Grav-Admin-Plugin/themes/grav/templates/forms/fields/file/file.html.twig

{% extends "forms/field.html.twig" %}
{% set defaults = config.plugins.form %}
{% set files = defaults.files|merge(field|default([])) %}

{% block input %}

    {% if not plugin and not theme %}
        The "file" input field cannot be used in Pages Blueprints. It's intended to be used for Plugins and Themes blueprints.
        Use the "pagemediaselect" type instead.
    {% else %}
        {% if value %}
            <img src="{{ base_url_relative_frontend == '/' ? '/' : base_url_relative_frontend ~ '/'}}{{ value }}" alt="{{ value|replace({(files.destination ~ '/'): ''}) }}" />
            <a href="{{ uri.addNonce(base_url_relative ~ '/media/' ~ base64_encode(base_path ~ '/' ~ value) ~ '/task' ~ config.system.param_sep ~ 'removeFileFromBlueprint' ~ '/blueprint' ~ config.system.param_sep ~ files.blueprint ~ '/field' ~ config.system.param_sep ~ files.name ~ '/redirect' ~ config.system.param_sep ~ base64_encode(uri.path), 'admin-form', 'admin-nonce') }}">
                <i class="fa fa-close"></i>
            </a>
        {% endif %}

        <div class="form-input-wrapper {{ field.size }}">
            <input
                {# required attribute structures #}
                name="{{ (scope ~ field.name)|fieldName ~ '[]' }}"
                {% block input_attributes %}
                    type="file"
                    {% if files.accept %}accept="{{ files.accept|join(',') }}"{% endif %}
                    {{ parent() }}
                {% endblock %}
             />
        </div>
    {% endif %}
{% endblock %}