Javascript 或 lodash：过滤具有嵌套数组值的对象数组

Question

我有一个如下的用户数组（我已经缩短了它）：

 [
  {
    "displayName": "Alaotra",
    "districts": [
      {
        "regions_id_region": "11",            
        "id_district": "102"
      },
      {           
        "regions_id_region": "11",            
        "id_district": "101",          
      }
    ]
  },
  {
    "displayName": "Alexandre",
    "districts": [
      {
        "regions_id_region": "42",
        "id_district": "411",           
      },
      {           
        "id_district": "409",           
        "regions_id_region": "42"
      }
    ]
  }
]

每个用户都有一个地区数组。 例如，我想获得一个过滤后的用户数组，其中包含“regions_id_region”=“11”的地区。 Lodash或Vanilla就可以了。 我花了一整天的时间试图实现它，但没有任何成功。 欢迎任何帮助。 谢谢。

Answer 1

过滤器的使用方法如下：

const users = [{
    "displayName": "Alaotra",
    "districts": [{
        "regions_id_region": "11",
        "id_district": "102"
      },
      {
        "regions_id_region": "11",
        "id_district": "101",
      }
    ]
  },
  {
    "displayName": "Alexandre",
    "districts": [{
        "regions_id_region": "42",
        "id_district": "411",
      },
      {
        "id_district": "409",
        "regions_id_region": "42"
      }
    ]
  }
]

const filtered = users.filter(u => u.districts.some(d => d.regions_id_region === '11'))
console.log(filtered)