What I mean is if I have two models, connected by a has_and_belongs_to_many association, can I store other data in the join table for each association? That is, the extra data would not be part of a single record in either table, but instead of the connection between them. What I mean is if I have two models, connected
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Rails：是否可以为has_and_belongs_to_many关联添加额外的属性？
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