我不确定我的问题的正确术语是什么,但是可以使用参数的值来“构建”其适当的.collection
方法吗?
例如,提交的内容有很多图像,标签和文档。根据用户与之交互的方式,我想创建适当的关联。
最初,我只为标签设置了它...
def add_to_submission(task, user, tag)
sub = Submission.find_or_create_by(task: task, user: user)
sub.tags << tag
end
但是有一种方法可以进一步概括它,以便使第三个参数更具动态性?有点像...
def add_to_submission(task, user, associated_item)
sub = Submission.find_or_create_by(task: task, user: user)
items = associated_item.pluralize
sub.items << associated_item
end
def add_to_submission(task, user, associated_item)
submission = Submission.find_or_create_by(task: task, user: user)
children = associated_item.pluralize.to_sym
submission.send(children) << associated_item
end