跳至内容 跳至搜索

可继承选项

InheritableOptions 提供了一个构造函数来构建一个从另一个哈希继承的 OrderedOptions 哈希。

如果您已经拥有一个哈希并且想要基于它创建一个新的哈希,请使用它。

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

如果现有哈希具有字符串键,请对其调用 Hash#symbolize_keys

h = ActiveSupport::InheritableOptions.new({ 'girl' => 'Mary', 'boy' => 'John' }.symbolize_keys)
h.girl # => 'Mary'
h.boy  # => 'John'
方法
#
E
I
K
N
O
P
T

类公共方法

new(parent = nil)

# File activesupport/lib/active_support/ordered_options.rb, line 90
def initialize(parent = nil)
  @parent = parent
  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()
    @parent = {}
  end
end

实例公共方法

==(other)

# File activesupport/lib/active_support/ordered_options.rb, line 107
def ==(other)
  to_h == other.to_h
end

each(&block)

# File activesupport/lib/active_support/ordered_options.rb, line 142
def each(&block)
  to_h.each(&block)
  self
end

inheritable_copy()

# File activesupport/lib/active_support/ordered_options.rb, line 134
def inheritable_copy
  self.class.new(self)
end

inspect()

# File activesupport/lib/active_support/ordered_options.rb, line 111
def inspect
  "#<#{self.class.name} #{to_h.inspect}>"
end

key?(key)

也称为: own_key?
# File activesupport/lib/active_support/ordered_options.rb, line 126
def key?(key)
  super || @parent.key?(key)
end

overridden?(key)

# File activesupport/lib/active_support/ordered_options.rb, line 130
def overridden?(key)
  !!(@parent && @parent.key?(key) && own_key?(key.to_sym))
end

own_key?(key)

别名: key?

pretty_print(pp)

# File activesupport/lib/active_support/ordered_options.rb, line 119
def pretty_print(pp)
  pp.pp_hash(to_h)
end

to_a()

# File activesupport/lib/active_support/ordered_options.rb, line 138
def to_a
  entries
end

to_h()

# File activesupport/lib/active_support/ordered_options.rb, line 103
def to_h
  @parent.merge(self)
end

to_s()

# File activesupport/lib/active_support/ordered_options.rb, line 115
def to_s
  to_h.to_s
end