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问题描述
Rails 3.2 中是否有任何方便的方法通过将具有特定字段的特定值的记录移动到关系的前面来对 ActiveRecord 关系进行排序?例如，如果 MyModel 有一个属性 country，我想对任何查询返回的关系进行排序，其中记录具有 country='Spain' 到关系的前面.
Is there any convenient way in Rails 3.2 to order an ActiveRecord relation by moving records with a particular value for a particular field to the front of the relation? For instance, if MyModel has an attribute country, I would like to sort relations returned by any query with records having country='Spain' to the front of the relation.
推荐答案
类似这样的事情.显然，'name, id' 将取决于您的型号和要求.
Something like this. Obviously 'name, id' would depend on your model and requirements.
MyModel.order("country = 'Spain' DESC, name, id")
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