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["Gary W. Smith" <gary.smith@xxxxxxxx>]

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** Changed in: horizon
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1625061

Title:
  parameters of datatable in tabletab can't store in session

Status in OpenStack Dashboard (Horizon):
  Invalid

Bug description:
  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?

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