Add a way to re-use payment slip on a Qweb report

[sebastienhasa]

Actually, PaymentSlip._draw_payment_slip(), in l10n_ch_payment_slip/models/payment_slip.py:828, only return a finished PDF document. This prevent payment slip to be include in a standard Qweb report.

It would be great to add a possibility to use a payment slip on a Qweb report.

[yvaucher]

Have you seen module https://github.com/OCA/l10n-switzerland/tree/12.0/l10n_ch_invoice_with_payment ?

By the way, note that ISR payment slip will be replaced by QR-invoice in may 2020

[sebastienhasa]

@yvaucher: Thanks. :)

After looking at the code of l10n_ch_invoice_with_payment, when you render the report "Invoice with payment slip", the code simply render the invoice and the payment slip, then merge it with merge_pdf_in_memory(). This method is added to the model ir.actions.report at l10n_ch_payment_slip/report/ir_action.py:L151.

So, if someone need to add a payment slip on a Qweb report, he can simply draw inspiration from the code at l10n_ch_invoice_with_payment/models/report.py:L11.

It would by nice to document it, somewhere easy to find. ;)

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