impress/app/models/pet_state.rb

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class PetState < ActiveRecord::Base
SwfAssetType = 'biology'
has_many :parent_swf_asset_relationships, :foreign_key => 'parent_id',
:conditions => {:swf_asset_type => SwfAssetType}
has_many :swf_assets, :through => :parent_swf_asset_relationships
belongs_to :pet_type
alias_method :swf_asset_ids_from_association, :swf_asset_ids
def swf_asset_ids
self['swf_asset_ids']
end
def swf_asset_ids=(ids)
self['swf_asset_ids'] = ids
end
def self.from_pet_type_and_biology_info(pet_type, info)
swf_asset_ids = []
info.each do |asset_info|
if asset_info
swf_asset_ids << asset_info[:part_id].to_i
end
end
swf_asset_ids_str = swf_asset_ids.join(',')
if pet_type.new_record?
pet_state = self.new :swf_asset_ids => swf_asset_ids_str
else
pet_state = self.find_or_initialize_by_pet_type_id_and_swf_asset_ids(
pet_type.id,
swf_asset_ids_str
)
end
existing_swf_assets = SwfAsset.find_all_by_id(swf_asset_ids)
existing_swf_assets_by_id = {}
existing_swf_assets.each do |swf_asset|
existing_swf_assets_by_id[swf_asset.id] = swf_asset
end
existing_relationships_by_swf_asset_id = {}
unless pet_state.new_record?
pet_state.parent_swf_asset_relationships.each do |relationship|
existing_relationships_by_swf_asset_id[relationship.swf_asset_id] = relationship
end
end
pet_state.pet_type = pet_type # save the second case from having to look it up by ID
relationships = []
info.each do |asset_info|
if asset_info
swf_asset_id = asset_info[:part_id].to_i
swf_asset = existing_swf_assets_by_id[swf_asset_id]
unless swf_asset
swf_asset = SwfAsset.new
swf_asset.id = swf_asset_id
end
swf_asset.origin_biology_data = asset_info
swf_asset.origin_pet_type = pet_type
relationship = existing_relationships_by_swf_asset_id[swf_asset_id]
unless relationship
relationship ||= ParentSwfAssetRelationship.new
relationship.parent_id = pet_state.id
relationship.swf_asset_type = SwfAssetType
relationship.swf_asset_id = swf_asset.id
end
relationship.swf_asset = swf_asset
relationships << relationship
end
end
pet_state.parent_swf_asset_relationships = relationships
pet_state
end
end