cubicweb-conference #5280709 crash in LoginOrRegister with cw 3.20 [validation pending]

2015-04-22 13:26:48 - (cubicweb.web) ERROR: TypeError("'NoneType' object is not callable",)
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/cubicweb/web/application.py", line 462, in core_handle
    result = controller.publish(rset=rset)
  File "/usr/lib/python2.7/dist-packages/cubicweb/web/views/basecontrollers.py", line 136, in publish
    rset=rset, view=view)
  File "/usr/lib/python2.7/dist-packages/cubicweb/cwvreg.py", line 388, in main_template
    res = obj.render(**kwargs)
  File "/usr/lib/python2.7/dist-packages/cubicweb/view.py", line 136, in render
    view_func(**context)
  File "/usr/lib/python2.7/dist-packages/cubicweb/web/views/basetemplates.py", line 163, in call
    view.render(w=w)
  File "/usr/lib/python2.7/dist-packages/cubicweb/view.py", line 136, in render
    view_func(**context)
  File "/usr/lib/python2.7/dist-packages/cubicweb/view.py", line 341, in call
    super(EntityView, self).call(**kwargs)
  File "/usr/lib/python2.7/dist-packages/cubicweb/view.py", line 186, in call
    self.cell_call(row=0, **kwargs)
  File "/usr/share/cubicweb/cubes/cmt/views/__init__.py", line 230, in cell_call
    self.w(view.render(title=False))
  File "/usr/lib/python2.7/dist-packages/cubicweb/view.py", line 136, in render
    view_func(**context)
  File "/usr/share/cubicweb/cubes/conference/views/startup.py", line 57, in call
    self.w(form.render())
  File "/usr/lib/python2.7/dist-packages/cubicweb/web/views/forms.py", line 206, in render
    renderer.render(w, self, kwargs)
  File "/usr/lib/python2.7/dist-packages/cubicweb/web/views/formrenderers.py", line 122, in render
    w(''.join(unicode(x) for x in data))
TypeError: 'NoneType' object is not callable
priorityimportant
typebug
done in0.14.0
load0.500
load left0.000
closed by#2f2a30bf23b6 [views] fix crash with cubicweb 3.20 (closes #5280709)
patch[views] fix crash with cubicweb 3.20 (closes #5280709) [applied]