过滤管中较短的情况

Question

我有一个管道，可以过滤客户的日期。现在看起来像：

import { Pipe, PipeTransform } from '@angular/core';
@Pipe({
  name: 'filter'
})
export class FilterPipe implements PipeTransform {
  transform(clients: any[], searchText: string): any[] {
    if(!clients) return [];
    if(!searchText) return clients;

    searchText = searchText.toLowerCase();
    return clients.filter( it => {
      if (it.firstName.toLowerCase().includes(searchText)) {
        return it.firstName.toLowerCase().includes(searchText);
      }
      if (it.lastName.toLowerCase().includes(searchText)) {
        return it.lastName.toLowerCase().includes(searchText);
      }
      if (it.street.toLowerCase().includes(searchText)) {
        return it.street.toLowerCase().includes(searchText);
      }
      if (it.city.toLowerCase().includes(searchText)) {
        return it.city.toLowerCase().includes(searchText);
      }
      if (it.zipCode.toLowerCase().includes(searchText)) {
        return it.zipCode.toLowerCase().includes(searchText);
      }
      if (it.country.toLowerCase().includes(searchText)) {
        return it.country.toLowerCase().includes(searchText);
      }
      if (it.email.toLowerCase().includes(searchText)) {
        return it.email.toLowerCase().includes(searchText);
      }
      if (it.phone.toLowerCase().includes(searchText)) {
        return it.phone.toLowerCase().includes(searchText);
      }
    });
  }
}

但是我明白，条件可以写得更短。请告诉我，我该怎么做？..

Answer 1

这里是一个更简短的写条件的方法：

return clients.filter(it => 
    it.firstName.toLowerCase().includes(searchText) ||
    it.lastName.toLowerCase().includes(searchText) ||
    it.street.toLowerCase().includes(searchText) ||
    it.city.toLowerCase().includes(searchText) ||
    it.zipCode.toLowerCase().includes(searchText) ||
    it.country.toLowerCase().includes(searchText) ||
    it.email.toLowerCase().includes(searchText) ||
    it.phone.toLowerCase().includes(searchText)
);

Answer 2

你可以这样使用

return clients.filter(function (item: any) {
    for (let property in item) {
      if (item[property] === null) {
        continue;
      }
      if (item[property].toString().toLowerCase().includes(searchText)) {
        return true;
      }
    }
    return false;
  });

过滤管中较短的情况

Shorter condition in the filter pipe

javascript

angular

multiple-conditions

pipes-filters