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Views Template rendering in Drupal 8

File name suggessations are as follows: 


[base template name]--[view machine name]--[view display id].html.twig
[base template name]--[view machine name]--[view display type].html.twig
[base template name]--[view display type].html.twig
[base template name]--[view machine name].html.twig
[base template name].html.twig
example I used for an "unformatted list" with machine name "view_name" and with a single block, "block_1"
views-view-unformatted--view-name--block-1.html.twig


Custom Theme template with modules

module name = product_view

Add .module file

/**
 * Implements hook_theme().
 */
function product_view_theme() {
  return [
    'product_view' => [
      'variables' => [
        'product_info' => [],
      ],
    ],
  ];
}

In controller return the theme with data::

$aa = array('name' => 'raj','age' => 20);
$render_array = [
'#theme' => 'product_view',
'#product_info' => $aa,
'#title' => $this->t('Argument Information'),
];
return $render_array;

in twig file you can get the values::


Heelo test


{{kint(product_info)}}


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