actix-admin/templates/form_elements/input.html

<input 
    class="{{ model_field | get_html_input_class }} 
        {% if 
            model.errors | get(key=model_field.field_name, default="" ) !="" 
            or 
            model.custom_errors | get(key=model_field.field_name, default="" ) !="" 
        %}is-danger{% endif %}"
    type="{{ model_field | get_html_input_type }}"
    value="{{ model.values | get(key=model_field.field_name, default="") }}" 
    name="{{ model_field.field_name }}" 
    placeholder="{{ model_field.field_name }}"
    aria-label="{{ model_field.field_name }}" 
>