[16.0] [ADD] report_wkhtmltopdf_paperformat_from_template

[ivantodorovich]

This is a technical module that allows to force a paperformat directly from the report QWeb template definition.

This is useful in situations where the report content is dynamically chosen, depending on some record conditions, and a different paperformat needs to be used for each.

In core, Odoo already allows to overwrite some paperformat values like the margin-top, header-spacing, etc.. through special data-report-* attributes in the root html tag of the report QWeb template. This module extends this feature to allow to overwrite the paperformat itself.

---

In a report QWeb template, set the data_report_paperformat variable to the desired paperformat xmlid.

For example:

    <template id="report_invoice" inherit_id="account.report_invoice">
        <xpath expr="//t[@t-call='web.html_container']" position="before">
            <t t-set="data_report_paperformat">my_module.paperformat_custom</t>
        </xpath>
    </template>