def get_data(self, datum, column, row):
        """Fetches the data to be displayed in this cell."""
        table = row.table
        if column.auto == "multi_select":
            data = ""
            if row.can_be_selected(datum):
                widget = ThemableCheckboxInput(check_test=lambda value: False)
                # Convert value to string to avoid accidental type conversion
                data = widget.render('object_ids',
                                     six.text_type(table.get_object_id(datum)),
                                     {'class': 'table-row-multi-select'})
            table._data_cache[column][table.get_object_id(datum)] = data
        elif column.auto == "form_field":
            widget = column.form_field
            if issubclass(widget.__class__, forms.Field):
                widget = widget.widget

            widget_name = "%s__%s" % \
                (column.name,
                 six.text_type(table.get_object_id(datum)))

            # Create local copy of attributes, so it don't change column
            # class form_field_attributes
            form_field_attributes = {}
            form_field_attributes.update(column.form_field_attributes)
            # Adding id of the input so it pairs with label correctly
            form_field_attributes['id'] = widget_name

            if (template.defaultfilters.urlize in column.filters or
                    template.defaultfilters.yesno in column.filters):
                data = widget.render(widget_name,
                                     column.get_raw_data(datum),
                                     form_field_attributes)
            else:
                data = widget.render(widget_name,
                                     column.get_data(datum),
                                     form_field_attributes)
            table._data_cache[column][table.get_object_id(datum)] = data
        elif column.auto == "actions":
            data = table.render_row_actions(datum)
            table._data_cache[column][table.get_object_id(datum)] = data
        else:
            data = column.get_data(datum)
            if column.cell_attributes_getter:
                cell_attributes = column.cell_attributes_getter(data) or {}
                self.attrs.update(cell_attributes)
        return data
Fetches the data to be displayed in this cell.