def setHelper(self):

        for fld in list(self.fields.keys()):
            widget = self.fields[fld].widget
            if type(widget) != forms.CheckboxInput:
                widget.attrs['class'] = 'span12'

        if self.instance.id:
            inputs = {
                "legend_text": "Update {}".format(self.instance),
                "help_text":   "Update an existing visualization.",
                "cancel_url": self.instance.get_absolute_url()
            }
        else:
            inputs = {
                "legend_text": "Create new visualization",
                "help_text":   """
                    Create a custom-visualization.
                    Generally, you will select a subset of available data on the
                    "Data" tab, then will customize the visualization using the
                    "Settings" tab. To view a preview of the visual at any time,
                    select the "Preview" tab.
                """,
                "cancel_url": self.instance.get_list_url(self.instance.assessment.id)
            }

        helper = BaseFormHelper(self, **inputs)
        helper.form_class = None
        helper.form_id = "visualForm"
        return helper

    def setHelper(self):
        for fld in self.fields.keys():
            widget = self.fields[fld].widget
            if type(widget) != forms.CheckboxInput:
                widget.attrs['class'] = 'span12'
            if type(widget) == forms.Textarea:
                widget.attrs['rows'] = 3

        if self.instance.id:
            if self.instance.outcome:
                url = self.instance.outcome.get_absolute_url()
            else:
                url = self.instance.study_population.get_absolute_url()
            inputs = {
                "legend_text": u"Update {}".format(self.instance),
                "help_text": self.HELP_TEXT_UPDATE,
                "cancel_url": url
            }
        else:
            inputs = {
                "legend_text": u"Create new comparison set",
                "help_text": self.HELP_TEXT_CREATE,
                "cancel_url": self.parent.get_absolute_url()
            }

        helper = BaseFormHelper(self, **inputs)
        helper.form_class = None
        return helper

    def setHelper(self):

        # by default take-up the whole row-fluid
        for fld in self.fields.keys():
            widget = self.fields[fld].widget
            if type(widget) not in [forms.CheckboxInput, forms.CheckboxSelectMultiple]:
                widget.attrs['class'] = 'span12'

        helper = BaseFormHelper(self)

        helper.form_method = "GET"
        helper.form_class = None

        helper.add_fluid_row('studies', 4, "span3")
        helper.add_fluid_row('species', 4, "span3")
        helper.add_fluid_row('system', 4, "span3")
        helper.add_fluid_row('paginate_by', 4, "span3")

        helper.layout.append(
            cfb.FormActions(
                cfl.Submit('submit', 'Apply filters'),
            )
        )

        return helper

    def setHelper(self):
        for fld in self.fields.keys():
            widget = self.fields[fld].widget
            if type(widget) != forms.CheckboxInput:
                widget.attrs['class'] = 'span12'
            if type(widget) == forms.Textarea:
                widget.attrs['rows'] = 3

        if self.instance.id:
            inputs = {
                'legend_text': u'Update {}'.format(self.instance),
                'help_text': self.HELP_TEXT_UPDATE,
                'cancel_url': self.instance.get_absolute_url()
            }
        else:
            inputs = {
                'legend_text': u'Create new cell type',
                'help_text': self.HELP_TEXT_CREATE,
                'cancel_url': self.instance.study.get_absolute_url()
            }

        helper = BaseFormHelper(self, **inputs)
        helper.form_class = None
        helper.add_fluid_row('species', 3, 'span4')
        helper.add_fluid_row('cell_type', 2, 'span6')
        helper.add_fluid_row('tissue', 2, 'span6')

        return helper

    def setHelper(self):
        buttons = cfb.FormActions(
            cfl.Submit('login', 'Create account'),
            cfl.HTML(
                '<a role="button" class="btn btn-default" href="{}">Cancel</a>'
                .format(reverse('user:login'))),
        )

        helper = BaseFormHelper(
            self,
            horizontal=False,
            legend_text='Create an account',
            buttons=buttons)
        helper.form_class = 'loginForm'

        return helper