Ruby-on-rails Rails 从父级中删除子级关联
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Rails Remove child association from parent
提问by Wes Foster
I have this (Contract and Accessory are associated with has_and_belongs_to_many):
我有这个（合同和附件与 has_and_belongs_to_many 相关联）：
# Get the contract and specific accessory based on params
@contract = Contract.find(params[:id])
@accessory = @contract.accessories.find(params[:accessory_id])
Now, I'm wanting to remove that specific accessory from @contract. I don't want to delete the record from the DB, but simply want to remove the association between the two.
现在，我想从@contract 中删除该特定附件。我不想从数据库中删除记录，而只想删除两者之间的关联。
What's the railsy way of doing this?
这样做的愚蠢方法是什么？
Thanks!
谢谢！
回答by Chris Salzberg
How about this:
这个怎么样：
@contract.accessories.delete(@accessory)
See also: How do I remove a single HABTM associated item without deleting the item itself?
