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module Flipper
class Configuration
def initialize(options = {})
@default = -> { Flipper.new(adapter) }
@adapter = -> { Flipper::Adapters::Memory.new }
end
# The default adapter to use.
#
# Pass a block to assign the adapter, and invoke without a block to
# return the configured adapter instance.
#
# Flipper.configure do |config|
# config.adapter # => instance of default Memory adapter
#
# # Configure it to use the ActiveRecord adapter
# config.adapter do
# require "flipper/adapters/active_record"
# Flipper::Adapters::ActiveRecord.new
# end
#
# config.adapter # => instance of ActiveRecord adapter
# end
#
def adapter(&block)
if block_given?
@adapter = block
else
@adapter.call
end
end
# Controls the default instance for flipper. When used with a block it
# assigns a new default block to use to generate an instance. When used
# without a block, it performs a block invocation and returns the result.
#
# configuration = Flipper::Configuration.new
# configuration.default # => Flipper::DSL instance using Memory adapter
#
# # sets the default block to generate a new instance using ActiveRecord adapter
# configuration.default do
# require "flipper/adapters/active_record"
# Flipper.new(Flipper::Adapters::ActiveRecord.new)
# end
#
# configuration.default # => Flipper::DSL instance using ActiveRecord adapter
#
# Returns result of default block invocation if called without block. If
# called with block, assigns the default block.
def default(&block)
if block_given?
@default = block
else
@default.call
end
end
end
end
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