Module: Invoicing::CachedRecord::ClassMethods

Defined in:
lib/invoicing/cached_record.rb

Instance Method Summary collapse

Instance Method Details

#cached_record_list ⇒ Object

Returns a list of all objects of this class. Like ActiveRecord::Base.find(:all) but coming from the cache.


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# File 'lib/invoicing/cached_record.rb', line 63

def cached_record_list
  cached_record_class_info.list
end

#find_from_ids(ids, options) ⇒ Object

This method overrides the default ActiveRecord::Base.find_from_ids (which is called from ActiveRecord::Base.find) with caching behaviour. find is also used by ActiveRecord when evaluating associations; therefore if another model object refers to a cached record by its ID, calling the getter of that association should result in a cache hit.

FIXME: Currently options is ignored – we should do something more useful with it to ensure CachedRecord behaviour is fully compatible with ActiveRecord.


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# File 'lib/invoicing/cached_record.rb', line 44

def find_from_ids(ids, options)
  expects_array = ids.first.kind_of?(Array)
  return ids.first if expects_array && ids.first.empty?

  ids = ids.flatten.compact.uniq

  case ids.size
    when 0
      raise ::ActiveRecord::RecordNotFound, "Couldn't find #{name} without an ID"
    when 1
      result = cached_record_class_info.find_one(ids.first, options)
      expects_array ? [ result ] : result
    else
      cached_record_class_info.find_some(ids, options)
  end
end

#reload_cache ⇒ Object

Reloads the cached objects from the database.


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# File 'lib/invoicing/cached_record.rb', line 68

def reload_cache
  cached_record_class_info.reload_cache
end