javascript - Lodash 帮助使用搜索词和多个属性名称进行过滤

Question

我希望搜索多列，但是我在互联网上找到的所有代码都仅限于搜索多列的单个搜索词。我希望通过多个搜索词过滤多列

数据:

var propertynames = ['firstName','lastName'];
var data = [
  {
    "city":"Irwin town",
    "address":"1399 Cecil Drive",
    "lastName":"Auer",
    "firstName":"Wanda"
  },
  {
    "city":"Howell haven"
    "address":"168 Arnoldo Light"
    "lastName":"Balistreri",
    "firstName":"Renee"
  }
];
var searchTerm = 'Wanda Auer';

应该生成一个过滤掉第二个对象的数组。谢谢!

Answer 1

我为您的问题创建了两种解决方案。第一个是完全按照您的需要进行:按两个字段过滤集合。第二个更灵活，因为它允许按任意多个字段进行过滤。

第一个解决方案:

function filterByTwoFields(coll, searchFilter) {
  return _.filter(coll, function(item) {
    return (item.firstName + ' ' + item.lastName) === searchTerm;
  });
}

var data = [
  {
    "city":"Irwin town",
    "address":"1399 Cecil Drive",
    "lastName":"Auer",
    "firstName":"Wanda"
  },
  {
    "city":"Howell haven",
    "address":"168 Arnoldo Light",
    "lastName":"Balistreri",
    "firstName":"Renee"
  }
];
var searchTerm = 'Wanda Auer';

var result = filterByTwoFields(data, searchTerm);
alert(JSON.stringify(result));

<script src="https://raw.githubusercontent.com/lodash/lodash/master/dist/lodash.min.js"></script>

第二个解决方案:

function filterByMultipleFields(coll, filter) {
  var filterKeys = _.keys(filter);
  return _.filter(coll, function(item) {
    return _.every(filterKeys, function(key) {
      return item[key] === filter[key];
    });
  });
}

var data = [
  {
    "city":"Irwin town",
    "address":"1399 Cecil Drive",
    "lastName":"Auer",
    "firstName":"Wanda"
  },
  {
    "city":"Howell haven",
    "address":"168 Arnoldo Light",
    "lastName":"Balistreri",
    "firstName":"Renee"
  }
];

var filter = {
  firstName: 'Wanda',
  lastName: 'Auer'
}
var result = filterByMultipleFields(data, filter);
alert(JSON.stringify(result));

<script src="https://raw.githubusercontent.com/lodash/lodash/master/dist/lodash.min.js"></script>