Module: DataMapper::Associations::OneToOne
Public Visibility
Public Instance Method Summary
| #setup(name, model, options = {}) |
Setup one to one relationship between two models. |
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Public Instance Method Details
setup
public
setup(name, model, options = {})
Setup one to one relationship between two models
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# File 'dm-core/lib/dm-core/associations/one_to_one.rb', line 8 def setup(name, model, options = {}) raise ArgumentError, "+name+ should be a Symbol, but was #{name.class}", caller unless Symbol === name raise ArgumentError, "+options+ should be a Hash, but was #{options.class}", caller unless Hash === options repository_name = model.repository.name model.class_eval "# FIXME: I think this is a subtle bug. Since we return the resource directly\n# and not the proxy, then the proxy methods (like save) won't be fired off\n# as needed. To fix this we may need a subclass of OneToMany that returns\n# a proxy object with just a single entry.\ndef \#{name}\n\#{name}_association.first\nend\n\ndef \#{name}=(child_resource)\n\#{name}_association.replace(child_resource.nil? ? [] : [ child_resource ])\nend\n\nprivate\n\ndef \#{name}_association\n@\#{name}_association ||= begin\nrelationship = self.class.relationships(\#{repository_name.inspect})[:\#{name}]\nassociation = Associations::OneToMany::Proxy.new(relationship, self)\nparent_associations << association\nassociation\nend\nend\n", __FILE__, __LINE__ model.relationships(repository_name)[name] = if options.has_key?(:through) RelationshipChain.new( :child_model_name => options.fetch(:class_name, Extlib::Inflection.classify(name)), :parent_model_name => model.name, :repository_name => repository_name, :near_relationship_name => options[:through], :remote_relationship_name => options.fetch(:remote_name, name), :parent_key => options[:parent_key], :child_key => options[:child_key] ) else Relationship.new( Extlib::Inflection.underscore(Extlib::Inflection.demodulize(model.name)).to_sym, repository_name, options.fetch(:class_name, Extlib::Inflection.classify(name)), model.name, options ) end end