I have a method that I've started to use in multiple models for Webscraping, where is the best place to keep it? Should I put it in the application_controller, application _helper? I'm not sure where a good place is to put it for multiple models to use it?
def self.retryable(options = {}, &block)
opts = { :tries => 1, :on => Exception }.merge(options)
retry_exception, retries = opts[:on], opts[:tries]
begin
return yield
rescue retry_exception
retry if (retries -= 1) > 0
end
yield
end
You could create a module. An example from the Altered Beast project: (I often look in other projects how they solve specific problems)
# app/models/user/editable.rb
module User::Editable
def editable_by?(user, is_moderator = nil)
is_moderator = user.moderator_of?(forum) if is_moderator.nil?
user && (user.id == user_id || is_moderator)
end
end
And in the models:
# app/models/post.rb
class Post < ActiveRecord::Base
include User::Editable
# ...
end
# app/models/topic.rb
class Topic < ActiveRecord::Base
include User::Editable
# ...
end
Put retryable.rb in lib/
module Retryable
extend self
def retryable(options = {}, &block) # no self required
...
end
end
Use it:
Retryable.retryable { ... }
or including namespace:
include Retryable
retryable { ... }
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