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Contents
module Cachetastic
module Helpers
# These helpers get added to ActiveRecord at both class and instance levels.
module ActiveRecord
# Returns the Cachetastic::Caches::Base object associated with the ActiveRecord model.
# If a cache hasn't been defined the one will be created on the fly.
# The cache for the ActiveRecord model is expected to be defined as:
# Cachetastic::Caches::ActiveRecord::MODEL_NAME_HERE
def cache_class
n = self.class.name
n = self.name if n == "Class"
# puts "n: #{n}"
c_name = "Cachetastic::Caches::ActiveRecord::#{n}Cache"
unless Cachetastic::Caches::ActiveRecord.const_defined?("#{n}Cache")
# puts "we need to create a cache for: #{c_name}"
eval %{
class #{c_name} < Cachetastic::Caches::Base
end
}
end
c_name.constantize
end
# How much did I want to call this method cache?? It originally was that, but
# in Rails 2.0 they decided to use that name, so I had to rename this method.
# This method will attempt to get an object from the cache for a given key.
# If the object is nil and a block is given the block will be run, and the results
# of the block will be automatically cached.
def cacher(key, expiry = 0)
cache_class.get(key) do
if block_given?
res = yield
cache_class.set(key, res, expiry)
end
end
end
# Expires all the objects associated with this ActiveRecord model's cache.
def expire_all
cache_class.expire_all
end
end
end
end
Version data entries
11 entries across 11 versions & 1 rubygems