notifications-admin/app/templates/components/file-upload.html

{% macro file_upload(field, button_text="Choose file") %}
  <div class="form-group{% if field.errors %} error{% endif %}" data-module="file-upload">
    <label class="file-upload-label" for="{{ field.name }}">
      {{ field.label }}
      {% if hint %}
        <span class="form-hint">
          {{ hint }}
        </span>
      {% endif %}
      {% if field.errors %}
        <span class="error-message">
          {{ field.errors[0] }}
        </span>
      {% endif %}
    </label>
    {{ field(**{
      'class': 'file-upload-field'
    }) }}
    <label class="file-upload-button" for="{{ field.name }}">
      {{ button_text }}
    </label>
    <label class="file-upload-filename" for="{{ field.name }}"></label>
  </div>
{% endmacro %}