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Asked: 2026-05-16T19:44:37+00:00

If I have two models. Model1 belongs_to Model2, and Model2 has_one Model1. Thus I

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If I have two models. Model1 belongs_to Model2, and Model2 has_one Model1. Thus I can access Model2 from Model1 as well as Model1 from Model2. Now my question is, can I change the relationship to Model2 belongs_to Model1 and Model1 has_one Model2? It also can let me traverse from Model1 to Model2 and from Model2 to Model1. I’m not sure of that, anyone can explain it please?

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1 Answer

  1. Editorial Team

    You can certainly change a relationship from one way round to the other.

    You’ll obviously need to add a model_1_id column on the model_two table, migrate any existing associations across and remove the model_2_id column on the model_one table.

    I can’t think of anything else you’d particularly need to do to get it to work. The associations behave pretty much identically when belongs_to is paired with has_one.

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