json - 如何过滤嵌套的 SwiftyJSON 数组

Question

我有一个嵌套多个级别的 SwiftyJSON 数组，我需要根据最低级别的值过滤该数组。下面是一个数组的例子。我需要在 Active == true 上过滤它。实现这一目标的最有效方法是什么？

var colors = JSON([
"Apple" : [
        "Yellow" : [
            "Active" : true,
            "Working" : true,
            "Value" : 0
        ],
        "Red" : [
            "Active" : false,
            "Working" : true,
            "Value" : 0
        ]
],
"Banana" : [
        "Blue" : [
            "Active" : false,
            "Working" : true,
            "Value" : 0
        ],
        "Green" : [
            "Active" : true,
            "Working" : true,
            "Value" : 0
        ]
]
])

期望的输出:

"Apple" : [
        "Yellow" : [
            "Active" : true,
            "Working" : true,
            "Value" : 0
        ]
],
"Banana" : [
        "Green" : [
            "Active" : true,
            "Working" : true,
            "Value" : 0
        ]
]

Answer 1

检查一下

var filteredArray = [JSON]()

for item in colors {
    for subItem in item.1 {
        if subItem.1["Active"].boolValue {
           filteredArray.append(JSON([item.0:JSON([subItem.0:subItem.1])]))
        }
    }
}

print(filteredArray)

输出是包含 Active true 的已过滤子词典的 Dictionaries 数组:

[{
  "Apple" : {
    "Yellow" : {
      "Working" : true,
      "Value" : 0,
      "Active" : true
    }
  }
}, {
  "Banana" : {
    "Green" : {
      "Working" : true,
      "Value" : 0,
      "Active" : true
    }
  }
}]