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# File 'lib/baza_models/model/belongs_to_relations.rb', line 7
def belongs_to(relation_name, args = {})
relation = {
type: :belongs_to,
relation_name: relation_name,
table_name: args[:table_name] || StringCases.pluralize(relation_name),
foreign_key: :"#{relation_name}_id"
}
if args[:class_name]
relation[:class_name] = args.fetch(:class_name)
else
relation[:class_name] = StringCases.snake_to_camel(relation_name)
end
@belongs_to_relations ||= []
@belongs_to_relations << relation
@relationships ||= {}
@relationships[relation_name] = relation
define_method(relation_name) do
if (model = @changes[relation_name])
model
elsif (model = autoloads[relation_name])
model
else
if relation[:class_name]
class_name = relation.fetch(:class_name)
else
class_name = StringCases.snake_to_camel(relation_name)
end
foreign_id = @data.fetch(relation.fetch(:foreign_key))
StringCases.constantize(class_name).find(foreign_id) if foreign_id
end
end
define_method("#{relation_name}=") do |new_model|
@changes[relation.fetch(:foreign_key)] = new_model.id
autoloads.delete(relation_name)
end
end
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