{% macro render_form(caller) %}
<form method="POST"{{ kwargs|xmlattr }}>
  {{ caller() }}
</form>
{% endmacro %}

{% macro render_field_with_errors(field) %}
  <div class="control-group {% if field.errors %}error{% endif %}">
    {% if field.type == 'BooleanField' %}
      <div class="controls">
        <label class="checkbox">
          {{ field(**kwargs)|safe }}{{ field.label.text }}
          {% for error in field.errors %}
            <span class="help-inline">{{ error }}</span>
          {% endfor %}
        </label>
      </div>
    {% else %}
      {{ field.label(class="control-label") }}
      <div class="controls">
        {{ field(**kwargs)|safe }}
        {% for error in field.errors %}
          <span class="help-inline">{{ error }}</span>
        {% endfor %}
      </div>
    {% endif %}
  </div>
{% endmacro %}

{% macro render_field(field) %}
  {% if field.type == 'HiddenField' %}
    {{ field(**kwargs)|safe }}
  {% else %}
    <div class="control-group">
      <div class="controls">
        {{ field(**kwargs)|safe }}
      </div>
    </div>
  {% endif %}
{% endmacro %}