{% load apphooks_config_tags %}
<select name="aldryn_newsblog_category"
    data-list_url="{% namespace_url "article-list" %}"
    data-value_url="{% namespace_url "article-list-by-category" "__CATEGORY__" namespace=instance.app_config.namespace %}"
    data-join_url="{% namespace_url "article-list-by-year-and-category" 2000 "__CATEGORY__" namespace=instance.app_config.namespace %}"
    data-placeholder="__CATEGORY__"
    data-join_name="aldryn_newsblog_year"
    data-pattern=".+">
    <option></option>
    {% for category in categories %}
        <option value="{{ category.slug }}">{{ category.name }}</option>
    {% endfor %}
</select>