javascript - 返回只有子项的父项与嵌套对象的对象数组中的给定搜索字符串匹配

Question

这是来自 my previous question 的后续问题.根据我收到的答案，我能够在对象数组中的嵌套对象中进行搜索。

请找到这个fiddle for example .

var data = [
{
  'booking_name': 'gtec/1101822/lmikdy/ls-rmea/oss11',
  'asset_count': 2,
  'pdg': 'Invalid',
  'user_area': 'Invalid',
  'deployment_number': 'Invalid',
  'spoc': 'invalid',
  'release': 'Invalid',
  'start_date': '2017-06-12 00:00:00',
  'end_date': '2017-06-16 00:00:00',
  'asset_info': [
    {
      'bams_id': 'BAMS-1001423507',
      'hostname': 'GTVOSS11',
      'status': 10,
      'site_location': 'IEAT01 Tipperary',
      'rack_number': 'VIRTUAL RACK',
      'rack_u_position': 0,
      'manufacturer': 'EMC',
      'model': 'VM',
      
    },
    {
      'bams_id': 'BAMS-1001368001',
      'hostname': 'None',
      'status': 10,
      'site_location': 'IEAT01 Tipperary',
      'rack_number': 'VIRTUAL RACK',
      'rack_u_position': 0,
      'manufacturer': 'HP',
      'model': 'HP BL460C GEN8',
      
    }
],
'full_name': 'Invalid (invalid)',
'email_address': 'Invalid'
},
{
  'booking_name': 'gtec/1101822/lmikdy/ls-rmea/oss11',
  'asset_count': 2,
  'pdg': 'Invalid',
  'user_area': 'Invalid',
  'deployment_number': 'Invalid',
  'spoc': 'invalid',
  'release': 'Invalid',
  'start_date': '2017-06-12 00:00:00',
  'end_date': '2017-06-16 00:00:00',
  'asset_info': [
    {
      'bams_id': 'BAMS-1001423507',
      'hostname': 'GTVOSS11',
      'status': 10,
      'site_location': 'IEAT01 Tipperary',
      'rack_number': 'VIRTUAL RACK',
      'rack_u_position': 0,
      'manufacturer': 'EMC',
      'model': 'VM',
      
    }
],
'full_name': 'Invalid (invalid)',
'email_address': 'Invalid'
}];

在这里，当我搜索字符串“emc”时，该函数返回两个正确的对象。但是作为“制造商”的“emc”在子对象中。而每一个子对象都不满足这个条件。我正在寻找的结果，例如“emc”，它应该返回 2 个父对象。第一个父对象应该只有一个子对象(另一个子对象的制造商为“hp”)。第二个父对象应该有一个子对象，因为它与搜索字符串匹配。

我试图用搜索结果创建一个新对象，但没能成功。

如何返回只有满足给定搜索字符串的子对象的父对象？

这是 chatlog on my previous question这有助于理解问题和需求。

Answer 1

您可以使用迭代和递归方法并返回检查结果并在子项与搜索值匹配时构建新对象和数组。

function getValue(item) {
    if (Array.isArray(item)) {
        return item.reduce(iterA, undefined);
    }
    if (item && typeof item === 'object') {
        return iterO(item);
    }
    if (typeof item !== 'object' && item.toString().toLowerCase().indexOf(search) !== -1) {
        return item;
    }
}

function iterO(o) {
    var temp = Object.keys(o).reduce(function (r, k) {
            var value = getValue(o[k]);
            if (value) {
                r = r || {};
                r[k] = value;
            }
            return r;
        }, undefined);

    if (temp) {
        Object.keys(o).forEach(function (k) {
            if (!(k in temp)) {
                temp[k] = o[k];
            }
        });
    }
    return temp;
}

function iterA(r, a) {
    var value = getValue(a);
    if (value) {
        r = r || [];
        r.push(value);
    }
    return r;
}

var data = [{ booking_name: "gtec/1101822/lmikdy/ls-rmea/oss11", asset_count: 2, pdg: "Invalid", user_area: "Invalid", deployment_number: "Invalid", spoc: "invalid", release: "Invalid", start_date: "2017-06-12 00:00:00", end_date: "2017-06-16 00:00:00", asset_info: [{ bams_id: "BAMS-1001423507", hostname: "GTVOSS11", status: 10, site_location: "IEAT01 Tipperary", rack_number: "VIRTUAL RACK", rack_u_position: 0, manufacturer: "EMC", model: "VM" }, { bams_id: "BAMS-1001368001", hostname: "None", status: 10, site_location: "IEAT01 Tipperary", rack_number: "VIRTUAL RACK", rack_u_position: 0, manufacturer: "HP", model: "HP BL460C GEN8" }], full_name: "Invalid (invalid)", email_address: "Invalid" }, { booking_name: "gtec/1101822/lmikdy/ls-rmea/oss11", asset_count: 2, pdg: "Invalid", user_area: "Invalid", deployment_number: "Invalid", spoc: "invalid", release: "Invalid", start_date: "2017-06-12 00:00:00", end_date: "2017-06-16 00:00:00", asset_info: [{ bams_id: "BAMS-1001423507", hostname: "GTVOSS11", status: 10, site_location: "IEAT01 Tipperary", rack_number: "VIRTUAL RACK", rack_u_position: 0, manufacturer: "EMC", model: "VM" }], full_name: "Invalid (invalid)", email_address: "Invalid" }],
    search = 'emc',
    result = data.reduce(iterA, undefined);

console.log(result);

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