node.js - mongoose怎么传递一段代码段到mongoodb？

Question

比如

var a = db.collection.find();
var b = [];
a.forEach(item=> {
    if (item.name == 1)
        b.push(item)
});
b;

有一个处理比较复杂的语句代码段，mongoose怎么传递这段代码段到mongoodb？

Answer 1

What is your intention? Looking at your code, you only need to process it in the callback after querying the value