Ordered Options
OrderedOptions
inherits from Hash
and provides dynamic accessor methods.
With a Hash
, key-value pairs are typically managed like this:
h = {}
h[:boy] = 'John'
h[:girl] = 'Mary'
h[:boy] # => 'John'
h[:girl] # => 'Mary'
h[:dog] # => nil
Using OrderedOptions
, the above code can be written as:
h = ActiveSupport::OrderedOptions.new
h.boy = 'John'
h.girl = 'Mary'
h.boy # => 'John'
h.girl # => 'Mary'
h.dog # => nil
To raise an exception when the value is blank, append a bang to the key name, like:
h.dog! # => raises KeyError: :dog is blank
Methods
Instance Public methods
[](key)
Also aliased as: _get
📝 Source code
# File activesupport/lib/active_support/ordered_options.rb, line 41
def [](key)
super(key.to_sym)
end
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[]=(key, value)
📝 Source code
# File activesupport/lib/active_support/ordered_options.rb, line 37
def []=(key, value)
super(key.to_sym, value)
end
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dig(key, *identifiers)
📝 Source code
# File activesupport/lib/active_support/ordered_options.rb, line 45
def dig(key, *identifiers)
super(key.to_sym, *identifiers)
end
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extractable_options?()
📝 Source code
# File activesupport/lib/active_support/ordered_options.rb, line 64
def extractable_options?
true
end
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inspect()
📝 Source code
# File activesupport/lib/active_support/ordered_options.rb, line 68
def inspect
"#<#{self.class.name} #{super}>"
end
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method_missing(method, *args)
📝 Source code
# File activesupport/lib/active_support/ordered_options.rb, line 49
def method_missing(method, *args)
if method.end_with?("=")
self[method.name.chomp("=")] = args.first
elsif method.end_with?("!")
name_string = method.name.chomp("!")
self[name_string].presence || raise(KeyError.new(":#{name_string} is blank"))
else
self[method.name]
end
end
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respond_to_missing?(name, include_private)
📝 Source code
# File activesupport/lib/active_support/ordered_options.rb, line 60
def respond_to_missing?(name, include_private)
true
end
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