如何根据猫鼬中内部对象的属性进行过滤？

Question

    const collection = [
      {
        inner_obj: {
          prop: "A"
        }
      }
    ]

    collection.find(
      //code to find outer records based on the `prop` property of column `inner_obj`
    )

如何根据inner_obj列的prop属性查找外部记录。

Answer 1

您可以使用Array.filter 过滤掉数组中不符合条件的项：

const desiredProp = "A"

const collection = [{
  inner_obj: {
    prop: "A"
  }
},
{
  inner_obj: {
    prop: "B"
  }
}]

const filtered = collection.filter(e => e.inner_obj.prop == desiredProp)

console.log(filtered)

Answer 2

你可以试试这个

collection.find({"inner_obj.prop": "A"})