class ReportWithFormInitial(ReportView):
    report_title = _("Report With Form Initial")
    report_description = _("Pre-populates the client filter with the first and last client using get_initial(). "
                           "Shows how to set dynamic default filter values based on live data.")
    report_model = SalesTransaction
    date_field = "date"
    group_by = "product"

    columns = [
        "name",
        ComputationField.create(
            method=Sum,
            field="value",
            name="value__sum",
            verbose_name="Total sold $",
            is_summable=True,
        ),
    ]

    def get_initial(self):
        from .models import Client
        initial = super().get_initial()
        initial["client_id"] = [Client.objects.first().pk, Client.objects.last().pk]
        return initial