如何从猫鼬中获得特定的不同领域?

我有这样的数据库集合

[
{
name: "Fried Burger",image: "https://burgerimage.com",category: "burger"
},{
name: "Fried Pizza",image: "https://pizzaimage.com",category: "pizza"
},{
name: "Veg Pizza",image: "https://vegpizzaimage.com",{
name: "Fried Pasta",image: "https://friedpastaimage.com",category: "pasta"
}
]

有没有什么方法可以从类别中获得价值而无需重复和单个图像,尽管有多个这样的类别

[
{category: "burger",image:"https://burgerimage.com"},{category: "pizza",image:"https://pizzaimage.com"},//Any image works as long as category is same
{category: "pasta",image:"https://pastaimage.com"}

我使用了 .distinct('category') 但它只会像这样返回,但我也想要一张带有该图像的图像

{
  "category": [
    "Burger","beef","chicken","duck","pasta","pizza","pork"
  ]
}
zzlq55 回答:如何从猫鼬中获得特定的不同领域?

如果你只想要每一个的类别和图像,试试这个


MyModel.find({},'category image',function(err,docs) { })
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