为什么node.js方法的findRandom()猫鼬不起作用?

问题描述

模式:

var random = require('mongoose-random');

var productSchema = new mongoose.Schema(...)
productSchema.plugin(random, {path: 'r'});

var products = mongoose.model('sportsStore', productSchema);
module.exports = products;

调用findRandom()，控制台显示"[]"

Calling findRandom(), console displays "[]"

getRandomProducts: function (count) {
    products.findRandom().limit(count).exec(function(error, result) {
        console.log(result);  // -> []
    })

方法find()正常工作.

Method find() works correctly.

推荐答案

可能的解决方案在这里-请参见 npm页面猫鼬随机示例.

And probably solution could be here - see the comments on npm page mongoose-random example .

// if you have an existing collection, it must first by synced.
// this will add random data for the `path` key for each doc.

尝试

productSchema.syncRandom(function (err, result) {
   console.log(result.updated);
});

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