input-modal.js

import {Page, Modal, NavParams} from 'ionic/ionic';
import {TransactionsService} from './transactions.service';

@Page({
  templateUrl: 'build/pages/transactions/input-modal.html',
  providers: [TransactionsService]
})
export class TransactionInputModal {
  constructor(modal: Modal, params: NavParams, transactionsService: TransactionsService) {
    this.modal = modal;
    this.transactionsService = transactionsService;
    this.parent = params.get('parent');

    const direction = params.get('direction');
    if (direction) {
      this.transaction = transactionsService.create({direction: direction});
    } else {
      this.transaction = params.get('transaction');
    }
    this.transaction.createdDateInput = this.toDateString(this.transaction.createdDate);
  }

  save(transaction) {
    this.transaction.createdDate = new Date(this.transaction.createdDateInput);
    this.transactionsService.save(transaction).then(transaction => {
      this.parent.refresh();
      this.close();
    });
  }

  toDateString(date) {
   var yyyy = date.getFullYear().toString();
   var mm = (date.getMonth()+1).toString(); // getMonth() is zero-based
   var dd  = date.getDate().toString();
   return yyyy + '-' +(mm[1]?mm:"0"+mm[0]) + '-' + (dd[1]?dd:"0"+dd[0]); // padding
  };
}