Last active
July 11, 2019 11:01
-
-
Save SnisarOnline/6c1f3b7674d855e96d67b878145ffd24 to your computer and use it in GitHub Desktop.
Фильтер масива обьектов по ключу / вводимым данным / уникальным значениям.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import {Pipe, PipeTransform} from '@angular/core'; | |
/** | |
* Returns filtered array | |
*/ | |
@Pipe({ name: 'filter' }) | |
export class FilterPipe implements PipeTransform { | |
/** | |
* @param array incoming array not sort | |
* @param field name Fields to sort | |
* @param input array to sorting | |
*/ | |
transform(array: any[], field: string, input?: string) { | |
if (array !== undefined && input !== undefined) { | |
input = input.toLowerCase(); | |
if (typeof array[0] === 'string') { | |
return array.filter(function(el: any) { | |
return el.toLowerCase().indexOf(input) > -1; | |
}); | |
} | |
return array.filter(function(el: any) { | |
return el[field].toLowerCase().indexOf(input) > -1; | |
}); | |
} | |
if (array !== undefined && input === undefined) { | |
let allValue = array.map( (elem) => elem[field] ); | |
return Array.from(new Set(allValue)); | |
// OR | |
/* | |
let unique = array.reduce( (acc,elem) => { | |
return acc.add(elem[field]); | |
}, new Set() ); | |
return Array.from(unique); | |
*/ | |
} | |
return array; | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment