Jinja2 macro to render WTForms fields with Twitter Bootstrap

gistfile1.py

{% macro form_field(field) -%}
    {% set with_label = kwargs.pop('with_label', False) %}
    {% set placeholder = '' %}
    {% if not with_label %}
        {% set placeholder = field.label.text %}
    {% endif %}
    <div class="control-group {% if field.errors %}error{% endif %}">
        {% if with_label %}
            <label for="{{ field.id }}" class="control-label">
                {{ field.label.text }}{% if field.flags.required %} *{% endif %}:
            </label>
        {% endif %}
        <div class="controls">
            {% set class_ = kwargs.pop('class_', '') %}
            {% if field.flags.required %}
                {% set class_ = class_ + ' required' %}
            {% endif %}
            {% if field.type == 'BooleanField' %}
                <label class="checkbox">
                    {{ field(class_=class_, **kwargs) }}
                    {{ field.label.text|safe }}
                </label>
            {% else %}
                {% if field.type in ('TextField', 'TextAreaField', 'PasswordField') %}
                    {% set class_ = class_ + ' input-xlarge' %}
                {% elif field.type == 'FileField' %}
                    {% set class_ = class_ + ' input-file' %}
                {% endif %}
                {{ field(class_=class_, placeholder=placeholder, **kwargs) }}
            {% endif %}
            {% if field.errors %}
                <span class="error help-inline">{{ field.errors|join(', ') }}</span>
            {% endif %}
            {% if field.description %}
                <p class="help-block">{{ field.description|safe }}</p>
            {% endif %}
        </div>
    </div>
{%- endmacro %}

Now I understand that I am wrong about field() macro. No need to provide that macro. But I have not understand the **kwargs.Thank you for great code!

This has been very helpful for me. Thank you very much.

I forked and added an if statement to this macro. If you're using a select field then this macro will put a placehold attribute on that select field which is invalid html. I just added an if statement to check for select fields.

Thanks.

I created a fork that renders the field properly with bootstrap 3.0.0

How do I use this macro, where do I add this code?

Can you update this to the latest bootstrap3?

Thanks cancerballs https://gist.github.com/cancerballs/6876797