Zend_Form submit stops working, when displayed with Display Groups

My Zend_Form has only two elements, text and submit.

When I render the Form as whole, everything works fine.

echo $this->form;

When I render the Form part by part, it gets rendered, but the submit button triggers nothing.

echo $this->form->range;
echo $this->form->submit;

Rendering wiht display groups also leaves the submit butt开发者_如何学Goon dead.

Any ideas?

Thanks in advance!

---

When you echo form object its magic function __toString() gets called which outputs the html generated by default registered decorators . Which includes "" html tag . Which wraps up all the elements added to the zend from . So if you are echoing individual elements you need to manually wrap elements inside html form tag .