Global / Line Discount for Sale/Purchase/Account - odoo

[Odoo 14 Community Edition]
I need to customize Global and Line Discounts (amount & percentage) into Sale / Purchase / Account.
I have done the Sale and Purchase parts. It is just adding fields and a few logics here and there and send the data to Account (account.move) by prepare_invoice methods.
Now here's the issue I am facing -- The Account. I am having a tremendous confusion of where I should modify. After I tried to understand and tracked the flow of the standard invoicing/billing, I am at lost. There are too many functions/variables for me, who do not understand accounting, to try to get the whole idea out of it.
I did add the discount fields that I need. However, the standard calculation of price / taxes / credit / debit are messed up when I try to inherit some methods that I think I should modify. I ended up having incorrect taxes, unbalanced credit/debit, and incorrect total amount.
I tried editing here and there (by inheriting of course. I can still rollback everything I did).
The point is that I need precise suggestions and/or directions of what functions/methods I should inherit just enough to make discount possible. I have 2 Line Discount fields (amount and percent) and 2 Global Discount (also amount and percent). The calculation between them is not the point of interest here. The only problem at this point is to integrate these fields (from SO, PO, and manually created) into the calculation of everything in Invoicing/Billing.
Here are the fields:
account.move
global_discount_amount = fields.Float(string='Global Discount Amount', compute=compute_global_discount_amount, store=True)
global_discount_percent = fields.Float(string='Global Discount Percent', compute=compute_global_discount_percent, store=True)
account.move.line
discount_line_amount = fields.Float(string='Disc. Line Amount', compute=compute_discount_line_amount, store=True)
discount_line_percent = fields.Float(string='Disc. Line %', compute=compute_discount_line_percent, store=True)
Right now, I am messing with some methods such as: (a few examples)
account.move
_recompute_tax_lines
account.move.line
create
_get_fields_onchange_balance_model
_get_price_total_and_subtotal_model
_onchange_price_subtotal
Most of the modifications are written by copying the whole method from standard into my new model (inherit that standard model) and edit some codes here -- Override the standard code from my understanding.

Function computation/execution either depends on other fields value change or compute every time form/listview load.
Check in your case what is depends on the function compute_global_discount_amount and compute_global_discount_percentage
For better developing/troubleshooting, remove any #depends() fields declaration on the functions. Additionally, remove the store=True attribute temporarily. It will help you to narrow down the issue. And make sure you get the correct numbers.
Once you get it, add back fields depending.
Here is a sample example of a method (Odoo 14 CE) override which will be executed during compute amount.
#api.depends(
'line_ids.matched_debit_ids.debit_move_id.move_id.payment_id.is_matched',
'line_ids.matched_debit_ids.debit_move_id.move_id.line_ids.amount_residual',
'line_ids.matched_debit_ids.debit_move_id.move_id.line_ids.amount_residual_currency',
'line_ids.matched_credit_ids.credit_move_id.move_id.payment_id.is_matched',
'line_ids.matched_credit_ids.credit_move_id.move_id.line_ids.amount_residual',
'line_ids.matched_credit_ids.credit_move_id.move_id.line_ids.amount_residual_currency',
'line_ids.debit',
'line_ids.credit',
'line_ids.currency_id',
'line_ids.amount_currency',
'line_ids.amount_residual',
'line_ids.amount_residual_currency',
'line_ids.payment_id.state',
'line_ids.full_reconcile_id')
def _compute_amount(self):
super()._compute_amount()
for record in self:
record.compute_global_discount_amount()
record.compute_global_discount_percent()
def compute_global_discount_amount(self):
for record in self:
# Execute your logic for compute global_discount_amount
record.global_discount_amount = $$$$

have a look at apply_discount function in an inherited class of sale.order
def apply_discount(self, cr, uid, ids, discount_rate):
cur_obj = self.pool.get('res.currency')
res = {}
line_obj = self.pool.get('sale.order.line')
for order in self.browse(cr, uid, ids, context=None):
for line in order.order_line:
line_obj.write(cr, uid, [line.id], {'discount': discount_rate}, context=None)
return res
A new column was added to the new inherited subclass of sale order
'discount_rate' : fields.float('Discount rate'),
Then in the sale order view (an inherited one) placed the new field discount on the sale.order.view and fired an event on the on_change of the value passing the self value of the field to the on_change event
In this way you can apply discount sequentially to the rows of the order without altering the normal process.

Firstful, please pardon my English. Then let's get into the core, I guess that this is exactly the task that I was assigned. Luckily that I was not alone, I was guided by my so-called senior which showed me the way in order to achieve the Global Discount for Invoice and Bill.
By looking at your methods listing, you were already on the right path!
So now, let me help you further...as much as I can
As in my case, I didn't put any new field regarding the Global Discount in Account Move Line model, even though in Sale Order Line and Purchase Order Line Global Discount fields do exist.
All and all, here are the methods that need to be customized:
_onchange_invoice_line_ids
_compute_amount
_recompute_payment_terms_lines
_recompute_tax_lines
I heavily modified the 3rd and 4th methods. However, I think that I still have some bugs, don't hesitate to tell me.

Related

Odoo create stock.move.line to reserve stock

product_id = 465
location_id =8
product_qty =1
lot_id = 118
env['stock.move.line'].create( {
'company_id':1,
'picking_id':record.id,
'lot_id':lot_id,
'date':record.date,
'location_dest_id':5,
'location_id':location_id ,
'product_uom_qty':product_qty,
'product_uom_id':32,
'product_id':product_id
})
I am trying to create stock move line to programmtically create stock.move.line. However, after using this code, stock move line is created but it is not working normally. The Transfer can't be processed even after pressing validating without any error popping. When cancel is pressed, it say It is not possible to unreserve more products of xxxxx than you have in stock. After some researching, i am not sure if I should update stock.quant to reserve the products. Then I added these two lines of code at the bottom of the code above. However, it leads to error that said 'int' object has no attribute 'categ_id'" while evaluating........ Is my code for reservation of stock wrong or is there other way that can make this works. Thanks
if env['stock.quant']._get_available_quantity(product_id,location_id, lot_id,strict=True)>=1:
env['stock.quant']._update_available_quantity(product_id,location_id, -product_qty, lot_id,package_id=False, owner_id=False)
The _get_available_quantity function will call _gather function which will call the _get_removal_strategy function and if you provide the product_id as an integer, it will fail to get the removal_strategy_id from the product categ_id
You may notice that the _get_available_quantity function expects a recordset because of the way Odoo defines the variable rounding.

Cannot create unbalanced journal entry. Ids: Differences debit - credit Error when trying to create an invoice line

I'm trying to create an invoice line using the Web APIs and XML-RPC (python). I receive this error while creating it.
xmlrpc.client.Fault: <Fault 2: 'Cannot create unbalanced journal entry. Ids: [12083]\nDifferences debit - credit: [-2629.33]'>
I'm creating the invoice line as follows:
inv_line_id = models.execute_kw(
db, uid, password,
'account.move.line',
'create'[
{'move_id':invoice_id,
'product_id':product_id[0]['id'],
'price_unit':product_id[0]['list_price'],
'quantity':sale_line_id[0]['product_uom_qty'],
'account_id':account_id[0]['property_account_income_categ_id'][0]
}
]
)
If i dont add the 'price_unit' the invoice line is being created normally but without a price.
Anyone knows how to fix this ? Thanks in advance
If you are in the same version of me (V13) or if the code is the same in your version. You could pass a value in the context to don't check the balanced.
'check_move_validity' = False
Find in the file account/models/account_move.py . Line 1721 in method write
# Ensure the move is still well balanced.
if 'line_ids' in vals:
if self._context.get('check_move_validity', True):
self._check_balanced()
self.update_lines_tax_exigibility()
During the create or write of an account.move with only invoice_line_ids set and not line_ids, the _move_autocomplete_invoice_lines_create or _move_autocomplete_invoice_lines_write method is called to auto compute accounting lines of the invoice. In that case, accounts will be retrieved and taxes, cash rounding, and payment terms will be computed. In the end, the values will contain all accounting lines in line_ids and the moves should be balanced.
Latest version of Odoo 13 dated December 10, 2021.
Edit file: /path_of_odoo/addons/account/models/account_move.py
Example:
vim /odoo/addons/account/models/account_move.py
Modify function named _check_balanced and comment line 1582 and add new line whit return
Example:
############################### Before ##################################
############################### A F T E R ###############################

How to reflect product price and quantity changes on journal entries of an invoice

I create a wizard that change price and quantity for each product but the amount_untaxed, tax_amount and total amount unchanged and journal entries are unbalanced. how to resolve that?
You should call _onchange_price_subtotal() on every changed invoice line (model account.move.line) to trigger the recomputation. The recomputation is only implemented for changes in the view, that's why it's isn't triggered when using a wizard. But the implementation can be used in the wizard, too, without any problems.
strong text_onchange_price_subtotal doesn't work. But
current_invoice_lines = rec.order_id.line_ids.filtered(lambda line: not line.exclude_from_invoice_tab)
others_lines = rec.order_id.line_ids - current_invoice_lines
if others_lines and current_invoice_lines - rec.order_id.invoice_line_ids:
others_lines[0].recompute_tax_line = True
rec.order_id.line_ids = others_lines + rec.order_id.invoice_line_ids
rec.order_id._onchange_recompute_dynamic_lines()
After adding the above code on account.move ... journal entries are balanced but tax_amount still unchanged?

How can I set the pricelist discount to a product when I create a sale order line? In Odoo 9

I have a function who retrieves sale orders from an external server.
Then, I insert each sale order with order lines in the odoo database.
Everything is inserted fine, except the discount.
I have the pricelist in the sale order, with a discount (for example, a discount of 10% in every product), but in all the sale order lines the discount is 0%.
If I add a sale order line manually, the discount appears correctly (10%).
This is my code:
vals = {}
vals['order_id'] = downloaded_sale_order_id
vals['product_id'] = downloaded_product_id
vals['product_uom'] = downloaded_product_uom
new_line_id = self.env['sale.order.line'].create(vals)
I have entered in debug mode and realized that if I call some of these functions after the creation, the discount is applied
Option 1:
new_line_id.product_id_change()
Option 2:
new_line_id.product_uom_change()
But... why they are not called when I launch the create order?
Am I missing something in the code?
You have following options for set discount inside the sale order line while creating it from external server source.
1) Just set discount as like other parameter like uom, product, price etc from the source data of external server if you got discount value from their.
2) You have to call product or uom onchange method to set the discount based on the onchange calling and this is the default and safe method to set most of the data according to the onchange. It will not miss any special fields which are inside any customization with onchange method. I specially recommend this method to use if any discount data is not coming from external server source.
3) You can manage manually calculation of discount based on the external server source like price and qty etc. And set it inside sale order line.
I hope this is very helpful to you. Do not hesitate to ask any thing if not clear.

Adding more information to Magento packingslip or Invoice PDF

How can i add additional information to the Magento Packingslip PDF. I am using integrated label paper, so i would like to add repeat the customers delivery address at the footer and also, some details like total quantity of items in the order and the cost of the items in the order. I am currently modifying local files in: Mage/Sales/Model/Order/Pdf/ but I have only managed to change to font.
EDIT:
Okay, i have made good progress and added most of the information i need, however, i have now stumbled across a problem.. I would like to get the total weight of all items in each order and Quantity.
I am using this code in the shipment.php:
Under the foreach (This is useful in case an order has a split delivery - as you can have one order with multiple "shipments" So this is why I have the code after here:
foreach ($shipment->getAllItems() as $item){
if ($item->getOrderItem()->getParentItem()) {
continue;
...
then I have this further down:
$shippingweight=0;
$shippingweight= $item->getWeight()*$item->getQty();
$page->drawText($shippingweight . Mage::helper('sales'), $x, $y, 'UTF-8');
This is great for Row totals. But not for the whole shipment. What I need to do is have this bit of code "added up" for each item in the shipment to create the total Weight of the whole shipment. It is very important that I only have the total of the shipment - not the order as I will be splitting shipments.
Almost at the end of getPdf(...) in Mage_Sales_Model_Order_Pdf_Shipment you will find the code that inserts new pages (lines 93-94 in 1.5.0.1)
if($this->y<15)
$page = $this->newPage(....)
happening in a for-loop.
You can change the logic here to make it change page earlier to make room for your extra information and then add it before the page shift. You should also place code after the for-block if you want it to appear on the last page as well.
Note: You should not change files in app/code/code/Mage directly. Instead, you should place your changed files under app/code/local/Mage using the same folder structure. That way your changes won't accidently get overwritten in an upgrade.
This should get you the total number of items in your order (there might be a faster way but don't know it off the top of my head):
$quote = Mage::getModel('sales/quote')->load($order->getQuoteId());
$itemsCount = $quote->getItemsSummaryQty();
For invoice PDF
at app/code/local/Mage/Sales/Model/Order/Pdf/Items/Invoice/Default.php
add this before $lineBlock
$product = Mage::getModel('catalog/product')->loadByAttribute('sku', $this->getSku($item), array('weight'));
$lines[][] = array(
'text' => 'Weight: '. $product->getData('weight')*1 .'Kg/ea. Total: ' .$product->getData('weight')*$item->getQty() . 'Kg',
'feed' => 400
);