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PHP, ASP.net, HTML, JavaScript, Yii and MySQL

In Yii2 compare two numbers attributes in operator function. you will found that it not working properly. This is because the wrongly “type” in compare validation rules.

You may need to set the type to number as below:

'type' => 'number'

Example:

['min_price', 'compare', 'compareAttribute' => 'max_price', 'operator' => '<', 'type' => 'number'],

To use the MySQL function on Yii2 ActiveRecord Model you to add “\yii\db\Expression” on your script instead of you direct use the “DATE_ADD” function.

Example:

$model->date = new \yii\db\Expression('DATE_ADD(CURRENT_DATE, INTERVAL - 7 DAY)')

If you want to set full url or absolute url on Yii2 Html img, you may need to use “Url” helper this class on your page.

use yii\helpers\Url;

The way to use:

Html::img(Url::to('@web/images/logo.png', true));

Normally on Yii2 wouldn’t always load the bootstrap.js on our Web App, only when you use js dependent bootstrap widgets such as yii\bootstrap\Modal and etc.

You need add some code on the framework to always load the bootstrap.js on the Web App.
Open the file on the following directory:

If using fancybox ajax display the Yii2 cactiveform you will found that the client validation are not working.

Its due to the form ID was invalid or duplicated in same page. what you need to do is assign a new form id inside cactiveform.

Example

$form = ActiveForm::begin([
  'enableClientValidation' => true,
  'id' => 'new_form_id'
]);

In Yii2 now you are allow pass an array as param to gridview column for display the data. Below is the example how to pass array to gridview column.

Exmaple:
The $status is an array and $data is the model results.

'content' => function($data) use ($status) {
  return (isset($status[$data->status]) ? $status[$data->status] : $data->status);
},

Complete Example:

 $model->search(),
  'filterModel' => $model,
  'showOnEmpty'=>true,
  'columns' => [
    'id',
    'name',
    [
      'attribute' => 'status',
      'filter' => $status,
      'content' => function($data) use ($status) {
        return (isset($status[$data->status]) ? $status[$data->status] : $data->status);
      },
    ],
  ],
]); ?>

In Yii2 they didn’t provide proper SQL user table schema for the developer.
Below was the Yii2 user table schema, and it can be run on MySQL Database.

CREATE TABLE IF NOT EXISTS `user` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `username` varchar(255) NOT NULL,
  `auth_key` varchar(32) NOT NULL,
  `password_hash` varchar(255) NOT NULL,
  `password_reset_token` varchar(255) NOT NULL,
  `email` varchar(100) NOT NULL,
  `status` smallint(10) NOT NULL,
  `role` int(11) NOT NULL,
  `created_at` int(11) NOT NULL,
  `updated_at` int(11) NOT NULL,
  PRIMARY KEY (`id`)
);

And the data.

INSERT INTO `user` (`id`, `username`, `auth_key`, `password_hash`, `password_reset_token`, `email`, `status`, `role`, `created_at`, `updated_at`) VALUES
(1, 'admin', '', '$2y$13$uqe3LPW9ya3RZhynJpPN5um9fvdxUmoqjOqQBJDdIDXSKxRZB5bPu', '', '', 10, 0, 0, 0);

Now you can login with username admin and password 123qwe

In here i wouldn’t introduced what is swiftmailer, who interested can find the information by yourself. In below will explain how to send email with SMTP through Yii2 swiftmailer.

Inside the config folder. Open the web.php configuration file. You will see the following code as below:

$config = [
  ......
  'components' => [
    ......
    'mailer' => [
      'class' => 'yii\swiftmailer\Mailer',
      'useFileTransport' => true, //for the testing purpose, you need to enable this
    ]
  ]
]

If useFileTransport is enable, all the email wouldn’t send out and the email contents will keep a copy at ‘runtime/mail‘ folder.