Class: MemoRack::Locals

Inherits:
Hash
  • Object
show all
Defined in:
lib/memorack/locals.rb

Direct Known Subclasses

AppLocals, BaseLocals, PageInfo

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.define_key(name, &block) ⇒ Object

キーにメソッドを登録する



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# File 'lib/memorack/locals.rb', line 64

def self.define_key(name, &block)
	define_method(value_method(name), &block)
end

.value_method(name) ⇒ Object

値を取出すメソッド名



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# File 'lib/memorack/locals.rb', line 59

def self.value_method(name)
	:"value_#{name}"
end

Instance Method Details

#[](key) ⇒ Object

値を取出す



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# File 'lib/memorack/locals.rb', line 9

def [](key)
	return super if super_has_key?(key)
	return context[key].call(self, key) if context[key]
	return value(key) if value_method?(key)

	super
end

#context ⇒ Object

コールバック登録用のハッシュ



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# File 'lib/memorack/locals.rb', line 34

def context
	@context ||= {}
end

#context=(value) ⇒ Object

コールバック登録用のハッシュを代入する（merge用）



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# File 'lib/memorack/locals.rb', line 39

def context=(value)
	@context = value
end

#define_key(name, &block) ⇒ Object

キーにコールバックを登録する



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# File 'lib/memorack/locals.rb', line 44

def define_key(name, &block)
	context[name] = block
end

#has_key?(key) ⇒ Boolean

キーがあるか？

Returns:

  • (Boolean) 


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# File 'lib/memorack/locals.rb', line 18

def has_key?(key)
	return true if super
	return true if context.has_key?(key)
	return true if value_method?(key)

	false
end

#merge(hash) ⇒ Object

マージ



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# File 'lib/memorack/locals.rb', line 27

def merge(hash)
	new_hash = super
	new_hash.context = context.dup
	new_hash
end

#super_has_key? ⇒ Object 



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# File 'lib/memorack/locals.rb', line 6

alias :super_has_key? has_key?

#value(name) ⇒ Object

値をメソッドから取出す



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# File 'lib/memorack/locals.rb', line 54

def value(name)
	send(Locals.value_method(name), name)
end

#value_method?(name) ⇒ Boolean

値を取出すメソッドがあるか？

Returns:

  • (Boolean) 


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# File 'lib/memorack/locals.rb', line 49

def value_method?(name)
	respond_to?(Locals.value_method(name))
end