def render_tag(self, context, *tag_args, **tag_kwargs):
        """
        Rendering of the tag. It either assigns the value as variable, or renders it.
        """
        if self.as_var:
            # Assign the value in the parent context
            context[self.as_var] = self.get_value(context, *tag_args, **tag_kwargs)

        return u''