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问题描述
有没有一种方法可以在Mongoose中指定模式/模型级别的排序顺序?
Is there a way to specify sorting order on the schema/model level in Mongoose?
我有模型Posts
,并且我总是提取'createdAt'
字段排序的帖子.因此,在每个查询上我都必须写.sort('-createdAt')
.我可以将此型号的订单默认设置吗?
I have model Posts
, and I always fetch posts ordered by 'createdAt'
field. Thus on each query I have to write .sort('-createdAt')
. Can I make this order default for this model?
推荐答案
在Mongoose中,无法直接定义查询的默认排序顺序.
There is no way, in Mongoose, directly to define a default sort order on your query.
但是,如果您要一遍又一遍地做某事,则可能希望将其抽象为一个为您完成的功能:
If you're doing something over and over again though, you might want to abstract this into a function that does it for you:
function findPostsByDate(cb){
Posts.find({}).sort('-createdAt').exec(cb);
}
或更通用的东西:
function findXByDate(model, findCriteria, cb){
model.find(findCriteria).sort('-createdAt').exec(cb);
}
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