template.py 文件源码

def render_to_response(request, template_name, data=None, mimetype=None):
    if mimetype is None:
        mimetype = settings.DEFAULT_CONTENT_TYPE
    original_mimetype = mimetype
    if mimetype == 'application/xhtml+xml':
        # Internet Explorer only understands XHTML if it's served as text/html
        if request.META.get('HTTP_ACCEPT').find(mimetype) == -1:
            mimetype = 'text/html'

    response = HttpResponse(render_to_string(request, template_name, data),
        content_type='%s; charset=%s' % (mimetype, settings.DEFAULT_CHARSET))

    if original_mimetype == 'application/xhtml+xml':
        # Since XHTML is served with two different MIME types, depending on the
        # browser, we need to tell proxies to serve different versions.
        from django.utils.cache import patch_vary_headers
        patch_vary_headers(response, ['User-Agent'])

    return response