Sha256: 92258edd9451ee920400448d717fbfe49fd753f7a0afa13c5f675286921e21c8
Contents?: true
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Versions: 9
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Stored size: 1.25 KB
Contents
module PassiveRecord
module Associations
class HasOneAssociation < Struct.new(:parent_class, :child_class_name, :child_name_sym)
def to_relation(parent_model)
HasOneRelation.new(self, parent_model)
end
def target_name_symbol
child_name_sym
end
end
class Relation < Struct.new(:association, :parent_model)
def singular?
true
end
end
class HasOneRelation < Relation
def lookup
child_class.find_by(parent_model_id_field => parent_model.id)
end
def create(attrs={})
child_class.create(
attrs.merge(
parent_model_id_field => parent_model.id
)
)
end
def lookup_or_create
lookup || create
end
def parent_model_id_field
association.parent_class.name.demodulize.underscore + "_id"
end
def child_class
# look in same module as parent...
module_name = association.parent_class.name.deconstantize
module_name = "Object" if module_name.empty?
(module_name.constantize).
const_get(association.child_class_name.singularize)
end
def id
parent_model.id
end
def child_class_name
child_class.name
end
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems