reporting-engine/report_wkhtmltopdf_param/models/report.py

# Copyright 2017 Avoin.Systems
# Copyright 2017 Eficent Business and IT Consulting Services, S.L.
# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).

from odoo import api, models


class IrActionsReport(models.Model):
    _inherit = 'ir.actions.report'

    @api.model
    def _build_wkhtmltopdf_args(
            self,
            paperformat_id,
            landscape,
            specific_paperformat_args=None,
            set_viewport_size=False):
        # noinspection PyUnresolvedReferences,PyProtectedMember
        command_args = super(IrActionsReport, self)._build_wkhtmltopdf_args(
            paperformat_id,
            landscape,
            specific_paperformat_args,
            set_viewport_size
        )

        for param in paperformat_id.custom_params:
            command_args.extend([param.name])
            if param.value:
                command_args.extend([param.value])

        return command_args