belongs_to uses class name for default FK
Reported by Michael Klishin (antares) | May 22nd, 2008 @ 05:26 PM
Say I have the following in my DM 0.9 model:
belongs_to :provider, :class_name => "Company"
Unless I specify child_key, DM looks for company_id. ActiveRecord people once decided it would be simpler to swap association implementation if association name is used for default foreign key.
It is pretty important for polymorphic associations as well: implementation with association name based FK and Discriminator would require it to make things reasonable and simple to implement.
Comments and changes to this ticket
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Sam Smoot June 2nd, 2008 @ 05:21 PM
This broke a whole lot of stuff. :-/ Will work on it more tomorrow.
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Dan Kubb (dkubb) June 2nd, 2008 @ 07:43 PM
I would like to work towards using the relationship name for the foreign key prefix in belongs_to() associations. In the example above, assuming the key for Company is a single property named "id" I would expect the foreign key to be "provider_id".
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Jonathan Stott (namelessjon) November 30th, 2008 @ 09:06 AM
- Assigned user cleared.
- Tag set to “associations, belongs_to, dm-core”
- State changed from “new” to “open”
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Dan Kubb (dkubb) January 8th, 2009 @ 04:38 AM
- State changed from “open” to “accepted”
- Assigned user set to “Dan Kubb (dkubb)”
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Dan Kubb (dkubb) February 21st, 2009 @ 03:22 AM
- State changed from “accepted” to “resolved”
This is an old ticket, but I can confirm that the behavior in dm-core 0.10.0 will be to infer the foreign key using the association name rather than the model name.
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Dan Kubb (dkubb)
Lin Jen-Shin
Michael Klishin (antares)