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2022-03-15-implement-icon-cache-filter.md

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title issue author author_email
Fix html and implement icon cache filter
NEXT-18411
Stefan Sluiter

Storefront

  • Added Shopware\Storefront\Framework\Twig\Extension\IconCacheTwigFilter to add every icon definition only once per page.
  • Changed all icons in Storefront/Resources/app/storefront/dist/assets/icon/*. Removed fill attribute and added defs.
  • Added Shopware\Storefront\Theme\Command\ThemePrepareIconsCommand to prepare icons for storefront usage.
  • Changed Shopware\Storefront\Controller\StorefrontController::renderStorefront by enabling IconCacheTwigFilter.
  • Added new dependency meyfa/php-svg.
  • Changed Storefront/Resources/views/storefront/utilities/icon.html.twig to add sw_icon_cache filter to icon implementation.
  • Changed Storefront/Resources/views/storefront/layout/meta.html.twig to only render <link rel="apple-touch-icon"> when sw-logo-share is not empty.
  • Changed Storefront/Resources/views/storefront/layout/footer/footer.html.twig. Added role=list attribute to footerColumns and role=listitem attribute to collapseFooterHotlineTitle.
  • Deprecated span in Storefront/Resources/views/storefront/component/review/rating.html.twig. Changed span product-review-rating to div
  • Deprecated span in Storefront/Resources/views/storefront/component/review/point.html.twig. Changed span product-review-point to div
  • Deprecated label in Storefront/Resources/views/storefront/component/listing/filter/filter-rating-select-item.html.twig. Moved label filter-rating-select-item-label above block component_filter_rating_select_list_item_label_rating.

Upgrade Information

New Twig filter sw_icon_cache

From now on, all icons implemented via sw_icon is wrapped with sw_icon_cache. This causes all icons only be defined once per html page and multiple occurences be referenced by id.

Example

First implementation of the star icon:

<svg xmlns="http://www.w3.org/2000/svg" 
     xmlns:xlink="http://www.w3.org/1999/xlink" 
     width="24" height="24" viewBox="0 0 24 24">
    <defs>
        <path id="icons-solid-star" 
              d="M6.7998 23.3169c-1.0108.4454-2.1912-.0129-2.6367-1.0237a2 2 0 0 1-.1596-1.008l.5724-5.6537L.7896 11.394c-.736-.8237-.6648-2.088.1588-2.824a2 2 0 0 1 .9093-.4633l5.554-1.2027 2.86-4.9104c.556-.9545 1.7804-1.2776 2.7349-.7217a2 2 0 0 1 .7216.7217l2.86 4.9104 5.554 1.2027c1.0796.2338 1.7652 1.2984 1.5314 2.378a2 2 0 0 1-.4633.9093l-3.7863 4.2375.5724 5.6538c.1113 1.0989-.6894 2.08-1.7883 2.1912a2 2 0 0 1-1.008-.1596L12 21.0254l-5.2002 2.2915z">
        </path>
    </defs>
    <use xlink:href="#icons-solid-star"></use>
</svg>

Following implementations of the star icon:

<svg xmlns="http://www.w3.org/2000/svg" 
     xmlns:xlink="http://www.w3.org/1999/xlink" 
     width="24" height="24" viewBox="0 0 24 24">
    <use xlink:href="#icons-solid-star"></use>
</svg>

This behaviour can be disabled by setting the system config core.storefrontSettings.iconCache to false. The Setting can be found in the administration under Settings-> System->Storefront->Activate icon cache From 6.5.0.0 on this will be enabled by default.

You can enable and disable this behaviour on a template basis by calling the new twig function sw_icon_cache_enable and sw_icon_cache_disable.

New Command theme:prepare-icons

The new command theme:prepare-icons prepares svg icons for usage in the storefront with compatibility with the icon cache. The command requires a path for the icons to prepare and a package name for the icons and will save all updated icons to a subdirectory prepared. Optional you can also set the following options:

  • --cleanup (true|false) - This will remove all unnecessary attributes from the icons.
  • --fillcolor (color) - This will add this colorcode to the fill attribute.
  • --fillrule (svg fill rule) - This will add the fill rule to the fill-rule attribute
/bin/console theme:prepare-icons /app/platform/src/Storefront/Resources/app/storefront/dist/assets/icon/default/ default -c true -r evenodd -f #12ef21