Question

我需要帮助将JSON转换为用户可读的文本。

示例JSON：

{
    "condition": "or",
    "rules": [{
            "field": "X",
            "operator": "IN",
            "value": ["A", "B"]
        },
        {
            "field": "Y",
            "operator": "IN",
            "value": ["C", "D"]
        },
        {
            "condition": "and",
            "rules": [{
                    "field": "X",
                    "operator": "IN",
                    "value": ["F", "G"]
                },
                {
                    "condition": "and",
                    "rules": [{
                        "field": "Z",
                        "operator": "IN",
                        "value": ["R", "S"]
                    }]
                }
            ]
        },
        {
            "field": "I",
            "operator": "IN",
            "value": ["D", "K"]
        }
    ]
}

预期产出：

X in('A','B') OR Y in('C','D') OR ( X in('F','G') and ( Z in('R','S') ) ) OR I in('D','K')

提前感谢您的帮助。

Answer 1

好吧，它看起来像一个有趣的挑战，所以我做了它，然后不小心按下了提交按钮，所以在这里。我将把它留给OP来研究它是如何工作的。

＆＃13;

const data = { "condition": "or", "rules": [{ "field": "X", "operator": "IN", "value": ["A", "B"] }, { "field": "Y", "operator": "IN", "value": ["C", "D"] }, { "condition": "and", "rules": [{ "field": "X", "operator": "IN", "value": ["F", "G"] }, { "condition": "and", "rules": [{ "field": "Z", "operator": "IN", "value": ["R", "S"] }] } ] }, { "field": "I", "operator": "IN", "value": ["D", "K"] } ] };

const expect = "X in('A','B') OR Y in('C','D') OR ( X in('F','G') and ( Z in('R','S') ) ) OR I in('D','K')";

const utils = {
  quote(s) { return `'${s}'` },
  parse(obj) {
    return parsers[obj.condition || obj.operator](obj);
  }
};

const parsers = {
  or(obj) {
    return obj.rules.map(utils.parse).join(" OR ");
  },
  and(obj) {
    return `( ${obj.rules.map(utils.parse).join(" and ")} )`;
  },
  IN(obj) {
    return `${obj.field} in(${obj.value.map(utils.quote).join(",")})`;
  }
};

const result = utils.parse(data);

console.log(`match? ${result == expect}`);
console.log(result);

＆＃13;

Answer 2

getObjects(obj, key, val) {
        var objects = [];
        for (var i in obj) {
            if (!obj.hasOwnProperty(i)) continue;
            if (typeof obj[i] == 'object') {
                objects = objects.concat(this.getObjects(obj[i], key, val));
            } else
                if (i == key && obj[i] == val || i == key && val == '') { //
                    objects.push(obj);
                } else if (obj[i] == val && key == '') {
                    if (objects.lastIndexOf(obj) == -1) {
                        objects.push(obj);
                    }
                }
        }
        return objects;
    }
I was able to break JSON into separate objects but stuck on combining those objects with the conditional operator and also to preserve the hierarchy. Thank you doodle for your answer.

将JSON转换为用户可读的文本

2 个答案: