render_form missing name attr

[FingerLiu]

html generated by render_form is <input class="form-control" type="text">
which there is no name attr. This lead to fail POST form, because there is no field data detected when server received data.
Is this on purpose or bug?
If it is a bug, happy to PR .

[cjauvin]

You seem to be absolutely right, and I just lost a few hours banging my head on this, before finding your issue.. For now the only solution I could come up with is to use wtf.quick_form instead of render_form:

https://github.com/mbr/flask-bootstrap/blob/master/sample_app/templates/signup.html#L14

for the moment what I "lose" by doing that is not clear to me at all though. Any idea?