flectra/addons/sales_discount/models/sale.py

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2018-01-11 06:23:48 +01:00
# Part of Flectra See LICENSE file for full copyright and licensing details.
from flectra import api, fields, models, _
from flectra.tools.misc import formatLang
from flectra.exceptions import Warning
class SaleOrder(models.Model):
_inherit = "sale.order"
@api.multi
@api.depends('discount_amount', 'discount_per',
'amount_untaxed', 'order_line')
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def _get_discount(self):
total_discount = 0.0
for record in self:
for so_line_id in record.order_line:
total_price = \
(so_line_id.product_uom_qty * so_line_id.price_unit)
total_discount += (total_price * so_line_id.discount) / 100
record.discount = record.pricelist_id.currency_id.round(total_discount)
@api.multi
@api.depends('order_line', 'discount_per', 'discount_amount',
'order_line.product_uom_qty', 'order_line.price_unit')
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def _get_total_amount(self):
for order_id in self:
order_id.gross_amount = sum(
[order_id.pricelist_id.currency_id.round(line_id.product_uom_qty *
line_id.price_unit) for line_id in order_id.order_line])
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discount_method = fields.Selection(
[('fixed', 'Fixed'), ('per', 'Percentage')], string="Discount Method")
discount_amount = fields.Float(string="Discount Amount")
discount_per = fields.Float(string="Discount (%)")
discount = fields.Monetary(
string='Discount', store=True, readonly=True, compute='_get_discount',
track_visibility='always')
gross_amount = fields.Float(string="Gross Amount",
compute='_get_total_amount', store=True)
@api.multi
def calculate_discount(self):
self._check_constrains()
for line in self.order_line:
line.write({'discount': 0.0})
# amount_untaxed = self.amount_untaxed
gross_amount = self.gross_amount
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if self.discount_method == 'per':
for line in self.order_line:
line.write({'discount': self.discount_per})
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else:
for line in self.order_line:
discount_value_ratio = \
(self.discount_amount *
line.price_subtotal) / gross_amount
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discount_per_ratio = \
(discount_value_ratio * 100) / line.price_subtotal
line.write({'discount': discount_per_ratio})
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@api.onchange('discount_method')
def onchange_discount_method(self):
self.discount_amount = 0.0
self.discount_per = 0.0
if self.discount_method and not self.order_line:
raise Warning('No Sale Order Line(s) were found!')
@api.constrains('discount_per', 'discount_amount', 'order_line')
def _check_constrains(self):
self.onchange_discount_per()
self.onchange_discount_amount()
@api.multi
def get_maximum_per_amount(self):
sale_dis_config_obj = self.env['sale.discount.config']
max_percentage = 0
max_amount = 0
check_group = False
for groups_id in self.env.user.groups_id:
sale_dis_config_id = \
sale_dis_config_obj.search([('group_id', '=', groups_id.id)])
if sale_dis_config_id:
check_group = True
if sale_dis_config_id.percentage > max_percentage:
max_percentage = sale_dis_config_id.percentage
if sale_dis_config_id.fix_amount > max_amount:
max_amount = sale_dis_config_id.fix_amount
return {'max_percentage': max_percentage,
'max_amount': max_amount, 'check_group': check_group}
@api.onchange('discount_per')
def onchange_discount_per(self):
values = self.get_maximum_per_amount()
if self.discount_method == 'per' and (
self.discount_per > 100 or self.discount_per < 0) and \
values.get('check_group', False):
raise Warning(_("Percentage should be between 0% to 100%"))
if self.discount_per > values.get('max_percentage', False) and \
values.get('check_group', False):
raise Warning(_("You are not allowed to apply Discount Percentage"
" (%s) more than configured Discount Percentage "
"(%s) in configuration setting!") % (
formatLang(self.env, self.discount_per, digits=2),
formatLang(self.env, values['max_percentage'], digits=2)))
config_id = self.env['res.config.settings'].search(
[], order='id desc', limit=1)
if config_id and config_id.global_discount_apply:
if config_id.global_discount_percentage < self.discount_per:
raise Warning(_("You are not allowed to apply Discount "
"Percentage (%s) more than configured "
"Discount Percentage (%s) in configuration "
"setting!") % (
formatLang(self.env, self.discount_per, digits=2),
formatLang(self.env, config_id.global_discount_percentage,
digits=2)))
@api.onchange('discount_amount')
def onchange_discount_amount(self):
values = self.get_maximum_per_amount()
if self.discount < 0:
raise Warning(_("Discount should be less than Gross Amount"))
discount = self.discount or self.discount_amount
if discount > self.gross_amount:
raise Warning(_("Discount (%s) should be less than "
"Gross Amount (%s).") % (
formatLang(self.env, discount, digits=2),
formatLang(self.env, self.gross_amount, digits=2)))
if self.discount_amount > values.get('max_amount', False) \
and values.get('check_group', False):
raise Warning(_("You're not allowed to apply Discount Amount "
"(%s) more than configured amount (%s) in "
"configuration setting!") % (
formatLang(self.env, self.discount_amount, digits=2),
formatLang(self.env, values['max_amount'], digits=2)))
config_id = self.env['res.config.settings'].search(
[], order='id desc', limit=1)
if config_id and config_id.global_discount_apply:
if config_id.global_discount_fix_amount < self.discount_amount:
raise Warning(_("You're not allowed to apply Discount "
"Amount (%s) more than configured amount "
"(%s) in configuration setting!") % (
formatLang(self.env, self.discount_amount, digits=2),
formatLang(self.env, config_id.global_discount_fix_amount,
digits=2)))
@api.multi
def _prepare_invoice(self):
invoice_vals = super(SaleOrder, self)._prepare_invoice()
invoice_vals.update({
'discount_method': self.discount_method,
'discount_amount': self.discount_amount,
'discount_per': self.discount_per,
'discount': self.discount,
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})
return invoice_vals