105 lines
3.2 KiB
JavaScript
105 lines
3.2 KiB
JavaScript
// 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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erpnext.StockGridReport = wn.views.TreeGridReport.extend({
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get_item_warehouse: function(warehouse, item) {
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if(!this.item_warehouse[item]) this.item_warehouse[item] = {};
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if(!this.item_warehouse[item][warehouse]) this.item_warehouse[item][warehouse] = {
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balance_qty: 0.0, balance_value: 0.0, fifo_stack: []
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};
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return this.item_warehouse[item][warehouse];
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},
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get_value_diff: function(wh, sl, is_fifo) {
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// value
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if(sl.qty > 0) {
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// incoming - rate is given
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var rate = sl.incoming_rate;
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var add_qty = sl.qty;
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if(wh.balance_qty < 0) {
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// negative valuation
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// only add value of quantity if
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// the balance goes above 0
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add_qty = wh.balance_qty + sl.qty;
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if(add_qty < 0) {
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add_qty = 0;
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}
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}
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var value_diff = (rate * add_qty);
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if(add_qty)
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wh.fifo_stack.push([add_qty, sl.incoming_rate, sl.posting_date]);
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} else {
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// outgoing
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if(is_fifo) {
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var value_diff = this.get_fifo_value_diff(wh, sl);
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} else {
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// average rate for weighted average
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var rate = (wh.balance_qty.toFixed(2) == 0.00 ? 0 :
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flt(wh.balance_value) / flt(wh.balance_qty));
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// no change in value if negative qty
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if((wh.balance_qty + sl.qty).toFixed(2) >= 0.00)
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var value_diff = (rate * sl.qty);
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else
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var value_diff = -wh.balance_value;
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}
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}
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// update balance (only needed in case of valuation)
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wh.balance_qty += sl.qty;
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wh.balance_value += value_diff;
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return value_diff;
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},
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get_fifo_value_diff: function(wh, sl) {
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// get exact rate from fifo stack
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var fifo_stack = (wh.fifo_stack || []).reverse();
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var fifo_value_diff = 0.0;
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var qty = -sl.qty;
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for(var i=0, j=fifo_stack.length; i<j; i++) {
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var batch = fifo_stack.pop();
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if(batch[0] >= qty) {
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batch[0] = batch[0] - qty;
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fifo_value_diff += (qty * batch[1]);
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qty = 0.0;
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if(batch[0]) {
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// batch still has qty put it back
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fifo_stack.push(batch);
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}
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// all qty found
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break;
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} else {
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// consume this batch fully
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fifo_value_diff += (batch[0] * batch[1]);
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qty = qty - batch[0];
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}
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}
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if(qty) {
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// msgprint("Negative values not allowed for FIFO valuation!\
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// Item " + sl.item_code.bold() + " on " + dateutil.str_to_user(sl.posting_datetime).bold() +
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// " becomes negative. Values computed will not be accurate.");
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}
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// reset the updated stack
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wh.fifo_stack = fifo_stack.reverse();
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return -fifo_value_diff;
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},
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}); |