invoice report - display discount in Line invoice - Odoo 12 - Qweb - postgresql

Question

I am making a report for the invoice line, I have purchased a module in the third-party odoo store and it performs its function well.
But I can't see the discount on the invoice line.
I think this is because the module prevents me, but I already have no developer support.
What I need is that the discount (price list) can be seen on the invoice line.
What table or what element of the invoice line discount?
I leave you the code that I have in the report
''''
<tbody class="invoice_tbody">
<tr t-foreach="invoice_lines[0]" t-as="line">
<td><b><span t-esc="line['client_ref']"/></b>
<span t-esc="line['description']"/></td>
<td class="text-right">
<span t-esc="line['qty']"/>
</td>
<td class="text-right">
<span t-esc="line['price_unit']"/>
</td>
<td t-if="display_discount" class="text-right">
</td>
<td class="text-right" id="subtotal">
<t t-if="line['price_subtotal']">
<span t-esc = "line ['price_subtotal']" t-options = "{& quot; widget & quot ;: & quot; monetario & quot ;, & quot; display_currency & quot ;: o.currency_id}" /> </t>
</td>
</tr>
<tr t-foreach = "range (max (5-len (o.invoice_line_ids), 0))" t-as = "l">
<td t-translation = "off"> & amp; nbsp; </td>
<td class = "hidden" />
<td />
<td />
<td t-if = "display_discount" />
<td />
<td />
</tr>
</tbody>
</t>
'''

Answer 1

Yes, this parameter is in the report
"view / report_invoice_document"
But the report that I try to modify is this
report_invoice_document_inherit
<?xml version="1.0"?>
<data inherit_id="account.report_invoice_document">
<xpath expr="//table[#name='invoice_line_table']/tbody" position="replace">
<t t-if="res_company.is_group_by_so">
<t t-set="invoice_lines" t-value="o.get_invoice_lines()"/>
<tbody class="invoice_tbody">
<tr t-foreach="invoice_lines[0]" t-as="line">
<td><b><span t-esc="line['client_ref']"/></b>
<span t-esc="line['description']"/></td>
<!-- <td class="hidden"><span t-esc="line['client_ref']"/></td> -->
<td class="text-right">
<span t-esc="line['qty']"/>
<!-- <span t-field="l.uom_id" groups="product.group_uom"/> -->
</td>
<td class="text-right">
<span t-esc="line['price_unit']"/>
</td>
</td>
<td t-if="display_discount" class="text-right">
<!-- <span t-esc="line['price_unit']"/> -->
</td>
<td class="text-right" id="subtotal">
<t t-if="line['price_subtotal']">
<span t-esc="line['price_subtotal']" t-options="{"widget": "monetary", "display_currency": o.currency_id}"/></t>
</td>
</tr>
<tr t-foreach="range(max(5-len(o.invoice_line_ids),0))" t-as="l">
<td t-translation="off">&nbsp;</td>
<td class="hidden"/>
<td/>
<td/>
<td t-if="display_discount"/>
<td/>
<td/>
</tr>
</tbody>
</t>
<t t-else="">
<tbody class="invoice_tbody">
<tr t-foreach="o.invoice_line_ids" t-as="l">
<td><span t-field="l.name"/></td>
<td class="hidden"><span t-field="l.origin"/></td>
<td class="text-right">
<span t-field="l.quantity"/>
<span t-field="l.uom_id" groups="product.group_uom"/>
</td>
<td class="text-right">
<span t-field="l.price_unit"/>
</td>
<td t-if="display_discount" class="text-right">
<span t-field="l.discount"/>
</td>
<td class="text-right">
<span t-esc="', '.join(map(lambda x: (x.description or x.name), l.invoice_line_tax_ids))"/>
</td>
<td class="text-right" id="subtotal">
<span t-field="l.price_subtotal" t-options="{"widget": "monetary", "display_currency": o.currency_id}"/>
</td>
</tr>
<tr t-foreach="range(max(5-len(o.invoice_line_ids),0))" t-as="l">
<td t-translation="off">&nbsp;</td>
<td class="hidden"/>
<td/>
<td/>
<td t-if="display_discount"/>
<td/>
<td/>
</tr>
</tbody>
</t>
</xpath>
</data>
I have tried to modify the second report, and put and have looked at the python code in case something
invoice_report_grouped_by \ report \ account_invoice.py
# -*- coding: utf-8 -*-
from odoo import api, models
from datetime import datetime
class AccountInvoice(models.Model):
_inherit = "account.invoice"
def get_notation_amt(self, amt):
'''This method help us to return the value of the product pricing'''
amount = str(amt).split('.')
if len(amount) == 2:
amount = amount[0] + "," + amount[1]
return amount
return amt
#api.multi
def get_product_invoice_lines(self, client_ref=False):
'''This method helps to get the data for the following Invoice Line.'''
product_invoices = []
client_order_ref = []
for line in self.invoice_line_ids:
sale_line = (False, line)
if line.sale_line_ids:
sale_line = (line.sale_line_ids[0].order_id, line)
client_order_ref.append(sale_line)
if client_order_ref:
for ref in client_order_ref:
if (client_ref == ref[0]):
product_invoices.append({'price_subtotal': ref[1].price_unit * ref[1].quantity,
'default_code': ref[1].product_id.default_code,
'client_ref': False,
'discount': ref[1].discount,
'taxes': ",".join(map(lambda x: (x.description or x.name), ref[1].invoice_line_tax_ids)),
'description': ref[1].name,
'qty': self.get_notation_amt(ref[1].quantity),
'price_unit': self.get_notation_amt("{0:.3f}".format(ref[1].price_unit)),
})
else:
for line in self.invoice_line_ids:
product_invoices.append({'price_subtotal': line.price_unit * line.quantity,
'default_code': line.product_id.default_code,
'client_ref': False,
'discount': line.discount,
'taxes': ",".join(map(lambda x: (x.description or x.name), ref[1].invoice_line_tax_ids)),
'description': line.name,
'qty': self.get_notation_amt(line.quantity),
'price_unit': self.get_notation_amt("{0:.3f}".format(line.price_unit)),
})
return product_invoices
#api.multi
def get_invoice_lines(self):
'''This method help to get the invoice line group by Sale order'''
vals = []
sale_order_lines = []
false_sale_order_lines = []
for line in self.invoice_line_ids:
sale_line = False
if line.sale_line_ids:
sale_line = line.sale_line_ids[0].order_id
if sale_line:
sale_order_lines.append(sale_line)
else:
false_sale_order_lines.append(sale_line)
sale_order_lines = list(set(sale_order_lines))
false_sale_order_lines = list(set(false_sale_order_lines))
for sale_order in sale_order_lines:
if sale_order and self.origin:
confirmation_date = str(
sale_order.confirmation_date, '%d-%m-%Y %H:%M:%S').strftime('%d/%m/%Y')
client_ref = sale_order.name + ' - ' + confirmation_date
if sale_order.client_order_ref:
client_ref = client_ref + ' - ' + sale_order.client_order_ref
vals.append({'price_subtotal': False, 'default_code': False,
'client_ref': client_ref, 'description': False,
'qty': False, 'price_unit': False, 'taxes': False, 'discount': False})
vals.extend(self.get_product_invoice_lines(client_ref=sale_order))
# for sort false sale order, display manually invoice line at last
for so in false_sale_order_lines:
vals.extend(self.get_product_invoice_lines(client_ref=so))
return [vals, len(vals)]

Answer 2

You can see the default report here:
https://github.com/odoo/odoo/blob/06f9baae968674547cb2592b1c22147bfb2e8ba9/addons/account/views/report_invoice.xml#L49
<t t-set="display_discount" t-value="any([l.discount for l in o.invoice_line_ids])"/>
This means that if any line has a discount, it should display it.
I think there are two options to disable it. One is to remove that line from the report, or the second option is to set display_discount to false.
Knowing the module that breaks your report, the problem should be easy to find.
But the exact reason is hard to tell without seeing your module.