<div class="form-group">
    <div class="col-sm-offset-2 col-sm-10">
        <div class="checkbox">
            <label>
                <input type="checkbox" name="{{ field.field_name }}" value="true" {% if field.value %}checked{% endif %}>
                {% if field.label %}{{ field.label }}{% endif %}
            </label>
        </div>
    </div>
</div>
