parameters of datatable in tabletab can't store in session

[markrui]

When I use datatable in a tabletab, I use filter_type = "server" and filter_choices = (('hostname', _("host name"), True),). Then I can't get the data from table. However, it is just OK in datatable directly in view.
I read about source code and write my filter function as below:
def get_filters(self, filters):
        filter_action = self._tables.items()[0][1]._meta._filter_action
        if filter_action:
            filter_field = self._tables.items()[0][1].get_filter_field()
            if filter_action.is_api_filter(filter_field):
                filter_string = self._tables.items()[0][1].get_filter_string()
                if filter_field and filter_string:
                    filters[filter_field] = filter_string
        return filters

I print the self._tables.items()[0][1] and it is the table instance I need. I print self._tables.items()[0][1].get_filter_field() but it is null. Then I read the source code and find the function is like this:
def get_filter_field(self):
        """Get the filter field value used for 'server' type filters. This
        is the value from the filter action's list of filter choices.
        """
        filter_action = self._meta._filter_action
        param_name = '%s_field' % filter_action.get_param_name()
        filter_field = self.request.session.get(param_name, '')
        return filter_field
I print param_name and it is the field from the website. Then I know filter_field is get from the session according to the code note. I print the session(with __dict__) but it doesn't have a field called '*__q_field'(* is short for my table name), so I wonder if the parameters are stored in session as the code note said.

Can anyone give me any advice?

[Gary W. Smith (gary-w-smith)]

Please use the #openstack-horizon IRC channel for help requests (https://wiki.openstack.org/wiki/IRC).