在$ or内不能使用$ in吗？

Question

我正在尝试使用关键字列表过滤数据库，而我现在的操作方式是在所有模型字段中使用$或对每个字段使用$ in进行检查所有关键字正则表达式的。

key_exps是一个正则表达式数组。在我的测试中，它是一个只有一个元素的数组：/ good / i。

//This is my code that I'm trying to fix:    
Ingredient.find({$or:[
    {name: {$in: key_exps}}, 
    {number: {$in: key_exps}},
    {vendor_info: {$in: key_exps}},
    {package_size: {$in: key_exps}},
    {cost: {$in: key_exps}},
    {comment: {$in: key_exps}}]
}, (err, ingredients) => {
    res.json({data: ingredients});
});

//This code works but doesn't allow me to search through multiple keywords:
Ingredient.find({$or:[
    {name: {$in: key_exps}}, 
    {number: {$in: key_exps}},
    {vendor_info: {$in: key_exps}},
    {package_size: {$in: key_exps}},
    {cost: {$in: key_exps}},
    {comment: key_exps.pop()}]
}, (err, ingredients) => {
    res.json({data: ingredients});
});

//This also works but doesn't allow me to search all fields:
Ingredient.find(
    {comment: {$in: key_exps}}, (err, ingredients) => {
    res.json({data: ingredients});
);