find() 如何访问文档字段以进行操作？ （MongoDB，nodeJS）

Question

hello I would like to know if daily_price > = price_clic * number_view

Model.find({

 daily_price: { 

  $gte: price_clic * number_view

 }

})

const schema = mongoose.Schema({

  price_clic: { type: Number, required: true },
  number_view: { type: Number, required: true, default: 0 },
  daily_price: { type: Number, default: 0 },

})

thank you so much

Answer 1

The following code solved my problem:

$expr: {

  $gte: [
    "$daily_price", { $multiply: ["$price_clic", "$number_view"] },
  ],
},