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Class: ActiveSupport::InheritableOptions

Relationships & Source Files
Extension / Inclusion / Inheritance Descendants
Subclasses:
Configurable::Configuration
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, OrderedOptions, ::Hash
Instance Chain:
self, OrderedOptions, ::Hash, DeepMergeable
Inherits: ActiveSupport::OrderedOptions
Defined in: activesupport/lib/active_support/ordered_options.rb

Overview

Inheritable Options

InheritableOptions provides a constructor to build an OrderedOptions hash inherited from another hash.

Use this if you already have some hash and you want to create a new one based on it.

h = ActiveSupport::InheritableOptions.new({ girl: 'Mary', boy: 'John' })
h.girl # => 'Mary'
h.boy  # => 'John'

If the existing hash has string keys, call Hash#symbolize_keys on it.

h = ActiveSupport::InheritableOptions.new({ 'girl' => 'Mary', 'boy' => 'John' }.symbolize_keys)
h.girl # => 'Mary'
h.boy  # => 'John'

Class Method Summary

::Hash - Inherited

.from_trusted_xml

Builds a ::Hash from XML just like Hash.from_xml, but also allows ::Symbol and YAML.
.from_xml

Returns a ::Hash containing a collection of pairs when the key is the node name and the value is its content.

Instance Attribute Summary

OrderedOptions - Inherited

#extractable_options?

::Hash - Inherited

#extractable_options?

By default, only instances of ::Hash itself are extractable.

Instance Method Summary

OrderedOptions - Inherited

#[], #[]=, #dig, #inspect, #method_missing, #respond_to_missing?,
#_get

preserve the original #[] method.

::Hash - Inherited

#assert_valid_keys

Validates all keys in a hash match *valid_keys, raising ArgumentError on a mismatch.
#blank?

A hash is blank if it’s empty:
#compact_blank!

Removes all blank values from the ::Hash in place and returns self.
#deep_dup

Returns a deep copy of hash.
#deep_merge

Returns a new hash with self and other_hash merged recursively.
#deep_merge!

Same as #deep_merge, but modifies self.
#deep_stringify_keys

Returns a new hash with all keys converted to strings.
#deep_stringify_keys!

Destructively converts all keys to strings.
#deep_symbolize_keys

Returns a new hash with all keys converted to symbols, as long as they respond to to_sym.
#deep_symbolize_keys!

Destructively converts all keys to symbols, as long as they respond to to_sym.
#deep_transform_keys

Returns a new hash with all keys converted by the block operation.
#deep_transform_keys!

Destructively converts all keys by using the block operation.
#deep_transform_values

Returns a new hash with all values converted by the block operation.
#deep_transform_values!

Destructively converts all values by using the block operation.
#except

Returns a hash that includes everything except given keys.
#except!

Removes the given keys from hash and returns it.
#extract!

Removes and returns the key/value pairs matching the given keys.
#nested_under_indifferent_access

Alias for Hash#with_indifferent_access.
#reverse_merge

Merges the caller into other_hash.
#reverse_merge!

Destructive reverse_merge.
#reverse_update

Alias for Hash#reverse_merge!.
#slice!

Replaces the hash with only the given keys.
#stringify_keys

Returns a new hash with all keys converted to strings.
#stringify_keys!

Destructively converts all keys to strings.
#symbolize_keys

Returns a new hash with all keys converted to symbols, as long as they respond to to_sym.
#symbolize_keys!

Destructively converts all keys to symbols, as long as they respond to to_sym.
#to_options

Alias for Hash#symbolize_keys.
#to_options!

Alias for Hash#symbolize_keys!.
#to_param

Alias for Hash#to_query.
#to_query

Returns a string representation of the receiver suitable for use as a URL query string:
#to_xml

Returns a string containing an XML representation of its receiver:
#with_defaults

Alias for Hash#reverse_merge.
#with_defaults!

Alias for Hash#reverse_merge!.
#with_indifferent_access

Returns an HashWithIndifferentAccess out of its receiver:
#_deep_transform_keys_in_object

Support methods for deep transforming nested hashes and arrays.
#_deep_transform_keys_in_object!,
#_deep_transform_values_in_object

Support methods for deep transforming nested hashes and arrays.
#_deep_transform_values_in_object!, #as_json,
#compact_blank

Hash#reject has its own definition, so this needs one too.
#deep_merge?

DeepMergeable - Included

#deep_merge

Returns a new instance with the values from other merged recursively.
#deep_merge!

Same as #deep_merge, but modifies self.
#deep_merge?

Returns true if other can be deep merged into self.

Constructor Details

.new(parent = nil) ⇒ InheritableOptions

[ GitHub ] 

  


# File 'activesupport/lib/active_support/ordered_options.rb', line 94



def initialize(parent = nil)
  if parent.kind_of?(OrderedOptions)
    # use the faster _get when dealing with OrderedOptions
    super() { |h, k| parent._get(k) }
  elsif parent
    super() { |h, k| parent[k] }
  else
    super()
  end
end


  







Dynamic Method Handling

  

    This class handles dynamic methods through the method_missing method
      in the class ActiveSupport::OrderedOptions


Instance Method Details



  

    #inheritable_copy  
  

  [ GitHub ]


  

  


# File 'activesupport/lib/active_support/ordered_options.rb', line 105



def inheritable_copy
  self.class.new(self)
end