Module: RorHack::ObjectHack

Included in:
Object
Defined in:
lib/ror_hack/object_hack.rb

Instance Method Summary collapse

Instance Method Details

#exist_and_eql?(other) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ror_hack/object_hack.rb', line 3

def exist_and_eql?(other)
  self && (self == other)
end

#instance_variable_fetch(name, value = nil) ⇒ Object

实例变量获取，如果不存在，则设为某个值



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# File 'lib/ror_hack/object_hack.rb', line 8

def instance_variable_fetch(name, value = nil)
  instance_variable_get("@#{ name }").tap do |i|
    return i unless i.is?(nil)
  end
  block_given? && my_value = yield
  value && my_value = value
  instance_variable_set("@#{ name }", my_value)
end

#is?(other) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ror_hack/object_hack.rb', line 17

def is?(other)
  self == other
end

#is_not?(other) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ror_hack/object_hack.rb', line 21

def is_not?(other)
  !is?(other)
end

#is_not_a?(arg) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ror_hack/object_hack.rb', line 42

def is_not_a?(arg)
  !self.is_a?(arg)
end

#not_in?(arg) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ror_hack/object_hack.rb', line 46

def not_in?(arg)
  !self.in?(arg)
end

#p2a ⇒ Object 



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# File 'lib/ror_hack/object_hack.rb', line 68

def p2a
  result = presence
  result = [] if result.nil?
  result
end

#p2h ⇒ Object 



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# File 'lib/ror_hack/object_hack.rb', line 62

def p2h
  result = presence
  result = {} if result.nil?
  result
end

#p2n ⇒ Object 



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# File 'lib/ror_hack/object_hack.rb', line 50

def p2n
  result = presence
  result = 0 if result.nil?
  result
end

#p2ros ⇒ Object 



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# File 'lib/ror_hack/object_hack.rb', line 74

def p2ros
  result = presence
  result = OpenStruct.new if result.nil?
end

#p2s ⇒ Object 



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# File 'lib/ror_hack/object_hack.rb', line 56

def p2s
  result = presence
  result = '' if result.nil?
  result
end

#passport_block(object, variable, value) ⇒ Object

可能想给has_one传递参数，用此可以设定对象的属性，来获取一些特殊关联。



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# File 'lib/ror_hack/object_hack.rb', line 26

def passport_block(object, variable, value)
  new = false
  unless object.instance_variable_defined?("@#{variable}")
    object.instance_variable_set("@#{variable}", nil)
    new = true
  end
  tmp_value = object.instance_variable_get("@#{variable}")
  begin
    object.instance_variable_set("@#{variable}", value)
    yield
  ensure
    object.instance_variable_set("@#{variable}", tmp_value)
    object.remove_instance_variable("@#{variable}") if new
  end
end