On Sunday, September 23, 2012 8:11:43 AM UTC-4, Ilia Bylich wrote: > > I am not sure that this way is simple. I usually use for gem configuration > this code > > require 'active_support/configurable' > module GemModule > include ActiveSupport::Configurable > > class << self > def setup > yield config > end > end > end > > And then you can write > > GemModule.setup do |config| > config.option1 = "value1" > config.option2 = 2 > end > > And > > GemModule.config.option1 > # => "value1" > > Moreover, you can define method_missing in you module and delegate unknown > methods to self.config. Then you will be able to write > GemModule.option1 > # => "value1" > > http://api.rubyonrails.org/classes/ActiveSupport/Configurable.html > > That works, but it has the following disadvantages over the method I described:
1. If you use ActiveSupport::Configurable you are tied to using activesupport/Rails. Many times you want to write the Gem so that it isn't Rails-specific and want to limit dependencies. 2. I know Rails uses the "pass the config into the block thing", but it isn't as DRY as not typing "config." before each parameter. 3. By defining the attr_accessors, you limit the chance that a user will mistype/misspell a variable. 4. The way you described allows the user to define config parameters with procs and lambdas, but the way I describe allows the user to define "config parameters" as procs, lambdas, and methods, i.e. the user can actually just define a variable as: def some_variable_name # some really involved implementation here, even refactored into various methods, etc. in the block. end See more at: http://stufftohelpyouout.blogspot.com/2012/09/forget-struct-and-openstruct-flexible.html Hope that helps. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msg/rubyonrails-talk/-/zcMdqXgj6gYJ. For more options, visit https://groups.google.com/groups/opt_out.
