feat(#26): Add support for boolean values in filterBy

Author: danrevah

package.json

@@ -1,6 +1,6 @@
 {
   "name": "ngx-pipes",
-  "version": "1.4.1",
+  "version": "1.4.2",
   "author": "Dan Revah",
   "description": "Useful angular2 pipes",
   "license": "MIT",

src/app/pipes/array/filter-by.spec.ts

@@ -4,10 +4,10 @@ describe('FilterByPipe', () => {
   let pipe: FilterByPipe;
 
   const users = [
-    {id: 1, first_name: 'John', last_name: 'Doe', work: { title: 'Software Engineer', company: 'Foo Tech', previous_company: 'Unknown' }},
-    {id: 2, first_name: 'Jane', last_name: 'West', work: { title: 'Designer', company: 'AAA Solutions', previous_company: 'Unknown' }},
-    {id: 3, first_name: 'Bruce', last_name: 'John', work: { title: 'Software Engineer', company: 'Bar Tech', previous_company: 'Unknown' }},
-    {id: 4, first_name: 'William', last_name: 'Cent', work: { title: 'Designer', company: 'Foo Tech', previous_company: 'Bar Tech' }}
+    {id: 1, first_name: 'John', last_name: 'Doe', work: { title: 'Software Engineer', company: 'Foo Tech', previous_company: 'Unknown' }, current_employed: true},
+    {id: 2, first_name: 'Jane', last_name: 'West', work: { title: 'Designer', company: 'AAA Solutions', previous_company: 'Unknown' }, current_employed: false},
+    {id: 3, first_name: 'Bruce', last_name: 'John', work: { title: 'Software Engineer', company: 'Bar Tech', previous_company: 'Unknown' }, current_employed: true},
+    {id: 4, first_name: 'William', last_name: 'Cent', work: { title: 'Designer', company: 'Foo Tech', previous_company: 'Bar Tech' }, current_employed: false}
   ];
 
   beforeEach(() => {
@@ -29,6 +29,14 @@ describe('FilterByPipe', () => {
     expect(filtered[0]).toEqual(users[0]);
   });
 
+  it('should filter by boolean value', () => {
+    const filtered = pipe.transform(users, ['current_employed'], true);
+
+    expect(filtered.length).toEqual(2);
+    expect(filtered[0]).toEqual(users[0]);
+    expect(filtered[1]).toEqual(users[2]);
+  });
+
   it('should filter by multiple fields with a two result', () => {
     const filtered = pipe.transform(users, ['first_name', 'last_name'], 'John');
 

src/app/pipes/array/filter-by.ts

@@ -1,11 +1,11 @@
 import {PipeTransform, Pipe} from '@angular/core';
-import {isString, extractDeepPropertyByMapKey, isNumberFinite} from '../helpers/helpers';
+import {isString, extractDeepPropertyByMapKey, isNumberFinite, isBoolean} from '../helpers/helpers';
 
 @Pipe({name: 'filterBy'})
 export class FilterByPipe implements PipeTransform {
 
   transform(input: any, props: Array<string>, search: any, strict: boolean = false): any[] {
-    if (!Array.isArray(input) || (!isString(search) && !isNumberFinite(search))) {
+    if (!Array.isArray(input) || (!isString(search) && !isNumberFinite(search) && !isBoolean(search))) {
       return input;
     }
 

src/app/pipes/helpers/helpers.ts

@@ -16,6 +16,10 @@ export function isString(value: any) {
   return typeof value === 'string';
 }
 
+export function isBoolean(value: any) {
+  return typeof value === 'boolean';
+}
+
 export function isObject(value: any) {
   return value !== null && typeof value === 'object';
 }