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refactored purchase cycle's get item details and update item details functions and started with purchase price list
This commit is contained in:
Anand Doshi
178
buying/utils.py
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178
buying/utils.py
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# ERPNext - web based ERP (http://erpnext.com)
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# Copyright (C) 2012 Web Notes Technologies Pvt Ltd
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from __future__ import unicode_literals
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import webnotes
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from webnotes.utils import getdate, flt, add_days
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import json
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@webnotes.whitelist()
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def get_item_details(args):
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"""
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args = {
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"doctype": "",
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"docname": "",
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"item_code": "",
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"warehouse": None,
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"supplier": None,
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"transaction_date": None,
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"conversion_rate": 1.0
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}
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"""
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if isinstance(args, basestring):
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args = json.loads(args)
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args = webnotes._dict(args)
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item_wrapper = webnotes.model_wrapper("Item", args.item_code)
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item = item_wrapper.doc
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from stock.utils import validate_end_of_life
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validate_end_of_life(item.name, item.end_of_life)
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# fetch basic values
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out = webnotes._dict()
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out.update({
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"item_name": item.item_name,
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"item_group": item.item_group,
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"brand": item.brand,
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"description": item.description,
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"qty": 0,
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"stock_uom": item.stock_uom,
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"uom": item.stock_uom,
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"conversion_factor": 1,
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"warehouse": args.warehouse or item.default_warehouse,
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"item_tax_rate": json.dumps(dict(([d.tax_type, d.tax_rate] for d in
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item_wrapper.doclist.get({"parentfield": "ref_rate_details"})))),
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"batch_no": None,
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"expense_head": item.purchase_account,
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"cost_center": item.cost_center
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})
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if args.supplier:
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item_supplier = item_wrapper.doclist.get({"parentfield": "item_supplier_details",
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"supplier": args.supplier})
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if item_supplier:
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out["supplier_part_no"] = item_supplier[0].supplier_part_no
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if out.warehouse:
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out.projected_qty = webnotes.conn.get_value("Bin", {"item_code": item.name,
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"warehouse": out.warehouse}, "projected_qty")
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if args.transaction_date and item.lead_time_days:
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out.schedule_date = out.lead_time_date = add_days(args.transaction_date,
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item.lead_time_days)
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# set zero
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out.purchase_ref_rate = out.discount_rate = out.purchase_rate = \
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out.import_ref_rate = out.import_rate = 0.0
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if args.doctype in ["Purchase Order", "Purchase Invoice", "Purchase Receipt"]:
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# try fetching from price list
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if args.price_list_name:
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rates_as_per_price_list = get_rates_as_per_price_list(args, item_wrapper.doclist)
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if rates_as_per_price_list:
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out.update(rates_as_per_price_list)
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# if not found, fetch from last purchase transaction
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if not out.purchase_rate:
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last_purchase = get_last_purchase_details(item.name, args.docname, args.conversion_rate)
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if last_purchase:
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out.update(last_purchase)
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return out
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def get_rates_as_per_price_list(args, item_doclist=None):
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if not item_doclist:
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item_doclist = webnotes.model_wrapper("Item", args.item_code).doclist
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result = item_doclist.get({"parentfield": "ref_rate_details",
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"price_list_name": args.price_list_name, "ref_currency": args.price_list_currency})
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if result:
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purchase_ref_rate = flt(result[0].ref_rate) * flt(args.plc_conversion_rate)
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conversion_rate = flt(args.conversion_rate) or 1.0
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return webnotes._dict({
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"purchase_ref_rate": purchase_ref_rate,
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"purchase_rate": purchase_ref_rate,
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"rate": purchase_ref_rate,
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"discount_rate": 0,
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"import_ref_rate": purchase_ref_rate / conversion_rate,
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"import_rate": purchase_ref_rate / conversion_rate
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})
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else:
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return webnotes._dict()
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def get_last_purchase_details(item_code, doc_name, conversion_rate=1.0):
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"""returns last purchase details in stock uom"""
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# get last purchase order item details
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last_purchase_order = webnotes.conn.sql("""\
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select po.name, po.transaction_date, po.conversion_rate,
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po_item.conversion_factor, po_item.purchase_ref_rate,
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po_item.discount_rate, po_item.purchase_rate
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from `tabPurchase Order` po, `tabPurchase Order Item` po_item
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where po.docstatus = 1 and po_item.item_code = %s and po.name != %s and
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po.name = po_item.parent
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order by po.transaction_date desc, po.name desc
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limit 1""", (item_code, doc_name), as_dict=1)
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# get last purchase receipt item details
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last_purchase_receipt = webnotes.conn.sql("""\
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select pr.name, pr.posting_date, pr.posting_time, pr.conversion_rate,
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pr_item.conversion_factor, pr_item.purchase_ref_rate, pr_item.discount_rate,
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pr_item.purchase_rate
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from `tabPurchase Receipt` pr, `tabPurchase Receipt Item` pr_item
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where pr.docstatus = 1 and pr_item.item_code = %s and pr.name != %s and
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pr.name = pr_item.parent
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order by pr.posting_date desc, pr.posting_time desc, pr.name desc
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limit 1""", (item_code, doc_name), as_dict=1)
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purchase_order_date = getdate(last_purchase_order and last_purchase_order[0].transaction_date \
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or "1900-01-01")
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purchase_receipt_date = getdate(last_purchase_receipt and \
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last_purchase_receipt[0].posting_date or "1900-01-01")
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if (purchase_order_date > purchase_receipt_date) or \
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(last_purchase_order and not last_purchase_receipt):
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# use purchase order
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last_purchase = last_purchase_order[0]
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purchase_date = purchase_order_date
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elif (purchase_receipt_date > purchase_order_date) or \
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(last_purchase_receipt and not last_purchase_order):
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# use purchase receipt
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last_purchase = last_purchase_receipt[0]
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purchase_date = purchase_receipt_date
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else:
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return webnotes._dict()
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conversion_factor = flt(last_purchase.conversion_factor)
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out = webnotes._dict({
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"purchase_ref_rate": flt(last_purchase.purchase_ref_rate) / conversion_factor,
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"purchase_rate": flt(last_purchase.purchase_rate) / conversion_factor,
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"discount_rate": flt(last_purchase.discount_rate),
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"purchase_date": purchase_date
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})
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conversion_rate = flt(conversion_rate) or 1.0
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out.update({
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"import_ref_rate": out.purchase_ref_rate / conversion_rate,
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"import_rate": out.purchase_rate / conversion_rate,
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"rate": out.purchase_rate
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})
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return out
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