在WordPress中将值从输入字段传递到php函数？

当我从下拉菜单中选择类别时，它会在输入字段中正确更新。理想情况下，它应该更新recipeIndex中的配方过滤器。php。

我尝试用方法“将输入包装在表单中”；获取（&Q）；但这仍然不起作用。

HTML位于配方索引页面上的HTML小部件中。CSS、JavaScript和PHP代码在单独的代码段中（我使用Woody snippets Wordpress插件https://wordpress.org/plugins/insert-php/)

请帮忙。

HTML

<div class="dropdown_container">
      <div class="dropdown">
        <div class="select">
          <span class="select_span">Select Category</span>
          <i class="fa fa-chevron-down"></i>
        </div>
        <form action="" method="get">  
        <input type="hidden" name="category" id="category">
        </form>
        <ul class="dropdown-menu" id="recipeDropdown">
            <li id="All" name="All" value="All">All</li>
          <li id="Vegan" name="Vegan" value="Vegan">Vegan</li>
          <li id="Vegetarian" name="Vegetarian" value="Vegetarian">Vegetarian</li>
        </ul>
      </div>
   </div>

CSS

    
.dropdown_container {
  width: 160px;
}

.select {
    width: 160px;
}

/*Styling Selectbox*/
.dropdown {
  width: 160px;
  display: inline-block;
  background-color: #fff;
  border-radius: 2px;
  box-shadow: 0 0 2px rgb(204, 204, 204);
  transition: all .5s ease;
  position: relative;
  font-size: 14px;
  color: #474747;
  height: 100%;
  text-align: left
}
.dropdown .select {
    cursor: pointer;
    display: block;
    padding: 10px;
}
.dropdown .select > i {
    font-size: 13px;
    color: #888;
    cursor: pointer;
    transition: all .3s ease-in-out;
    float: right;
    line-height: 15px
}
.dropdown:hover {
    box-shadow: 0 0 4px rgb(204, 204, 204)
}
.dropdown:active {
    background-color: #f8f8f8
}
.dropdown.active:hover,
.dropdown.active {
    box-shadow: 0 0 4px rgb(204, 204, 204);
    border-radius: 2px 2px 0 0;
    background-color: #f8f8f8
}
.dropdown.active .select > i {
    transform: rotate(-90deg)
}
.dropdown .dropdown-menu {
    width: 100%;
    position: absolute;
    background-color: #fff;
    left: 0;
    margin-top: 1px;
    box-shadow: 0 1px 2px rgb(204, 204, 204);
    border-radius: 0 1px 2px 2px;
    overflow: hidden;
    display: none;
    overflow-y: auto;
    z-index: 9
}
.dropdown .dropdown-menu li {
    transition: all .2s ease-in-out;
    cursor: pointer
} 
.dropdown .dropdown-menu {
    padding: 0;
    list-style: none
}
.dropdown .dropdown-menu li:hover {
    background-color: #f2f2f2
}
.dropdown .dropdown-menu li:active {
    background-color: #e2e2e2
}

JavaScript

var $ = jQuery;

    $(\'.dropdown\').click(function () {
        $(this).attr(\'tabindex\', 1).focus();
        $(this).toggleClass(\'active\');
        $(this).find(\'.dropdown-menu\').slideToggle(300);
    });
    $(\'.dropdown\').focusout(function () {
        $(this).removeClass(\'active\');
        $(this).find(\'.dropdown-menu\').slideUp(300);
    });
    $(\'.dropdown .dropdown-menu li\').click(function () {
        var value = $(this).attr("value");
        $("input[name=\'category\']").val(value);
        $(this).parents(\'.dropdown\').find(\'span\').text($(this).text());
        $(this).parents(\'.dropdown\').find(\'input\').attr(\'value\', $(this).attr(\'id\'));
    });

PHP

// Posts or Portfolio Widget
add_action( \'elementor/query/recipe-index-filter\', function( $query ) {
    // Modify the posts query here
    $category =  $_GET[\'category\'];
    $query->set( \'category_name\', $category );
} );

<form method="POST" action="" class="my-form"> <input type="hidden" name="category" value="" /> <input type="hidden" name="action" value="recipe_filter" value="123" /> <input type="submit" /> </form>

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