378 lines
13 KiB
Python
378 lines
13 KiB
Python
# Copyright (c) 2013, Web Notes Technologies Pvt. Ltd. and Contributors
|
|
# License: GNU General Public License v3. See license.txt
|
|
from __future__ import unicode_literals
|
|
|
|
import frappe
|
|
from frappe import _
|
|
from frappe.utils import cint, flt, cstr, now
|
|
from erpnext.stock.utils import get_valuation_method
|
|
import json
|
|
|
|
# future reposting
|
|
class NegativeStockError(frappe.ValidationError): pass
|
|
|
|
_exceptions = frappe.local('stockledger_exceptions')
|
|
# _exceptions = []
|
|
|
|
def make_sl_entries(sl_entries, is_amended=None, allow_negative_stock=False):
|
|
if sl_entries:
|
|
from erpnext.stock.utils import update_bin
|
|
|
|
cancel = True if sl_entries[0].get("is_cancelled") == "Yes" else False
|
|
if cancel:
|
|
set_as_cancel(sl_entries[0].get('voucher_no'), sl_entries[0].get('voucher_type'))
|
|
|
|
for sle in sl_entries:
|
|
sle_id = None
|
|
if sle.get('is_cancelled') == 'Yes':
|
|
sle['actual_qty'] = -flt(sle['actual_qty'])
|
|
|
|
if sle.get("actual_qty") or sle.get("voucher_type")=="Stock Reconciliation":
|
|
sle_id = make_entry(sle, allow_negative_stock)
|
|
|
|
args = sle.copy()
|
|
args.update({
|
|
"sle_id": sle_id,
|
|
"is_amended": is_amended
|
|
})
|
|
update_bin(args, allow_negative_stock)
|
|
|
|
if cancel:
|
|
delete_cancelled_entry(sl_entries[0].get('voucher_type'), sl_entries[0].get('voucher_no'))
|
|
|
|
def set_as_cancel(voucher_type, voucher_no):
|
|
frappe.db.sql("""update `tabStock Ledger Entry` set is_cancelled='Yes',
|
|
modified=%s, modified_by=%s
|
|
where voucher_no=%s and voucher_type=%s""",
|
|
(now(), frappe.session.user, voucher_type, voucher_no))
|
|
|
|
def make_entry(args, allow_negative_stock=False):
|
|
args.update({"doctype": "Stock Ledger Entry"})
|
|
sle = frappe.get_doc(args)
|
|
sle.flags.ignore_permissions = 1
|
|
sle.allow_negative_stock=allow_negative_stock
|
|
sle.insert()
|
|
sle.submit()
|
|
return sle.name
|
|
|
|
def delete_cancelled_entry(voucher_type, voucher_no):
|
|
frappe.db.sql("""delete from `tabStock Ledger Entry`
|
|
where voucher_type=%s and voucher_no=%s""", (voucher_type, voucher_no))
|
|
|
|
class update_entries_after(object):
|
|
"""
|
|
update valution rate and qty after transaction
|
|
from the current time-bucket onwards
|
|
|
|
:param args: args as dict
|
|
|
|
args = {
|
|
"item_code": "ABC",
|
|
"warehouse": "XYZ",
|
|
"posting_date": "2012-12-12",
|
|
"posting_time": "12:00"
|
|
}
|
|
"""
|
|
def __init__(self, args, allow_zero_rate=False, allow_negative_stock=None, verbose=1):
|
|
from frappe.model.meta import get_field_precision
|
|
|
|
self.exceptions = []
|
|
self.verbose = verbose
|
|
self.allow_zero_rate = allow_zero_rate
|
|
self.allow_negative_stock = allow_negative_stock
|
|
|
|
if self.allow_negative_stock==None:
|
|
self.allow_negative_stock = cint(frappe.db.get_single_value("Stock Settings",
|
|
"allow_negative_stock"))
|
|
|
|
self.args = args
|
|
for key, value in args.iteritems():
|
|
setattr(self, key, value)
|
|
|
|
self.previous_sle = self.get_sle_before_datetime()
|
|
self.previous_sle = self.previous_sle[0] if self.previous_sle else frappe._dict()
|
|
|
|
for key in ("qty_after_transaction", "valuation_rate", "stock_value"):
|
|
setattr(self, key, flt(self.previous_sle.get(key)))
|
|
|
|
self.company = frappe.db.get_value("Warehouse", self.warehouse, "company")
|
|
self.precision = get_field_precision(frappe.get_meta("Stock Ledger Entry").get_field("stock_value"),
|
|
currency=frappe.db.get_value("Company", self.company, "default_currency"))
|
|
|
|
self.prev_stock_value = self.previous_sle.stock_value or 0.0
|
|
self.stock_queue = json.loads(self.previous_sle.stock_queue or "[]")
|
|
self.valuation_method = get_valuation_method(self.item_code)
|
|
self.stock_value_difference = 0.0
|
|
self.build()
|
|
|
|
def build(self):
|
|
entries_to_fix = self.get_sle_after_datetime()
|
|
|
|
for sle in entries_to_fix:
|
|
self.process_sle(sle)
|
|
|
|
if self.exceptions:
|
|
self.raise_exceptions()
|
|
|
|
self.update_bin()
|
|
|
|
def update_bin(self):
|
|
# update bin
|
|
bin_name = frappe.db.get_value("Bin", {
|
|
"item_code": self.item_code,
|
|
"warehouse": self.warehouse
|
|
})
|
|
|
|
if not bin_name:
|
|
bin_doc = frappe.get_doc({
|
|
"doctype": "Bin",
|
|
"item_code": self.item_code,
|
|
"warehouse": self.warehouse
|
|
})
|
|
bin_doc.insert(ignore_permissions=True)
|
|
else:
|
|
bin_doc = frappe.get_doc("Bin", bin_name)
|
|
|
|
bin_doc.update({
|
|
"valuation_rate": self.valuation_rate,
|
|
"actual_qty": self.qty_after_transaction,
|
|
"stock_value": self.stock_value
|
|
})
|
|
bin_doc.save(ignore_permissions=True)
|
|
|
|
def process_sle(self, sle):
|
|
if sle.serial_no or not cint(self.allow_negative_stock):
|
|
# validate negative stock for serialized items, fifo valuation
|
|
# or when negative stock is not allowed for moving average
|
|
if not self.validate_negative_stock(sle):
|
|
self.qty_after_transaction += flt(sle.actual_qty)
|
|
return
|
|
|
|
if sle.serial_no:
|
|
self.valuation_rate = self.get_serialized_values(sle)
|
|
self.qty_after_transaction += flt(sle.actual_qty)
|
|
self.stock_value = flt(self.qty_after_transaction) * flt(self.valuation_rate)
|
|
else:
|
|
if sle.voucher_type=="Stock Reconciliation":
|
|
# assert
|
|
self.valuation_rate = sle.valuation_rate
|
|
self.qty_after_transaction = sle.qty_after_transaction
|
|
self.stock_queue = [[self.qty_after_transaction, self.valuation_rate]]
|
|
self.stock_value = flt(self.qty_after_transaction) * flt(self.valuation_rate)
|
|
else:
|
|
if self.valuation_method == "Moving Average":
|
|
self.get_moving_average_values(sle)
|
|
self.qty_after_transaction += flt(sle.actual_qty)
|
|
self.stock_value = flt(self.qty_after_transaction) * flt(self.valuation_rate)
|
|
else:
|
|
self.get_fifo_values(sle)
|
|
self.qty_after_transaction += flt(sle.actual_qty)
|
|
self.stock_value = sum((flt(batch[0]) * flt(batch[1]) for batch in self.stock_queue))
|
|
|
|
|
|
# rounding as per precision
|
|
self.stock_value = flt(self.stock_value, self.precision)
|
|
|
|
stock_value_difference = self.stock_value - self.prev_stock_value
|
|
self.prev_stock_value = self.stock_value
|
|
|
|
# update current sle
|
|
sle.qty_after_transaction = self.qty_after_transaction
|
|
sle.valuation_rate = self.valuation_rate
|
|
sle.stock_queue = json.dumps(self.stock_queue)
|
|
sle.stock_value_difference = stock_value_difference
|
|
sle.doctype="Stock Ledger Entry"
|
|
frappe.get_doc(sle).db_update()
|
|
|
|
def validate_negative_stock(self, sle):
|
|
"""
|
|
validate negative stock for entries current datetime onwards
|
|
will not consider cancelled entries
|
|
"""
|
|
diff = self.qty_after_transaction + flt(sle.actual_qty)
|
|
|
|
if diff < 0 and abs(diff) > 0.0001:
|
|
# negative stock!
|
|
exc = sle.copy().update({"diff": diff})
|
|
self.exceptions.append(exc)
|
|
return False
|
|
else:
|
|
return True
|
|
|
|
def get_serialized_values(self, sle):
|
|
incoming_rate = flt(sle.incoming_rate)
|
|
actual_qty = flt(sle.actual_qty)
|
|
serial_no = cstr(sle.serial_no).split("\n")
|
|
|
|
if incoming_rate < 0:
|
|
# wrong incoming rate
|
|
incoming_rate = self.valuation_rate
|
|
elif incoming_rate == 0 or flt(sle.actual_qty) < 0:
|
|
# In case of delivery/stock issue, get average purchase rate
|
|
# of serial nos of current entry
|
|
incoming_rate = flt(frappe.db.sql("""select avg(ifnull(purchase_rate, 0))
|
|
from `tabSerial No` where name in (%s)""" % (", ".join(["%s"]*len(serial_no))),
|
|
tuple(serial_no))[0][0])
|
|
|
|
if incoming_rate and not self.valuation_rate:
|
|
self.valuation_rate = incoming_rate
|
|
else:
|
|
new_stock_qty = self.qty_after_transaction + actual_qty
|
|
if new_stock_qty > 0:
|
|
new_stock_value = self.qty_after_transaction * self.valuation_rate + actual_qty * incoming_rate
|
|
if new_stock_value > 0:
|
|
# calculate new valuation rate only if stock value is positive
|
|
# else it remains the same as that of previous entry
|
|
self.valuation_rate = new_stock_value / new_stock_qty
|
|
|
|
def get_moving_average_values(self, sle):
|
|
incoming_rate = flt(sle.incoming_rate)
|
|
actual_qty = flt(sle.actual_qty)
|
|
|
|
if flt(sle.actual_qty) > 0:
|
|
if self.qty_after_transaction < 0 and not self.valuation_rate:
|
|
# if negative stock, take current valuation rate as incoming rate
|
|
self.valuation_rate = incoming_rate
|
|
|
|
new_stock_qty = abs(self.qty_after_transaction) + actual_qty
|
|
new_stock_value = (abs(self.qty_after_transaction) * self.valuation_rate) + (actual_qty * incoming_rate)
|
|
|
|
if new_stock_qty:
|
|
self.valuation_rate = new_stock_value / flt(new_stock_qty)
|
|
elif not self.valuation_rate and self.qty_after_transaction <= 0:
|
|
valuation_rate = get_valuation_rate(sle.item_code, sle.warehouse, self.allow_zero_rate)
|
|
|
|
return abs(flt(valuation_rate))
|
|
|
|
def get_fifo_values(self, sle):
|
|
incoming_rate = flt(sle.incoming_rate)
|
|
actual_qty = flt(sle.actual_qty)
|
|
|
|
if actual_qty > 0:
|
|
if not self.stock_queue:
|
|
self.stock_queue.append([0, 0])
|
|
|
|
if self.stock_queue[-1][0] > 0:
|
|
self.stock_queue.append([actual_qty, incoming_rate])
|
|
else:
|
|
qty = self.stock_queue[-1][0] + actual_qty
|
|
if qty == 0:
|
|
self.stock_queue.pop(-1)
|
|
else:
|
|
self.stock_queue[-1] = [qty, incoming_rate]
|
|
else:
|
|
qty_to_pop = abs(actual_qty)
|
|
while qty_to_pop:
|
|
if not self.stock_queue:
|
|
if self.qty_after_transaction > 0:
|
|
_rate = get_valuation_rate(sle.item_code, sle.warehouse, self.allow_zero_rate)
|
|
else:
|
|
_rate = 0
|
|
self.stock_queue.append([0, _rate])
|
|
|
|
batch = self.stock_queue[0]
|
|
|
|
if qty_to_pop >= batch[0]:
|
|
# consume current batch
|
|
qty_to_pop = qty_to_pop - batch[0]
|
|
self.stock_queue.pop(0)
|
|
if not self.stock_queue and qty_to_pop:
|
|
# stock finished, qty still remains to be withdrawn
|
|
# negative stock, keep in as a negative batch
|
|
self.stock_queue.append([-qty_to_pop, batch[1]])
|
|
break
|
|
|
|
else:
|
|
# qty found in current batch
|
|
# consume it and exit
|
|
batch[0] = batch[0] - qty_to_pop
|
|
qty_to_pop = 0
|
|
|
|
stock_value = sum((flt(batch[0]) * flt(batch[1]) for batch in self.stock_queue))
|
|
stock_qty = sum((flt(batch[0]) for batch in self.stock_queue))
|
|
|
|
self.valuation_rate = (stock_value / flt(stock_qty)) if stock_qty else 0
|
|
|
|
def get_sle_before_datetime(self):
|
|
"""get previous stock ledger entry before current time-bucket"""
|
|
return get_stock_ledger_entries(self.args, "<", "desc", "limit 1", for_update=False)
|
|
|
|
def get_sle_after_datetime(self):
|
|
"""get Stock Ledger Entries after a particular datetime, for reposting"""
|
|
return get_stock_ledger_entries(self.previous_sle or self.args, ">", "asc", for_update=True)
|
|
|
|
def raise_exceptions(self):
|
|
deficiency = min(e["diff"] for e in self.exceptions)
|
|
msg = _("Negative Stock Error ({6}) for Item {0} in Warehouse {1} on {2} {3} in {4} {5}").format(self.item_code,
|
|
self.warehouse, self.exceptions[0]["posting_date"], self.exceptions[0]["posting_time"],
|
|
_(self.exceptions[0]["voucher_type"]), self.exceptions[0]["voucher_no"], deficiency)
|
|
if self.verbose:
|
|
frappe.throw(msg, NegativeStockError)
|
|
else:
|
|
raise NegativeStockError, msg
|
|
|
|
def get_previous_sle(args, for_update=False):
|
|
"""
|
|
get the last sle on or before the current time-bucket,
|
|
to get actual qty before transaction, this function
|
|
is called from various transaction like stock entry, reco etc
|
|
|
|
args = {
|
|
"item_code": "ABC",
|
|
"warehouse": "XYZ",
|
|
"posting_date": "2012-12-12",
|
|
"posting_time": "12:00",
|
|
"sle": "name of reference Stock Ledger Entry"
|
|
}
|
|
"""
|
|
args["name"] = args.get("sle", None) or ""
|
|
sle = get_stock_ledger_entries(args, "<=", "desc", "limit 1", for_update=for_update)
|
|
return sle and sle[0] or {}
|
|
|
|
def get_stock_ledger_entries(previous_sle, operator=None, order="desc", limit=None, for_update=False):
|
|
"""get stock ledger entries filtered by specific posting datetime conditions"""
|
|
conditions = "timestamp(posting_date, posting_time) {0} timestamp(%(posting_date)s, %(posting_time)s)".format(operator)
|
|
if not previous_sle.get("posting_date"):
|
|
previous_sle["posting_date"] = "1900-01-01"
|
|
if not previous_sle.get("posting_time"):
|
|
previous_sle["posting_time"] = "00:00"
|
|
|
|
if operator in (">", "<=") and previous_sle.get("name"):
|
|
conditions += " and name!=%(name)s"
|
|
|
|
return frappe.db.sql("""select *, timestamp(posting_date, posting_time) as "timestamp" from `tabStock Ledger Entry`
|
|
where item_code = %%(item_code)s
|
|
and warehouse = %%(warehouse)s
|
|
and ifnull(is_cancelled, 'No')='No'
|
|
and %(conditions)s
|
|
order by timestamp(posting_date, posting_time) %(order)s, name %(order)s
|
|
%(limit)s %(for_update)s""" % {
|
|
"conditions": conditions,
|
|
"limit": limit or "",
|
|
"for_update": for_update and "for update" or "",
|
|
"order": order
|
|
}, previous_sle, as_dict=1)
|
|
|
|
def get_valuation_rate(item_code, warehouse, allow_zero_rate=False):
|
|
last_valuation_rate = frappe.db.sql("""select valuation_rate
|
|
from `tabStock Ledger Entry`
|
|
where item_code = %s and warehouse = %s
|
|
and ifnull(valuation_rate, 0) > 0
|
|
order by posting_date desc, posting_time desc, name desc limit 1""", (item_code, warehouse))
|
|
|
|
if not last_valuation_rate:
|
|
last_valuation_rate = frappe.db.sql("""select valuation_rate
|
|
from `tabStock Ledger Entry`
|
|
where item_code = %s and ifnull(valuation_rate, 0) > 0
|
|
order by posting_date desc, posting_time desc, name desc limit 1""", item_code)
|
|
|
|
valuation_rate = flt(last_valuation_rate[0][0]) if last_valuation_rate else 0
|
|
|
|
if not valuation_rate:
|
|
valuation_rate = frappe.db.get_value("Item Price", {"item_code": item_code, "buying": 1}, "price_list_rate")
|
|
|
|
if not allow_zero_rate and not valuation_rate and cint(frappe.db.get_value("Accounts Settings", None, "auto_accounting_for_stock")):
|
|
frappe.throw(_("Purchase rate for item: {0} not found, which is required to book accounting entry (expense). Please mention item price against a buying price list.").format(item_code))
|
|
|
|
return valuation_rate
|