renderers.py 文件源码

def render_label(content, label_for=None, label_class=None, label_title='', optional=False):
    """
    Render a label with content
    """
    attrs = {}
    if label_for:
        attrs['for'] = label_for
    if label_class:
        attrs['class'] = label_class
    if label_title:
        attrs['title'] = label_title
    builder = '<{tag}{attrs}>{content}{opt}</{tag}>'
    return format_html(
        builder,
        tag='label',
        attrs=mark_safe(flatatt(attrs)) if attrs else '',
        opt=mark_safe('<br><span class="optional">{}</span>'.format(pgettext('form', 'Optional'))) if optional else '',
        content=text_value(content),
    )