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module Mobility
=begin
Resets backend cache when reset events occur.
@example Add trigger to call a method +my_backend_reset_method+ on backend instance when reset event(s) occurs on model
resetter = Mobility::BackendResetter.for(MyModel).new(attributes) { my_backend_reset_method }
MyModel.include(resetter)
@see Mobility::ActiveRecord::BackendResetter
@see Mobility::ActiveModel::BackendResetter
@see Mobility::Sequel::BackendResetter
=end
class BackendResetter < Module
# @param [Array<String>] attribute_names Names of attributes whose backends should be reset
# @yield Backend to reset as context for block
# @raise [ArgumentError] if no block is provided.
def initialize(attribute_names, &block)
raise ArgumentError, "block required" unless block_given?
@model_reset_method = Proc.new do
attribute_names.each do |name|
if @mobility_backends && @mobility_backends[name]
@mobility_backends[name].instance_eval(&block)
end
end
end
end
# Returns backend resetter class for model class
# @param [Class] model_class Class of model to which backend resetter will be applied
def self.for(model_class)
if Loaded::ActiveRecord && model_class < ::ActiveRecord::Base
require "mobility/active_record/backend_resetter"
ActiveRecord::BackendResetter
elsif Loaded::ActiveRecord && model_class.ancestors.include?(::ActiveModel::Dirty)
require "mobility/active_model/backend_resetter"
ActiveModel::BackendResetter
elsif Loaded::Sequel && model_class < ::Sequel::Model
require "mobility/sequel/backend_resetter"
Sequel::BackendResetter
else
self
end
end
end
end
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15 entries across 15 versions & 1 rubygems