[Angular 2] Create a simple search Pipe

This lesson shows you how to create a component and pass its properties as it updates into a Pipe to make a simple searchable list.

import {Pipe} from 'angular2/angular2';@Pipe({
    name: 'simpleSearch'
})export class SimpleSearch{    transform(value, [field, letter]){
        return value.filter((item) => {
            return item[field].includes(letter);
        })
    }
}

import {Component, View, NgFor, FORM_DIRECTIVES} from 'angular2/angular2';
import {TodoService} from './todoService';
import {TodoItemRender} from './todoItemRender';
import {StartsWith} from './startsWith';
import {SimpleSearch} from './simpleSearch';
import {LetterSelect} from './letterSelect';
import {TodoSearch} from './todoSearch';@Component({
    selector: 'todo-list'
})
@View({
    pipes: [StartsWith, SimpleSearch],
    directives: [NgFor, TodoItemRender, FORM_DIRECTIVES, LetterSelect, TodoSearch],
    template: `
          <div>
                <todo-search #todo-search></todo-search>
                {{todoSearch.term}}
                <todo-item-render
                    *ng-for="#todo of (todoService.todos
                    | startsWith:'title':letterSelect.selectedLetter)
                    | simpleSearch:'title':todoSearch.term"
                    [todoinput]="todo"
                >
                </todo-item-render>
                <letter-select #letter-select></letter-select>
          </div>
    `
})export class TodoList{
    constructor(
        public todoService:TodoService
    ){    }
}

You can group something together by using (), so todoService.todos will piped by startWith, and its result will be handled by simpleSearch.