小编HAR*_*118的帖子

集合中的项目包含一个字符串数组。我想查找数组中最匹配元素的项目并对其进行排序。

考虑一个集合：

[
    {
        "item_name":"Item_1",
        "tags":["A","B","C","D","E"]
    },
    {
        "item_name":"Item_2",
        "tags":["A","B","D","E","G"]
    },
    {
        "item_name":"Item_3",
        "tags":["B","C","E","H"]
    }

]

我想基于像 ["B","D","G","F"] 这样的数组对集合进行排序，它将返回

[

    {
        "item_name":"Item_2",
        "tags":["A","B","D","E","G"]
    },
    {
        "item_name":"Item_1",
        "tags":["A","B","C","D","E"]
    },
    {
        "item_name":"Item_3",
        "tags":["B","C","E","H"]
    }

]

预期的顺序将是 Item_2、Item_1，然后是 Item_3，因为，

• Item_2 匹配 3 个项目（“B”、“D”和“G”）
• 然后 Item_1 有 2 个匹配项（“B”和“D”）
• 最后 Item_3 有 1 场比赛（“B”）

如果不在 mongodb 中，JavaScript 方法也将受到赞赏