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Contents
module ReactiveAccessors
module ClassMethods
# Create a method to read a reactive value from an instance value. If it
# is not setup, create it so it can be updated through the reactive value
# at a later point.
def reactive_reader(*names)
names.each do |name|
var_name = :"@#{name}"
define_method(name.to_sym) do
value = instance_variable_get(var_name)
unless value
value = ReactiveValue.new(nil)
instance_variable_set(var_name, value)
end
value
end
end
end
def reactive_writer(*names)
names.each do |name|
var_name = :"@#{name}"
define_method(:"#{name}=") do |new_value|
value = instance_variable_get(var_name)
if value
value.cur = new_value
else
instance_variable_set(var_name, ReactiveValue.new(value))
end
end
end
end
def reactive_accessor(*names)
reactive_reader(*names)
reactive_writer(*names)
end
end
def self.included(base)
base.send :extend, ClassMethods
end
end
Version data entries
10 entries across 10 versions & 1 rubygems