README

Donation widget for Yii2

Yii2-donate is a module for the Yii 2.0 PHP Framework to handle donations. It makes use of the payment service provider Mollie, which is mainly active in Western European countries.

Yii2-donate sports a widget, which can be placed on any page (or even all pages).

Basic functionality

If a visitor selects an amount and presses the 'Donate'-button, she is transfered to a Mollie payment page. If she successfully completes the payment, she is redirected to the site's donate/thanks page, where she is rewarded with a joyful shower of confetti. If the visitor did supply an email address, she receives a 'Thank you' mail. The 'thanks' page also sports a button to resume her visit to the site.

If the visitor cancels the payment, she is redirected to the site's donate/cancel page, from where she can resume her surfing.

At any time, the site's administrator can get an overview of granted donations on the donate page.

Prerequisites

You'll need a Mollie account. It's free, but depending on your country, you may need a valid registration as a (small) business. You'll get two API keys, one for testing purposes and one for the real work. One of the API keys is used tot initialize the module.

It is strongly advised that the app uses Pretty URLs.

Because Yii2-donate may send emails, the mailer component of the application has to be up and running. Be sure that the 'adminEmail' parameter of the application has a sensible value. If you prefer, you may set the 'supportEmail' parameter as well; if set, Yii2-donate will use this.

Installation

Install Yii2-donate in the usual way with Composer. Add the following to the require section of your composer.json file:

"sjaakp/yii2-donate": "*"

or run:

composer require sjaakp/yii2-donate

You can manually install yii2-comus by downloading the source in ZIP-format.

Module

Yii2-donate is a module in the Yii2 framework. It has to be configured in the main configuration file, usually called web.php or main.php in the config directory. Add the following to the configuration array:

<?php
// ...
'modules' => [
    'donate' => [
        'class' => sjaakp\donate\Module::class,
        // several options
    ],
],
// ...

The module has to be bootstrapped. Do this by adding the following to the application configuration array:

<php
// ...
'bootstrap' => [
    'donate',
]
// ...

There probably already is a bootstrap property in your configuration file; just add 'donate' to it.

Important: the module should also be set up in the same way in the console configuration (usually called console.php).

Console command

To complete the installation, a console command have to be run. This will create a database table for the donations:

yii migrate

The migration applied is called sjaakp\donate\migrations\m000000_000000_init.

The Donate widget

Placing the Donate widget in any view is trivial:

<?php
use sjaakp\donate\DonateWidget;
?>
...
<?= DonateWidget::widget() ?>
...

The small, collapsed variant is obtained by:

<?php
use sjaakp\donate\DonateWidget;
?>
...
<?= DonateWidget::widget([
    'small' => true
]) ?>
...

Module options

The Donate module has a range of options. They are set in the application configuration like so:

 <?php
 // ...
 'modules' => [
     'donate' => [
         'class' => sjaakp\donate\Module::class,
         'description' => 'Please, buy me a drink!',
         // ...
         // ... more options ...
     ],
 ],
 // ...

The options (most are optional) are:

• mollieApiKey string One of the API keys obtained from Mollie. Not optional, must be set.
• choices array Amounts to select from. Keys are integers representing the amounts in cents, values are textual representations. Example: [ ..., 250 => '€2,50', 500 => '€5', ... ]. Defaults: amounts of 5, 10, 25, 50, and 100.
• header string|null Text header appearing in the donate-widget. If null (default) no header is rendered.
• includeMessage bool Whether a 'friendly message' field is included in the widget. Default: true.
• confetti bool Whether confetti is shown on the 'thanks' page. Default: true.
• description string|null The textual description displayed on Mollie's payment page. If null (default), defaults to 'Donation for <site name>'.
• locale string|null The locale sent to the payment site. If null, defaults to site's language property.
• mailOptions array Options for the app mailer. Default: see source.
• localTest bool|null If true, performs a dummy-payment on the local system, useful for debugging and testing. If null (default), localTest is set to true if YII_ENV === 'dev', in other words if the site is in the development environment.
• indexAccess array The access rule for the donations overview (donate page). Default: only accessible to authenticated visitors ([ 'allow' => true, 'roles' => ['@'] ]). For most sites, you'll want to refine this.

Internationalization

All of Yii2-donate's utterances are translatable. The translations are in the 'sjaakp\donate\messages' directory.

You can override Yii2-donate's translations by setting the application's message source in the main configuration, like so:

 <?php
 // ...
 'components' => [
     // ... other components ...     
     'i18n' => [
          'translations' => [
               // ... other translations ...
              'donate' => [    // override donate's standard messages
                  'class' => yii\i18n\PhpMessageSource::class,
                  'basePath' => '@app/messages',  // this is a default
                  'sourceLanguage' => 'en-US',    // this as well
              ],
          ],
     ],
     // ... still more components ...
 ]

The translations should be in a file called 'donate.php'.

If you want a single or only a few messages translated and use Yii2-donate's translations for the main part, the trick is to set up 'i18n' like above and write your translation file something like:

  <?php
  // app/messages/nl/donate.php
  
  $donateMessages = Yii::getAlias('@sjaakp/donate/messages/nl/donate.php');
  
  return array_merge (require($donateMessages), [
     'Amount' => 'Bedrag in euro',   // your preferred translation
  ]);

At the moment, the only language implemented is Dutch. Agreed, it's only the world's 52th language, but it happens to be my native tongue. Please, feel invited to translate Yii2-donate in other languages. I'll be more than glad to include them into Yii2-donate's next release.

Module ID

By default, the Module ID is 'donate'. It is set in the module configuration. If necessary (for instance if there is a conflict with another module or application component), you may set the Module ID to something different. Important: in that case, the moduleId property of the Donate widget must be set to this new value as well.

FAQ

Can I change the layout for the Yii2-donate views?

• Use the EVENT_BEFORE_ACTION event. One easy way is to incorporate it in the module setup, like so:

  <?php
  // ...
  'modules' => [
     'donate' => [
         'class' => sjaakp\donate\Module::class,
         'description' => 'Please, buy me a drink!',
         'on beforeAction' => function ($event) {
             $event->sender->layout = '@app/views/layouts/one_column';
         },
         // ... more options ...
     ],
  ],
  // ...