My small improvements about yii2

##Please, attention!

Set the application language if provided by GET, session or cookie.

Rewrite from:

• Yii 1.1: SEO-conform Multilingual URLs + Language Selector Widget (i18n)

Added 'basePoint'

We should set new $basePoint instead of 'document' for jQuery selectors when we use Modal of Bootstrap with remote data.

For example '.modal-dialog'

Don't forget to write:

$('body').on('hidden.bs.modal', '.modal', function () {
    $(this).removeData('bs.modal');
})

for clean remote data

Added only $secondRow. We use this if we need two rows in a header

Methods for

• header and body separately
• add additional (probably hidden) row
• several attributes into one column

• added $absent if we don't need data columns
• if we have list of attribute in a header [@see GridView]

Added $defaultSortAttribute. We can set default Sorting for all attributes

'attributes' => ['attribute1', 'attribute2'],
'labels' => ['Label1', 'Label2'],

Set in column for first level

'headerOptions' => [
    'colspan' => '2',
],

Set in column for second level:

'headerOptions' => [
    'secondRow' => true,
],

For other columns:

'headerOptions' => [
    'rowspan' => '2',
],

Don't forget set for column if needed:

'class' => 'common\components\grid\SerialColumn',

'fixedHeader' => true,
'fixedHeaderTemplate' => '<div><div>{header}</div></div><div>{body}</div>',

'afterRow' => ['\common\components\grid\GridView', 'renderTableOtherRow'],
'otherRowOptions' => [
   'style' => 'display: none',
],

And then additional rows after 'columns' => [...]

'otherRowColumns' => [...]