reporting-engine/report_context/models/ir_actions_report.py

# Copyright 2019 Creu Blanca
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
from odoo.tools.safe_eval import safe_eval
from odoo import api, fields, models


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

    context = fields.Char(
        string='Context Value', default={},
        required=True,
        help="Context dictionary as Python expression, empty by default "
             "(Default: {})")

    def _get_context(self):
        self.ensure_one()
        context = self.env['ir.config_parameter'].sudo().get_param(
            'report.default.context', '{}')
        # We must transform it to a dictionary
        context = safe_eval(context or '{}')
        report_context = safe_eval(self.context or '{}')
        context.update(report_context)
        context.update(self.env.context)
        return context

    @api.multi
    def render(self, res_ids, data=None):
        return super(IrActionsReport, self.with_context(
            self._get_context())).render(res_ids, data=data)

    @api.noguess
    def report_action(self, docids, data=None, config=True):
        return super(IrActionsReport, self.with_context(
            self._get_context()
        )).report_action(docids, data=data, config=config)