{"id":616,"date":"2023-02-26T10:58:31","date_gmt":"2023-02-26T02:58:31","guid":{"rendered":"https:\/\/www.appblog.cn\/?p=616"},"modified":"2023-04-29T20:18:55","modified_gmt":"2023-04-29T12:18:55","slug":"opencart-twig-template-engine-add-evaluate-filter","status":"publish","type":"post","link":"https:\/\/www.appblog.cn\/index.php\/2023\/02\/26\/opencart-twig-template-engine-add-evaluate-filter\/","title":{"rendered":"OpenCart Twig\u6a21\u677f\u5f15\u64ce\u6dfb\u52a0evaluate\u8fc7\u6ee4\u5668"},"content":{"rendered":"

\u53c2\u8003\uff1ahttps:\/\/stackoverflow.com\/questions\/10945200\/twig-variables-in-twig-variable<\/a><\/p>\n

Twig\u8fc7\u6ee4\u5668<\/h2>\n

Twig Extension:<\/p>\n

<\/p>\n

<?php\n\n\/**\n* A twig extension that will add an "evaluate" filter, for dynamic evaluation.\n*\/\nclass EvaluateExtension extends \\Twig_Extension {\n    \/**\n    * Attaches the innervars filter to the Twig Environment.\n    * \n    * @return array\n    *\/\n    public function getFilters( ) {\n        return array(\n            'evaluate' => new \\Twig_Filter_Method( $this, 'evaluate', array(\n                'needs_environment' => true,\n                'needs_context' => true,\n                'is_safe' => array(\n                    'evaluate' => true\n                )\n            ))\n        );\n    }\n\n    \/**\n     * This function will evaluate $string through the $environment, and return its results.\n     * \n     * @param array $context\n     * @param string $string \n     *\/\n    public function evaluate( \\Twig_Environment $environment, $context, $string ) {\n        $loader = $environment->getLoader( );\n\n        $parsed = $this->parseString( $environment, $context, $string );\n\n        $environment->setLoader( $loader );\n        return $parsed;\n    }\n\n    \/**\n     * Sets the parser for the environment to Twig_Loader_String, and parsed the string $string.\n     * \n     * @param \\Twig_Environment $environment\n     * @param array $context\n     * @param string $string\n     * @return string \n     *\/\n    protected function parseString( \\Twig_Environment $environment, $context, $string ) {\n        $environment->setLoader( new \\Twig_Loader_String( ) );\n        return $environment->render( $string, $context );\n    }\n\n    \/**\n     * Returns the name of this extension.\n     * \n     * @return string\n     *\/\n    public function getName( ) {\n        return 'evaluate';\n    }\n}<\/code><\/pre>\n
Example usage:<\/p>\n
$twig_environment->addExtension( new EvaluateExtension( ) );<\/code><\/pre>\n
In the template:<\/p>\n
{% set var = 'inner variable' %}\n{{'this is a string with an {{var}}'|evaluate}}<\/code><\/pre>\n
OpenCart Twig Evaluate<\/h2>\n
system\/library\/template\/TwigEvaluateExtension.php<\/p>\n
<?php\n\/**\n * Created by PhpStorm.\n * User: yezhou\n * Date: 2018\/5\/23\n * Time: 18:26\n *\/\n\n\/**\n * A twig extension that will add an "evaluate" filter, for dynamic evaluation.\n *\/\nclass TwigEvaluateExtension extends \\Twig_Extension\n{\n    \/**\n     * Attaches the innervars filter to the Twig Environment.\n     *\n     * @return array\n     *\/\n    public function getFilters()\n    {\n        return array(\n            'evaluate' => new \\Twig_Filter_Method($this, 'evaluate', array(\n                'needs_environment' => true,\n                'needs_context' => true,\n                'is_safe' => array(\n                    'evaluate' => true\n                )\n            ))\n        );\n    }\n\n    \/**\n     * This function will evaluate $string through the $environment, and return its results.\n     *\n     * @param array $context\n     * @param string $string\n     *\/\n    public function evaluate(\\Twig_Environment $environment, $context, $string)\n    {\n        $loader = $environment->getLoader();\n\n        $parsed = $this->parseString($environment, $context, $string);\n\n        $environment->setLoader($loader);\n        return $parsed;\n    }\n\n    \/**\n     * Sets the parser for the environment to Twig_Loader_String, and parsed the string $string.\n     *\n     * @param \\Twig_Environment $environment\n     * @param array $context\n     * @param string $string\n     * @return string\n     *\/\n    protected function parseString(\\Twig_Environment $environment, $context, $string)\n    {\n        $environment->setLoader(new \\Twig_Loader_String());\n        return $environment->render($string, $context);\n    }\n\n    \/**\n     * Returns the name of this extension.\n     *\n     * @return string\n     *\/\n    public function getName()\n    {\n        return 'evaluate';\n    }\n}<\/code><\/pre>\n
system\/library\/template\/twig.php<\/p>\n
$this->twig = new \\Twig_Environment($loader, $config);\n$this->twig->addExtension(new \\TwigEvaluateExtension());<\/code><\/pre>\n
system\/storage\/modification\/system\/library\/template\/twig.php<\/p>\n
$this->twig = new \\Twig_Environment($loader, $config);\n$this->twig->addExtension(new \\TwigEvaluateExtension());<\/code><\/pre>\n
Twig Evaluate \u5b9e\u4f8b<\/h2>\n
\u5b9e\u4f8b1<\/h3>\n
    \n
  • tpl<\/li>\n<\/ul>\n
    <div class="col-sm-10">\n  <select name="<?php echo $pm; ?>_status" id="input-status" class="form-control">\n    <?php $pm_status = $pm . '_status'; \n    if ($$pm_status) { ?>\n    <option value="1" selected="selected"><?php echo $text_enabled; ?><\/option>\n    <option value="0"><?php echo $text_disabled; ?><\/option>\n    <?php } else { ?>\n    <option value="1"><?php echo $text_enabled; ?><\/option>\n    <option value="0" selected="selected"><?php echo $text_disabled; ?><\/option>\n    <?php } ?>\n  <\/select>\n<\/div><\/code><\/pre>\n
      \n
    • twig<\/li>\n<\/ul>\n
      <div class="col-sm-10">\n  <select name="payment_{{ pm }}_status" id="input-status" class="form-control">\n    {% set pm_status = pm ~ '_status' %}\n    {% set pm_status_s = '{{ ' ~ pm_status ~ ' }}' %}\n    {% if pm_status_s |evaluate %}\n    <option value="1" selected="selected">{{ text_enabled }}<\/option>\n    <option value="0">{{ text_disabled }}<\/option>\n    {% else %}\n    <option value="1">{{ text_enabled }}<\/option>\n    <option value="0" selected="selected">{{ text_disabled }}<\/option>\n    {% endif %}\n  <\/select>\n<\/div><\/code><\/pre>\n
      \u5b9e\u4f8b2<\/h3>\n
        \n
      • tpl<\/li>\n<\/ul>\n
        <div class="col-sm-10">\n  <input type="text" name="<?php echo $pm; ?>_sort_order" value="<?php $pm_sortorder = $pm . '_sort_order';echo $$pm_sortorder; ?>" placeholder="<?php echo $entry_sort_order; ?>" id="input-sort-order" class="form-control" \/>\n<\/div><\/code><\/pre>\n
          \n
        • twig<\/li>\n<\/ul>\n
          <div class="col-sm-10">\n  {% set pm_sortorder = pm ~ '_sort_order' %}\n  {% set channel_sortorder = '{{ ' ~ pm_sortorder ~ ' }}' %}\n  <input type="text" name="payment_{{ pm }}_sort_order" value="{{ channel_sortorder |evaluate }}" placeholder="{{ entry_sort_order }}" id="input-sort-order" class="form-control" \/>\n<\/div><\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
          \u53c2\u8003\uff1ahttps:\/\/stackoverflow.com\/questions\/10945200\/twig-va […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[173],"tags":[174],"class_list":["post-616","post","type-post","status-publish","format-standard","hentry","category-opencart","tag-twig"],"_links":{"self":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/616","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/comments?post=616"}],"version-history":[{"count":0,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/616\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/media?parent=616"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/categories?post=616"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/tags?post=616"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}