{% set describedby = ((field.id ~ '-error') if error else None, (field.id ~ '-help') if field.help_text else None) | select | join(' ') %}
<div class="{% if error %}{{ field.error_class }}{% endif %}">
    <input type="file"
           class="form-control {% if error %}is-invalid{% endif %}"
           id="{{ field.id }}"
           name="{{ field.id }}"
           {% if error %}aria-invalid="true"{% endif %}
           {% if describedby %}aria-describedby="{{ describedby }}"{% endif %}
           {{ field.input_params() | safe }} />
    {% if field.help_text %}<small class="form-hint" id="{{ field.id }}-help">{{ field.help_text }}</small>{% endif %}
</div>
{% include "fields/form/_error.html" %}
{% if request.state.action=='EDIT' and field._isvalid_value(data) %}
    <div class="mt-2 border p-2">
        {% include "fields/detail/file.html" %}
        {% include "fields/form/_delete.html" %}
    </div>
{% endif %}