在mongoose预查找中间件上添加条件

Question

我正在使用mongoose-delete插件.

我想构建一个简单的mongoose中间件,所以我添加{deleted:false}到find该架构的每个查询.

var mongoose = require('mongoose'),
    mongooseDelete = require('mongoose-delete'),
    Schema = mongoose.Schema;

var MySchema = new Schema({
  name: {type: String, required: true}
});

MySchema.plugin(mongooseDelete, {deletedAt: true, deletedBy: true});

MySchema.pre('find', function (next){
  // I want to add {deleted: false} to the queries conditions
});

我应该如何实现预先找到的中间件？

Answer 1

在预先找到的中间件中,this是Query对象,因此您可以{deleted: false}使用以下命令添加到查询:

MySchema.pre('find', function() {
    this.where({deleted: false});
});