Determine if a record “is new” in the pre save callback

前端 未结 2 2051
逝去的感伤
逝去的感伤 2021-02-03 17:00

Is there a way to find out if a record \"is new\" (has not been save yet) in the pre save callback of mongoose model schema?

2条回答
  •  你的背包
    2021-02-03 17:44

    var MySchema = new Schema({...});
    
    MySchema.pre('save', function(next) {
        if (this.isNew) {
            // Hooray !
        }
        next();
    });
    

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