err.log

[Fri Feb 06 14:29:06.602584 2015] [:error]     tables.DataTableView.__init__(self, workflow.request)
[Fri Feb 06 14:29:06.602613 2015] [:error]   File "/usr/lib/python2.7/dist-packages/horizon/tables/views.py", line 29, in __init__
[Fri Feb 06 14:29:06.602642 2015] [:error]     super(MultiTableMixin, self).__init__(*args, **kwargs)
[Fri Feb 06 14:29:06.602670 2015] [:error] TypeError: __init__() takes exactly 1 argument (2 given)

mro.txt

(
	<class 'pce_project_attributes.overrides.workflows.CustomAttributesStep'>, 
	<class 'pce_project_attributes.overrides.workflows.DataTableStep'>, 
	<class 'horizon.workflows.base.Step'>, 
	<class 'horizon.tables.views.DataTableView'>, 
	<class 'horizon.tables.views.MultiTableView'>, 
	<class 'horizon.tables.views.MultiTableMixin'>, ### DIES
	<class 'django.views.generic.base.TemplateView'>, 
	<class 'django.views.generic.base.TemplateResponseMixin'>, 
	<class 'django.views.generic.base.ContextMixin'>, 
	<class 'django.views.generic.base.View'>, <type 'object'>
)

superclasses.py

class MultiTableMixin(object):
    """A generic mixin which provides methods for handling DataTables."""
    data_method_pattern = "get_%s_data"

    def __init__(self, *args, **kwargs):
        super(MultiTableMixin, self).__init__(*args, **kwargs)
        # [...]

        
class MultiTableView(MultiTableMixin, generic.TemplateView):
    pass  # no __init__()


class DataTableView(MultiTableView):
    pass  # no __init__()


class Step(object):
    def __init__(self, workflow):
        super(Step, self).__init__()
        # [...]

class DataTableStep(workflows.Step, tables.DataTableView):
    """
    A Workflow step that can show a (potentially editable) DataTable.
    All the real work happens in the subclass, but this sets up the
    inheritance.
    """
    contributes = ()  # nada, zilch, bupkiss

    def __init__(self, workflow):
        print self.__mro__
        super(DataTableStep, self).__init__(workflow)
        tables.DataTableView.__init__(self, workflow.request)