Ryan')
jamie = Person.create(:name => 'Jamie')

ryan == jamie
# => false (Different name attribute and id)

ryan_again = Person.new(:name => 'Ryan')
ryan == ryan_again
# => false (ryan_again is new?)

ryans_clone = Person.create(:name => 'Ryan')
ryan == ryans_clone
# => false (Different id attributes)

ryans_twin = Person.find(ryan.id)
ryan == ryans_twin
# => true



594
595
596
 
# File 'lib/active_resource/base.rb', line 594

def ==(other)
  other.equal?(self) || (other.instance_of?(self.class) && !other.new? && other.id == id)
end

#destroy ⇒ Object

Deletes the resource from the remote service.

Examples

my_id = 3
my_person = Person.find(my_id)
my_person.destroy
Person.find(my_id)
# => 404 (Resource Not Found)

new_person = Person.create(:name => 'James')
new_id = new_person.id 
# => 7
new_person.destroy
Person.find(new_id)
# => 404 (Resource Not Found)



668
669
670
 
# File 'lib/active_resource/base.rb', line 668

def destroy
  connection.delete(element_path, self.class.headers)
end

#dup ⇒ Object

Duplicate the current resource without saving it.

Examples

my_invoice = Invoice.create(:customer => 'That Company')
next_invoice = my_invoice.dup
next_invoice.new?
# => true

next_invoice.save
next_invoice == my_invoice
# => false (different id attributes)

my_invoice.customer
# => That Company
next_invoice.customer
# => That Company



625
626
627
628
629
630
 
# File 'lib/active_resource/base.rb', line 625

def dup
  returning self.class.new do |resource|
    resource.attributes     = @attributes
    resource.prefix_options = @prefix_options
  end
end

#eql?(other) ⇒ Boolean

Tests for equality (delegates to ==).

Returns:

  • (Boolean) 


599
600
601
 
# File 'lib/active_resource/base.rb', line 599

def eql?(other)
  self == other
end

#exists? ⇒ Boolean

Evaluates to true if this resource is not new? and is found on the remote service. Using this method, you can check for resources that may have been deleted between the object’s instantiation and actions on it.

Examples

Person.create(:name => 'Theodore Roosevelt')
that_guy = Person.find(:first)
that_guy.exists?
# => true

that_lady = Person.new(:name => 'Paul Bean')
that_lady.exists?
# => false

guys_id = that_guy.id
Person.delete(guys_id)
that_guy.exists?
# => false

Returns:

  • (Boolean) 


691
692
693
 
# File 'lib/active_resource/base.rb', line 691

def exists?
  !new? && self.class.exists?(id, :params => prefix_options)
end

#hash ⇒ Object

Delegates to id in order to allow two resources of the same type and id to work with something like:

[Person.find(1), Person.find(2)] & [Person.find(1), Person.find(4)] # => [Person.find(1)]



605
606
607
 
# File 'lib/active_resource/base.rb', line 605

def hash
  id.hash
end

#id ⇒ Object

Get the id attribute of the resource.



558
559
560
 
# File 'lib/active_resource/base.rb', line 558

def id
  attributes[self.class.primary_key]
end

#id=(id) ⇒ Object

Set the id attribute of the resource.



563
564
565
 
# File 'lib/active_resource/base.rb', line 563

def id=(id)
  attributes[self.class.primary_key] = id
end

#load(attributes) ⇒ Object

A method to manually load attributes from a hash. Recursively loads collections of resources. This method is called in initialize and create when a Hash of attributes is provided.

Examples

my_attrs = {:name => 'J&J Textiles', :industry => 'Cloth and textiles'}

the_supplier = Supplier.find(:first)
the_supplier.name
# => 'J&M Textiles'
the_supplier.load(my_attrs)
the_supplier.name('J&J Textiles')

# These two calls are the same as Supplier.new(my_attrs)
my_supplier = Supplier.new
my_supplier.load(my_attrs)

# These three calls are the same as Supplier.create(my_attrs)
your_supplier = Supplier.new
your_supplier.load(my_attrs)
your_supplier.save

Raises:

  • (ArgumentError) 


763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
 
# File 'lib/active_resource/base.rb', line 763

def load(attributes)
  raise ArgumentError, "expected an attributes Hash, got #{attributes.inspect}" unless attributes.is_a?(Hash)
  @prefix_options, attributes = split_options(attributes)
  attributes.each do |key, value|
    @attributes[key.to_s] =
      case value
        when Array
          resource = find_or_create_resource_for_collection(key)
          value.map { |attrs| resource.new(attrs) }
        when Hash
          resource = find_or_create_resource_for(key)
          resource.new(value)
        else
          value.dup rescue value
      end
  end
  self
end

#new? ⇒ Boolean

A method to determine if the resource a new object (i.e., it has not been POSTed to the remote service yet).

Examples

not_new = Computer.create(:brand => 'Apple', :make => 'MacBook', :vendor => 'MacMall')
not_new.new?
# => false

is_new = Computer.new(:brand => 'IBM', :make => 'Thinkpad', :vendor => 'IBM')
is_new.new?
# => true

is_new.save
is_new.new?
# => false

Returns:

  • (Boolean) 


553
554
555
 
# File 'lib/active_resource/base.rb', line 553

def new?
  id.nil?
end

#reload ⇒ Object

A method to reload the attributes of this object from the remote web service.

Examples

my_branch = Branch.find(:first)
my_branch.name
# => Wislon Raod

# Another client fixes the typo...

my_branch.name
# => Wislon Raod
my_branch.reload
my_branch.name
# => Wilson Road



738
739
740
 
# File 'lib/active_resource/base.rb', line 738

def reload
  self.load(self.class.find(id, :params => @prefix_options).attributes)
end

#respond_to?(method, include_priv = false) ⇒ Boolean

A method to determine if an object responds to a message (e.g., a method call). In Active Resource, a Person object with a name attribute can answer true to my_person.respond_to?("name"), my_person.respond_to?("name="), and my_person.respond_to?("name?").

Returns:

  • (Boolean) 


788
789
790
791
792
793
794
795
796
797
798
799
800
 
# File 'lib/active_resource/base.rb', line 788

def respond_to?(method, include_priv = false)
  method_name = method.to_s
  if attributes.nil?
    return super
  elsif attributes.has_key?(method_name)
    return true 
  elsif ['?','='].include?(method_name.last) && attributes.has_key?(method_name.first(-1))
    return true
  end
  # super must be called at the end of the method, because the inherited respond_to?
  # would return true for generated readers, even if the attribute wasn't present
  super
end

#respond_to_without_attributes? ⇒ Object

For checking respond_to? without searching the attributes (which is faster).



783
 
# File 'lib/active_resource/base.rb', line 783

alias_method :respond_to_without_attributes?, :respond_to?

#save ⇒ Object

A method to save (POST) or update (PUT) a resource. It delegates to create if a new object, update if it is existing. If the response to the save includes a body, it will be assumed that this body is XML for the final object as it looked after the save (which would include attributes like created_at that weren’t part of the original submit).

Examples

my_company = Company.new(:name => 'RoleModel Software', :owner => 'Ken Auer', :size => 2)
my_company.new?
# => true
my_company.save
# => POST /companies/ (create)

my_company.new?
# => false
my_company.size = 10
my_company.save
# => PUT /companies/1 (update)



649
650
651
 
# File 'lib/active_resource/base.rb', line 649

def save
  new? ? create : update
end

#to_param ⇒ Object

Allows ActiveResource objects to be used as parameters in ActionPack URL generation.



568
569
570
 
# File 'lib/active_resource/base.rb', line 568

def to_param
  id && id.to_s
end

#to_xml(options = {}) ⇒ Object

A method to convert the the resource to an XML string.

Options

The options parameter is handed off to the to_xml method on each attribute, so it has the same options as the to_xml methods in ActiveSupport.

indent

Set the indent level for the XML output (default is 2).

dasherize

Boolean option to determine whether or not element names should replace underscores with dashes (default is false).

skip_instruct

Toggle skipping the instruct! call on the XML builder that generates the XML declaration (default is false).

Examples

my_group = SubsidiaryGroup.find(:first)
my_group.to_xml
# => <?xml version="1.0" encoding="UTF-8"?>
#    <subsidiary_group> [...] </subsidiary_group>

my_group.to_xml(:dasherize => true)
# => <?xml version="1.0" encoding="UTF-8"?>
#    <subsidiary-group> [...] </subsidiary-group>

my_group.to_xml(:skip_instruct => true)
# => <subsidiary_group> [...] </subsidiary_group>



720
721
722
 
# File 'lib/active_resource/base.rb', line 720

def to_xml(options={})
  attributes.to_xml({:root => self.class.element_name}.merge(options))
end