{%- macro render_field(field, wide=True, span_size='span2', help_class='help-inline') -%}
    <div class="control-group {% if field.errors %}error{% endif %}">
    {% if field.type in ('HiddenField', 'CSRFTokenField') %}
        {{ field() }}
    {% else %}
        {% if field.type == 'BooleanField' %}
            <div class="controls">
            <label class="checkbox" for="{{ field.label.field_id }}">
                {{ field() }}
                {{ field.label.text }}
            </label>
        {% else %}
            <label class="control-label">{{ field.label.text }} {% if not field.flags.required %} <span class="optional" >(optional)</span>{% endif %}</label>
            <div class="controls">
            {{ field(class=span_size) }}
        {% endif %}
        {% if field.errors %}
            <p class="{{ help_class }}">{{ field.errors|join(' ') }}</p>
        {% elif field.description %}
            <p class="{{ help_class }}">{{ field.description }}</p>
        {% endif %}
        </div>
    {% endif %}
    </div>
{%- endmacro -%}

{%- macro render_fields(form, wide=True, span_size='span2', help_class='help-inline') -%}
    {% for field in form %}
        {{ render_field(field, wide=wide, span_size=span_size, help_class=help_class) }}
    {% endfor %}
{%- endmacro -%}