See ActiveSupport::Cache::Store for documentation.
# File lib/active_support/cache.rb, line 57 def self.expand_cache_key(key, namespace = nil) expanded_cache_key = namespace ? "#{namespace}/" : "" if ENV["RAILS_CACHE_ID"] || ENV["RAILS_APP_VERSION"] expanded_cache_key << "#{ENV["RAILS_CACHE_ID"] || ENV["RAILS_APP_VERSION"]}/" end expanded_cache_key << case when key.respond_to?(:cache_key) key.cache_key when key.is_a?(Array) key.collect { |element| expand_cache_key(element) }.to_param when key key.to_param end.to_s expanded_cache_key end
Creates a new CacheStore object according to the given options.
If no arguments are passed to this method, then a new ActiveSupport::Cache::MemoryStore object will be returned.
If you pass a Symbol as the first argument, then a corresponding cache store class under the ActiveSupport::Cache namespace will be created. For example:
ActiveSupport::Cache.lookup_store(:memory_store) # => returns a new ActiveSupport::Cache::MemoryStore object ActiveSupport::Cache.lookup_store(:drb_store) # => returns a new ActiveSupport::Cache::DRbStore object
Any additional arguments will be passed to the corresponding cache store class's constructor:
ActiveSupport::Cache.lookup_store(:file_store, "/tmp/cache") # => same as: ActiveSupport::Cache::FileStore.new("/tmp/cache")
If the first argument is not a Symbol, then it will simply be returned:
ActiveSupport::Cache.lookup_store(MyOwnCacheStore.new) # => returns MyOwnCacheStore.new
# File lib/active_support/cache.rb, line 42 def self.lookup_store(*store_option) store, *parameters = *([ store_option ].flatten) case store when Symbol store_class_name = (store == :drb_store ? "DRbStore" : store.to_s.camelize) store_class = ActiveSupport::Cache.const_get(store_class_name) store_class.new(*parameters) when nil ActiveSupport::Cache::MemoryStore.new else store end end
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