ember-pikaday

ember-pikaday provides a datepicker modifier & components for Ember using the Pikaday library.

This addon is fully integration tested, and it provides test helpers to interact with the datepicker in your own tests.

Installation

Prerequisites:

• Ember.js v3.28 or above
• Embroider or ember-auto-import v2

Optional prerequisites:

• If you use the backward-compatible <PikadayInput> or <PikadayInputless> components, your app must depend on either moment or moment-timezone and you should remember to configure your locale and timezone requirements. See Using Moment.js in Ember Apps & Addons.
• But if you only use the new <input {{pikaday}} /> modifier, moment or moment-timezone are optional. Pikaday itself uses them if they present, but doesn't require them.

Anti-prerequisites:

• Remove ember-cli-moment-shim from your app. Earlier versions of this addon required it, but now it will only give you a redundant copy with the one provided by ember-auto-import.

Styles

In order to give apps control over styling, the default CSS does not load unless you tell it to. The recommended way to load the CSS is to create this file:

// app/modifiers/pikaday.js

/* Opt-in to using pikaday's default CSS */
import 'ember-pikaday/pikaday.css';
export { default } from 'ember-pikaday/modifiers/pikaday';

This guarantees that the CSS will load whenever your app uses the {{pikaday}} modifier (and the {{pikaday}} modifier is used internally by all the other provided components, so this covers them too).

Usage

{{pikaday}} modifier

The {{pikaday}} modifier invokes new Pikaday() with your element as Pikaday's field option:

<input
  {{pikaday
    format='DD.MM.YYYY'
    value=this.startDate
    onSelect=this.setStartDate
  }}
/>

The optional value argument can be used to synchronize external changes into Pikaday. Internally, we do this using Pikaday's setDate.

All other named arguments are passed directly to Pikaday, so see Pikaday's configuration docs.

The only behaviors this modifier adds to the stock Pikaday are:

• if you set your <input> element's disabled attribute we will close Pikaday if it had been open.

<PikadayInput> Component

While the input shows a formatted date to the user, the value attribute can be any valid JavaScript date including Date object. If the application sets the attribute without a user interaction the datepicker updates accordingly.

<label>
  Start date:
  <PikadayInput @onSelection={{action 'doSomethingWithSelectedValue'}} />
</label>

You can also pass in other closure actions to handle onOpen, onClose and onDraw events.

<label>
  Start date:
  <PikadayInput
    @onOpen={{action 'doSomethingOnOpen'}}
    @onClose={{action 'doSomethingOnClose'}}
    @onDraw={{action 'doSomethingOnDraw'}}
  />
</label>

You can also change the default format from DD.MM.YYYY to any format string supported by Moment.js.

<label>
  Start date:
  <PikadayInput @format={{'MM/DD/YYYY'}} />
</label>

You can define a theme which will be a CSS class that can be used as a hook for styling different themes.

<label>
  Start date:
  <PikadayInput @theme={{'dark-theme'}} />
</label>

You can change the yearRange. It defaults to 10. the yearRange can be a single number or two comma separated years.

<label>
  Start date:
  <PikadayInput @yearRange={{'4'}} />
</label>

<label>
  Start date:
  <PikadayInput @yearRange={{'2004,2008'}} />
</label>

If the second year of the comma separated years is set to currentYear, it sets the maximum selectable year to the current year.

<label>
  Start date:
  <PikadayInput @yearRange={{'2004,currentYear'}} />
</label>

The readonly attribute is supported as binding so you can make the input readonly for mobile or other use cases.

<label>
  Start date:
  <PikadayInput @readonly={{'readonly'}} />
</label>

The placeholder attribute is supported as binding so you can improve the user experience of your interface.

<label>
  Due date:
  <PikadayInput @placeholder={{'Due date of invoice'}} />
</label>

The disabled attribute is supported as binding so you can disabled the datepicker entirely. If the datepicker is shown to the user and it gets disabled it will close the datepicker itself.

<label>
  Due date:
  <PikadayInput @disabled={{isDisabled}} />
</label>

The firstDay attribute is supported as a binding so you can set the first day of the calendar week. Defaults to Monday.

• 0 = Sunday
• 1 = Monday
• etc...

<label>
  Due date:
  <PikadayInput @firstDay={{0}} />
</label>

The minDate attribute is supported as a binding so you can set the earliest date that can be selected.

<label>
  Due Date:
  <PikadayInput @minDate={{minDate}} />
</label>

The maxDate attribute is supported as a binding so you can set the latest date that can be selected.

<label>
  Due Date:
  <PikadayInput @maxDate={{maxDate}} />
</label>

Return dates in UTC time zone

The date returned by ember-pikaday is in your local time zone due to the JavaScript default behavior of new Date(). This can lead to problems when your application converts the date to UTC. In additive time zones (e.g. +0010) the resulting converted date could be yesterdays date. You can force the component to return a date with the UTC time zone by passing useUTC=true to it.

<label>
  Start date:
  <PikadayInput @useUTC={{true}} />
</label>

ember-pikaday will not automatically convert the date to UTC if your application is setting the datepicker value directly!

Using pikaday specific options

You can pass any custom pikaday option through the component like this

<label>
  <PikadayInput
    @options={{hash
      numberOfMonths=2
      disableWeekends=true
      disableDayFn=(action 'someAction')
    }}
  />
</label>

Please refer to pikaday configuration

<PikadayInputless>

If you don't want to show an input field, you can use the <PikadayInputless/> component instead of <PikadayInput/>. It has the same API, but doesn't support onOpen and onClose. When disabled=true on a pikaday-inputless, the datepicker gets hidden.

Localization

Localizing the datepicker is possible in two steps. To localize the output of the datepicker, this is the formatted string visible in the input field, you simply include all the locales by following the ember-cli-moment-shim instructions and include the following in your ember-cli-build.js

app.import('node_modules/moment/locale/de.js');

To localize the datepicker itself, this is the popup you see after clicking the input, a little more work is necessary. The preferred way to do this is to implement a custom component that extends the PikadayInput component and customizes the i18n attribute. The following example uses the translations provided by Moment.js - naturally you can use your own localized strings instead.

// app/components/pikaday-input.js

import PikadayInput from "ember-pikaday/components/pikaday-input";
import moment from "moment";

export default PikadayInput.extend({
  init(...args) {
    this._super(args);
    this.i18n = {
      previousMonth: 'Vorheriger Monat',
      nextMonth: 'Nächster Monat',
      months: moment.localeData()._months,
      weekdays: moment.localeData()._weekdays,
      weekdaysShort: moment.localeData()._weekdaysShort,
    };
  },
});

Examples

Show ember-pikaday when clicking on a button

<button {{action 'togglePika'}}>Show Pika</button>
{{#if showPika}}
  <PikadayInputless @value={{'2017-07-07'}} />
{{/if}}

// app/controller/index.js
import Ember from 'ember';
export default Ember.Controller.extend({
  actions: {
    togglePika() {
      this.toggleProperty('showPika');
    },
  },
});

Show ember-pikaday when hovering over a div

<div
  {{action 'showPika' on='mouseEnter'}}
  {{action 'hidePika' on='mouseLeave'}}
>
  Hover me to pika
  {{#if showPika}}
    <PikadayInputless @value={{'2017-07-07'}} />
  {{/if}}
</div>

// app/controller/index.js

import Controller from '@ember/controller';
export default Controller.extend({
  actions: {
    showPika() {
      this.set('showPika', true);
    },
    hidePika() {
      this.set('showPika', false);
    },
  },
});

Test Helpers

The test helpers provided by ember-pikaday allow you to interact with the datepicker in your integration and acceptance tests.

Opening Pikaday

To open the datepicker use click from the @ember/test-helpers package:

import { click } from '@ember/test-helpers';

await click('.my-pikaday-input');

Closing Pikaday

Pikaday can be closed with the provided close helper:

import { close as closePikaday } from 'ember-pikaday/test-support';

await closePikaday('.my-pikaday-input');

Interacting with Pikaday

An Interactor, like a page object, provides helpers for getting and setting dates in a date picker:

import { click } from '@ember/test-helpers';
import { Interactor as Pikaday } from 'ember-pikaday/test-support';

await click('#my-datepicker');
await Pikaday.selectDate(new Date(1989, 3, 28));

There are also methods available to check if a specific day, month or year is selected:

await Interactor.selectDate(new Date(1989, 3, 28));

assert.equal(Interactor.selectedYear(), 1989);
assert.equal(Interactor.selectedMonth(), 3);
assert.equal(Interactor.selectedDay(), 28);

Usage in Template Tag Format

For usage in gts or gjs files, modifier and components are exported from the index:

import { pikaday, PikadayInput, PikadayInputless } from 'ember-pikaday';

function doSomethingWithSelectedValue(selectedDate) {
  alert(selectedDate);
}

<template>
  <input
    Start date:
    {{pikaday
      format='DD.MM.YYYY'
      value=this.startDate
      onSelect=this.setStartDate
    }}
  />
  <label>
    End date:
    <PikadayInput
      @format="DD.MM.YYYY"
      @onSelection={{doSomethingWithSelectedValue}}
    />
  </label>
  <label>
    Due date:
    <PikadayInputless
      @format="DD.MM.YYYY"
      @onSelection={{doSomethingWithSelectedValue}}
    />
  </label>
</template>

Other Resources

• Video introduction by EmberScreencasts