Django ViewFlow: Navigate Step based on Validation











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I am using the HelloWorld example located at the ViewFlow cookbook.
The whole source code is same as the helloworld project with the only change being:



flows.py



check_approve = (

    flow.If(lambda activation: activation.process.approved)

    .Then(this.send)

    .Else(this.start)  # Edited (was this.end)

)


So basically I intend that if user keeps the Approved checkbox as un-selected and proceeds then it will push the task back to the start step.



I get this error when I run it:



NotImplementedError at /workflow/helloworld/helloworld/3/approve/11/

No exception message supplied



    Internal Server Error: /workflow/helloworld/helloworld/3/approve/11/

Traceback (most recent call last):

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner

    response = get_response(request)

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/core/handlers/base.py", line 187, in _get_response

    response = self.process_exception_by_middleware(e, request)

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/core/handlers/base.py", line 185, in _get_response

    response = wrapped_callback(request, *callback_args, **callback_kwargs)

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/views/generic/base.py", line 68, in view

    return self.dispatch(request, *args, **kwargs)

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/utils/decorators.py", line 67, in _wrapper

    return bound_func(*args, **kwargs)

  File "/usr/lib/python3.6/contextlib.py", line 52, in inner

    return func(*args, **kwds)

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/decorators.py", line 213, in _wrapper

    return view(request, **kwargs)

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/utils/decorators.py", line 63, in bound_func

    return func.__get__(self, type(self))(*args2, **kwargs2)

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/flow/views/task.py", line 70, in dispatch

    return super(BaseFlowMixin, self).dispatch(request, **kwargs)

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/views/generic/base.py", line 88, in dispatch

    return handler(request, *args, **kwargs)

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/views/generic/edit.py", line 240, in post

    return super(BaseUpdateView, self).post(request, *args, **kwargs)

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/views/generic/edit.py", line 183, in post

    return self.form_valid(form)

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/flow/views/task.py", line 86, in form_valid

    self.activation_done(*args, **kwargs)

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/flow/views/task.py", line 78, in activation_done

    self.activation.done()

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 44, in __call__

    return self.descriptor(self.instance, *args, **kwargs)

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 112, in __call__

    result = self.func(instance, *args, **kwargs)

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/activation.py", line 384, in done

    self.activate_next()

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 44, in __call__

    return self.descriptor(self.instance, *args, **kwargs)

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 112, in __call__

    result = self.func(instance, *args, **kwargs)

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/activation.py", line 396, in activate_next

    self.flow_task._next.activate(prev_activation=self, token=self.task.token)

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/__init__.py", line 154, in activate

    return self.activation_class.activate(self, prev_activation, token)

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/activation.py", line 561, in activate

    activation.perform()

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 44, in __call__

    return self.descriptor(self.instance, *args, **kwargs)

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 112, in __call__

    result = self.func(instance, *args, **kwargs)

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/activation.py", line 525, in perform

    self.activate_next()

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 44, in __call__

    return self.descriptor(self.instance, *args, **kwargs)

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 169, in __call__

    result = self.func(instance, *args, **kwargs)

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/nodes/ifgate.py", line 24, in activate_next

    self.flow_task._on_false.activate(prev_activation=self, token=self.task.token)

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/__init__.py", line 154, in activate

    return self.activation_class.activate(self, prev_activation, token)

  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/activation.py", line 216, in activate

    raise NotImplementedError

NotImplementedError





django django-viewflow







share|improve this question


























    up vote
    0
    down vote

    favorite












    I am using the HelloWorld example located at the ViewFlow cookbook.
    The whole source code is same as the helloworld project with the only change being:



    flows.py



    check_approve = (
    
    flow.If(lambda activation: activation.process.approved)
    
    .Then(this.send)
    
    .Else(this.start)  # Edited (was this.end)
    
)


    So basically I intend that if user keeps the Approved checkbox as un-selected and proceeds then it will push the task back to the start step.



    I get this error when I run it:



    NotImplementedError at /workflow/helloworld/helloworld/3/approve/11/
    
No exception message supplied
    

    
    Internal Server Error: /workflow/helloworld/helloworld/3/approve/11/
    
Traceback (most recent call last):
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
    
    response = get_response(request)
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/core/handlers/base.py", line 187, in _get_response
    
    response = self.process_exception_by_middleware(e, request)
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/core/handlers/base.py", line 185, in _get_response
    
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/views/generic/base.py", line 68, in view
    
    return self.dispatch(request, *args, **kwargs)
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/utils/decorators.py", line 67, in _wrapper
    
    return bound_func(*args, **kwargs)
    
  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
    
    return func(*args, **kwds)
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/decorators.py", line 213, in _wrapper
    
    return view(request, **kwargs)
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/utils/decorators.py", line 63, in bound_func
    
    return func.__get__(self, type(self))(*args2, **kwargs2)
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/flow/views/task.py", line 70, in dispatch
    
    return super(BaseFlowMixin, self).dispatch(request, **kwargs)
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/views/generic/base.py", line 88, in dispatch
    
    return handler(request, *args, **kwargs)
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/views/generic/edit.py", line 240, in post
    
    return super(BaseUpdateView, self).post(request, *args, **kwargs)
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/views/generic/edit.py", line 183, in post
    
    return self.form_valid(form)
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/flow/views/task.py", line 86, in form_valid
    
    self.activation_done(*args, **kwargs)
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/flow/views/task.py", line 78, in activation_done
    
    self.activation.done()
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 44, in __call__
    
    return self.descriptor(self.instance, *args, **kwargs)
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 112, in __call__
    
    result = self.func(instance, *args, **kwargs)
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/activation.py", line 384, in done
    
    self.activate_next()
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 44, in __call__
    
    return self.descriptor(self.instance, *args, **kwargs)
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 112, in __call__
    
    result = self.func(instance, *args, **kwargs)
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/activation.py", line 396, in activate_next
    
    self.flow_task._next.activate(prev_activation=self, token=self.task.token)
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/__init__.py", line 154, in activate
    
    return self.activation_class.activate(self, prev_activation, token)
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/activation.py", line 561, in activate
    
    activation.perform()
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 44, in __call__
    
    return self.descriptor(self.instance, *args, **kwargs)
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 112, in __call__
    
    result = self.func(instance, *args, **kwargs)
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/activation.py", line 525, in perform
    
    self.activate_next()
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 44, in __call__
    
    return self.descriptor(self.instance, *args, **kwargs)
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 169, in __call__
    
    result = self.func(instance, *args, **kwargs)
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/nodes/ifgate.py", line 24, in activate_next
    
    self.flow_task._on_false.activate(prev_activation=self, token=self.task.token)
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/__init__.py", line 154, in activate
    
    return self.activation_class.activate(self, prev_activation, token)
    
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/activation.py", line 216, in activate
    
    raise NotImplementedError
    
NotImplementedError





    django django-viewflow







    share|improve this question
























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      I am using the HelloWorld example located at the ViewFlow cookbook.
      The whole source code is same as the helloworld project with the only change being:



      flows.py



      check_approve = (
      
    flow.If(lambda activation: activation.process.approved)
      
    .Then(this.send)
      
    .Else(this.start)  # Edited (was this.end)
      
)


      So basically I intend that if user keeps the Approved checkbox as un-selected and proceeds then it will push the task back to the start step.



      I get this error when I run it:



      NotImplementedError at /workflow/helloworld/helloworld/3/approve/11/
      
No exception message supplied
      

      
    Internal Server Error: /workflow/helloworld/helloworld/3/approve/11/
      
Traceback (most recent call last):
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
      
    response = get_response(request)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/core/handlers/base.py", line 187, in _get_response
      
    response = self.process_exception_by_middleware(e, request)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/core/handlers/base.py", line 185, in _get_response
      
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/views/generic/base.py", line 68, in view
      
    return self.dispatch(request, *args, **kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/utils/decorators.py", line 67, in _wrapper
      
    return bound_func(*args, **kwargs)
      
  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
      
    return func(*args, **kwds)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/decorators.py", line 213, in _wrapper
      
    return view(request, **kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/utils/decorators.py", line 63, in bound_func
      
    return func.__get__(self, type(self))(*args2, **kwargs2)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/flow/views/task.py", line 70, in dispatch
      
    return super(BaseFlowMixin, self).dispatch(request, **kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/views/generic/base.py", line 88, in dispatch
      
    return handler(request, *args, **kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/views/generic/edit.py", line 240, in post
      
    return super(BaseUpdateView, self).post(request, *args, **kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/views/generic/edit.py", line 183, in post
      
    return self.form_valid(form)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/flow/views/task.py", line 86, in form_valid
      
    self.activation_done(*args, **kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/flow/views/task.py", line 78, in activation_done
      
    self.activation.done()
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 44, in __call__
      
    return self.descriptor(self.instance, *args, **kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 112, in __call__
      
    result = self.func(instance, *args, **kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/activation.py", line 384, in done
      
    self.activate_next()
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 44, in __call__
      
    return self.descriptor(self.instance, *args, **kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 112, in __call__
      
    result = self.func(instance, *args, **kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/activation.py", line 396, in activate_next
      
    self.flow_task._next.activate(prev_activation=self, token=self.task.token)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/__init__.py", line 154, in activate
      
    return self.activation_class.activate(self, prev_activation, token)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/activation.py", line 561, in activate
      
    activation.perform()
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 44, in __call__
      
    return self.descriptor(self.instance, *args, **kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 112, in __call__
      
    result = self.func(instance, *args, **kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/activation.py", line 525, in perform
      
    self.activate_next()
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 44, in __call__
      
    return self.descriptor(self.instance, *args, **kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 169, in __call__
      
    result = self.func(instance, *args, **kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/nodes/ifgate.py", line 24, in activate_next
      
    self.flow_task._on_false.activate(prev_activation=self, token=self.task.token)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/__init__.py", line 154, in activate
      
    return self.activation_class.activate(self, prev_activation, token)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/activation.py", line 216, in activate
      
    raise NotImplementedError
      
NotImplementedError





      django django-viewflow







      share|improve this question













      I am using the HelloWorld example located at the ViewFlow cookbook.
      The whole source code is same as the helloworld project with the only change being:



      flows.py



      check_approve = (
      
    flow.If(lambda activation: activation.process.approved)
      
    .Then(this.send)
      
    .Else(this.start)  # Edited (was this.end)
      
)


      So basically I intend that if user keeps the Approved checkbox as un-selected and proceeds then it will push the task back to the start step.



      I get this error when I run it:



      NotImplementedError at /workflow/helloworld/helloworld/3/approve/11/
      
No exception message supplied
      

      
    Internal Server Error: /workflow/helloworld/helloworld/3/approve/11/
      
Traceback (most recent call last):
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
      
    response = get_response(request)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/core/handlers/base.py", line 187, in _get_response
      
    response = self.process_exception_by_middleware(e, request)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/core/handlers/base.py", line 185, in _get_response
      
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/views/generic/base.py", line 68, in view
      
    return self.dispatch(request, *args, **kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/utils/decorators.py", line 67, in _wrapper
      
    return bound_func(*args, **kwargs)
      
  File "/usr/lib/python3.6/contextlib.py", line 52, in inner
      
    return func(*args, **kwds)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/decorators.py", line 213, in _wrapper
      
    return view(request, **kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/utils/decorators.py", line 63, in bound_func
      
    return func.__get__(self, type(self))(*args2, **kwargs2)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/flow/views/task.py", line 70, in dispatch
      
    return super(BaseFlowMixin, self).dispatch(request, **kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/views/generic/base.py", line 88, in dispatch
      
    return handler(request, *args, **kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/views/generic/edit.py", line 240, in post
      
    return super(BaseUpdateView, self).post(request, *args, **kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/django/views/generic/edit.py", line 183, in post
      
    return self.form_valid(form)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/flow/views/task.py", line 86, in form_valid
      
    self.activation_done(*args, **kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/flow/views/task.py", line 78, in activation_done
      
    self.activation.done()
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 44, in __call__
      
    return self.descriptor(self.instance, *args, **kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 112, in __call__
      
    result = self.func(instance, *args, **kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/activation.py", line 384, in done
      
    self.activate_next()
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 44, in __call__
      
    return self.descriptor(self.instance, *args, **kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 112, in __call__
      
    result = self.func(instance, *args, **kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/activation.py", line 396, in activate_next
      
    self.flow_task._next.activate(prev_activation=self, token=self.task.token)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/__init__.py", line 154, in activate
      
    return self.activation_class.activate(self, prev_activation, token)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/activation.py", line 561, in activate
      
    activation.perform()
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 44, in __call__
      
    return self.descriptor(self.instance, *args, **kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 112, in __call__
      
    result = self.func(instance, *args, **kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/activation.py", line 525, in perform
      
    self.activate_next()
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 44, in __call__
      
    return self.descriptor(self.instance, *args, **kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/fsm.py", line 169, in __call__
      
    result = self.func(instance, *args, **kwargs)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/nodes/ifgate.py", line 24, in activate_next
      
    self.flow_task._on_false.activate(prev_activation=self, token=self.task.token)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/__init__.py", line 154, in activate
      
    return self.activation_class.activate(self, prev_activation, token)
      
  File "/home/admin-12/PycharmProjects/viewflow1/venv/lib/python3.6/site-packages/viewflow/activation.py", line 216, in activate
      
    raise NotImplementedError
      
NotImplementedError





      django django-viewflow




      django django-viewflow






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      asked Nov 8 at 8:32









      Srinath Ganesh

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          The problem seem to be that you try to jump to a flow.Start element in the else statement. Please try to jump to e.g. a flow.View element instead.






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          active

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          The problem seem to be that you try to jump to a flow.Start element in the else statement. Please try to jump to e.g. a flow.View element instead.






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          • duplicated approve step and it seems to be working fine, thanks
            – Srinath Ganesh
            2 days ago















          up vote
          2
          down vote



          accepted










          The problem seem to be that you try to jump to a flow.Start element in the else statement. Please try to jump to e.g. a flow.View element instead.






          share|improve this answer








          New contributor




          Andreas is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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          • duplicated approve step and it seems to be working fine, thanks
            – Srinath Ganesh
            2 days ago













          up vote
          2
          down vote



          accepted







          up vote
          2
          down vote



          accepted






          The problem seem to be that you try to jump to a flow.Start element in the else statement. Please try to jump to e.g. a flow.View element instead.






          share|improve this answer








          New contributor




          Andreas is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
          Check out our Code of Conduct.









          The problem seem to be that you try to jump to a flow.Start element in the else statement. Please try to jump to e.g. a flow.View element instead.







          share|improve this answer








          New contributor




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          answered 2 days ago









          Andreas

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          • duplicated approve step and it seems to be working fine, thanks
            – Srinath Ganesh
            2 days ago


















          • duplicated approve step and it seems to be working fine, thanks
            – Srinath Ganesh
            2 days ago
















          duplicated approve step and it seems to be working fine, thanks
          – Srinath Ganesh
          2 days ago




          duplicated approve step and it seems to be working fine, thanks
          – Srinath Ganesh
          2 days ago


















           

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