sales/includes/cart_class.inc

   1 <?php
   2 /**********************************************************************
   3     Copyright (C) FrontAccounting, LLC.
   4         Released under the terms of the GNU General Public License, GPL,
   5         as published by the Free Software Foundation, either version 3
   6         of the License, or (at your option) any later version.
   7     This program is distributed in the hope that it will be useful,
   8     but WITHOUT ANY WARRANTY; without even the implied warranty of
   9     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  10     See the License here <http://www.gnu.org/licenses/gpl-3.0.html>.
  11 ***********************************************************************/
  12 /* Definition of the cart class
  13 this class can hold all the information for:
  14
  15 i)   a sales order
  16 ii)  an invoice
  17 iii) a credit note
  18 iv)  a delivery note
  19 */
  20
  21 include_once($path_to_root . "/inventory/includes/inventory_db.inc");
  22 include_once($path_to_root . "/taxes/tax_calc.inc");
  23
  24 class cart
  25 {
  26         var $trans_type; // invoice, order, quotation, delivery note ...
  27         var $trans_no = array();// array (num1=>ver1,..) or 0 for new
  28         var $so_type = 0;               // for sales order: simple=0 template=1
  29         var $cart_id;           // used to detect multi-tab edition conflits
  30         var $line_items;  //array of objects of class line_details
  31
  32         var $src_docs = array();        // array of arrays(num1=>ver1,...) or 0 for no src
  33         var $src_date;                  // src document date (for info only)
  34
  35         var $document_date;
  36         var $due_date;
  37         var $sales_type; // set to the customer's sales type
  38         var $sales_type_name; // set to customer's sales type name
  39         var $tax_included;
  40
  41         var $customer_currency; // set to the customer's currency
  42         var $default_discount; // set to the customer's discount %
  43         var $customer_name;
  44         var $customer_id;
  45         var $Branch;
  46         var $email;
  47
  48         var $deliver_to;
  49         var $delivery_address;
  50         var $phone;
  51
  52         var $cust_ref;
  53         var $reference;
  54         var $Comments;
  55         var $Location;
  56         var $location_name;
  57         var $order_no;          // the original order number
  58
  59         var $ship_via;
  60         var $freight_cost = 0;
  61
  62         var $tax_group_id;
  63         var $tax_group_name;
  64         var $tax_group_array = null; // saves db queries
  65         var $price_factor;       // ditto for price calculations
  66
  67         var     $pos;                   // user assigned POS (contains cash accont number/name)
  68         var $cash_discount;     // not used as of FA 2.1
  69         var $dimension_id;
  70         var $dimension2_id;
  71         var $payment;
  72         var $payment_terms; // cached payment terms
  73         var $credit;
  74         var $ex_rate;
  75
  76         //-------------------------------------------------------------------------
  77         //
  78         //  $trans_no==0 => open new/direct document
  79         //  $trans_no!=0 && $prep_child==false => update with parent constarints for reedition
  80         //  $trans_no!=0 && $prep_child==true => prepare for child doc entry
  81         //
  82         function Cart($type, $trans_no=0, $prep_child=false) {
  83                 /*Constructor function initialises a new shopping cart */
  84                 $this->line_items = array();
  85                 $this->sales_type = "";
  86                 if ($type == ST_SALESQUOTE)
  87                         $this->trans_type = $type;
  88                 else
  89                         $this->trans_type = ST_SALESORDER;
  90                 $this->dimension_id = 0;
  91                 $this->dimension2_id = 0;
  92                 $this->pos = get_sales_point(user_pos());
  93                 $this->read($type, $trans_no, $prep_child);
  94                 $this->cart_id = uniqid('');
  95         }
  96
  97         /*
  98                 Optional sorting items by stock_id.
  99         */
 100         function _cmp_lines($a, $b)
 101         {
 102                 return strcmp($a->stock_id, $b->stock_id);
 103         }
 104
 105         /*
 106                 Returns items array optionally sorted by item code.
 107         */
 108         function get_items()
 109         {
 110                 global $sort_sales_items;
 111
 112                 $items = $this->line_items;
 113                 if (@$sort_sales_items)
 114                         uasort($items, array($this, '_cmp_lines'));
 115
 116                 return $items;
 117         }
 118         //
 119         //      Prepare cart to new child document entry, just after initial parent doc read.
 120         //
 121         function prepare_child()
 122         {
 123                 global $Refs;
 124
 125                 $type = get_child_type($this->trans_type);
 126
 127                 $this->trans_type = $type;
 128                 $this->reference = $Refs->get_next($this->trans_type);
 129                 if ($type == ST_CUSTCREDIT)
 130                     $this->src_date = $this->document_date;
 131
 132                 $this->document_date = new_doc_date();
 133
 134                 for($line_no = 0; $line_no < count($this->line_items); $line_no++) {
 135                         $line = &$this->line_items[$line_no];
 136                         $line->src_id = $line->id; // save src line ids for update
 137                         $line->qty_dispatched = $type == ST_CUSTCREDIT ? '0' : $line->quantity - $line->qty_done;
 138                         $line->qty_old = 0;
 139                 }
 140                 unset($line);
 141
 142                 if ($type == ST_CUSTDELIVERY) {
 143                         $this->order_no = key($this->trans_no);
 144                         $cust = get_customer($this->customer_id);
 145                         $this->dimension_id = $cust['dimension_id'];
 146                         $this->dimension2_id = $cust['dimension2_id'];
 147                 }
 148                 if ($type == ST_SALESINVOICE) {
 149                         $this->due_date = get_invoice_duedate($this->payment, $this->document_date);
 150                 }
 151
 152                 $this->src_docs = $this->trans_no;
 153                 $this->trans_no = 0;
 154         }
 155
 156         //
 157         //      Prepares transaction for reedition updating with parent transaction data
 158         //
 159         function set_parent_constraints($sodata, $src_no) {
 160
 161                 $srcdetails = get_sales_parent_lines($this->trans_type, $src_no);
 162                 $src_type = get_parent_type($this->trans_type);
 163
 164                 // calculate & save: qtys on other docs and free qtys on src doc
 165                 $line_no = 0; $src_docs = array();
 166                 // Loop speed optimisation below depends on fact
 167                 // that child line_items contains subset of parent lines in _the_same_ order !
 168                 while (($line_no < count($this->line_items)) && ($srcline = db_fetch($srcdetails))) {
 169                         $line = &$this->line_items[$line_no];
 170                         $src_docs[] = $src_type == ST_SALESORDER ?  $srcline['order_no'] : $srcline['debtor_trans_no'];
 171                         while($srcline['id'] != $line->src_id) // Logic : This will increment the line_items array till sales_order line is matched.
 172                         {       // 0002259: Fixes Delivery note bug : Parent constraints not working if sales order line deleted after delivery
 173                         $line_no++;
 174                         $line = &$this->line_items[$line_no];
 175                         }
 176                         if ($srcline['id'] == $line->src_id) {
 177                                 if ($this->trans_type == ST_SALESINVOICE)
 178                                         $line->src_no = $srcline['debtor_trans_no'];
 179                                 $line->qty_old = $line->qty_dispatched = $line->quantity;
 180                                 $line->quantity += $srcline['quantity'] -
 181                                         ($src_type==ST_SALESORDER ? $srcline['qty_sent'] : $srcline['qty_done']); // add free qty on src doc
 182                                 $line_no++;
 183                         }
 184                 }
 185
 186                 if ($src_type == ST_SALESORDER || $src_type == 0) {
 187                         $this->src_docs = array( $sodata['order_no']=>$sodata['version']);
 188                 } else {
 189                         // get src_data from debtor_trans
 190                         $this->src_docs = get_customer_trans_version($src_type, array_unique($src_docs));
 191                 }
 192         }
 193         //-------------------------------------------------------------------------
 194         // Reading document into cart
 195         //
 196         function read($type, $trans_no=0, $prep_child=false) {
 197
 198                 global $SysPrefs, $Refs;
 199
 200                 if (!is_array($trans_no)) $trans_no = array($trans_no);
 201
 202                 if ($trans_no[0]) { // read old transaction
 203                         if ($type == ST_SALESORDER || $type == ST_SALESQUOTE) { // sales order || sales quotation
 204                                 read_sales_order($trans_no[0], $this, $type);
 205                         } else {        // other type of sales transaction
 206                                         read_sales_trans($type, $trans_no, $this);
 207                                         if ($this->order_no) { // free hand credit notes have no order_no
 208                                                 $sodata = get_sales_order_header($this->order_no, ST_SALESORDER);
 209                                                 $this->cust_ref = $sodata["customer_ref"];
 210                                         // currently currency is hard linked to debtor account
 211                                         //      $this->customer_currency = $sodata["curr_code"];
 212                                                 $this->delivery_to = $sodata["deliver_to"];
 213                                                 $this->delivery_address = $sodata["delivery_address"];
 214                                         // child transaction reedition - update with parent info unless it is freehand
 215                                         if (!$prep_child) // this is read for view/reedition
 216                                                 $this->set_parent_constraints($sodata, $trans_no[0]);
 217                                         }
 218                         }
 219                         // convert document into child and prepare qtys for entry
 220                         if ($prep_child)
 221                                 $this->prepare_child();
 222
 223                 } else { // new document
 224                                 $this->trans_type = $type;
 225                                 $this->trans_no = 0;
 226                                 $this->customer_currency = get_company_currency();
 227                                 // set new sales document defaults here
 228                                 if (get_global_customer() != ALL_TEXT)
 229                                   $this->customer_id = get_global_customer();
 230                                 else
 231                                   $this->customer_id = '';
 232                                 $this->document_date = new_doc_date();
 233                                 if (!is_date_in_fiscalyear($this->document_date))
 234                                         $this->document_date = end_fiscalyear();
 235                                 $this->reference = $Refs->get_next($this->trans_type);
 236                                 if ($type != ST_SALESORDER && $type != ST_SALESQUOTE) // Added 2.1 Joe Hunt 2008-11-12
 237                                 {
 238                                         $dim = get_company_pref('use_dimension');
 239                                         if ($dim > 0)
 240                                         {
 241                                                 if ($this->customer_id == '')
 242                                                         $this->dimension_id = 0;
 243                                                 else
 244                                                 {
 245                                                         $cust = get_customer($this->customer_id);
 246                                                         $this->dimension_id = $cust['dimension_id'];
 247                                                 }
 248                                                 if ($dim > 1)
 249                                                 {
 250                                                         if ($this->customer_id == '')
 251                                                                 $this->dimension2_id = 0;
 252                                                         else
 253                                                                 $this->dimension2_id = $cust['dimension2_id'];
 254                                                 }
 255                                         }
 256                                 }
 257                                 if ($type == ST_SALESINVOICE) {
 258                                         $this->due_date =
 259                                                 get_invoice_duedate($this->payment, $this->document_date);
 260                                 } else
 261                                         $this->due_date =
 262                                                 add_days($this->document_date, $SysPrefs->default_delivery_required_by());
 263                 }
 264                 $this->credit = get_current_cust_credit($this->customer_id);
 265         }
 266
 267         //-------------------------------------------------------------------------
 268         // Writing new/modified sales document to database.
 269         // Makes parent documents for direct delivery/invoice by recurent call.
 270         // $policy - 0 or 1:  writeoff/return for IV, back order/cancel for DN
 271         function write($policy=0) {
 272                 begin_transaction(); // prevents partial database changes in case of direct delivery/invoice
 273                 if ($this->reference != 'auto' && $this->trans_no == 0 && !is_new_reference($this->reference, $this->trans_type))
 274                 {
 275                         commit_transaction();
 276                         return -1;
 277                 }
 278                 if (count($this->src_docs) == 0 && ($this->trans_type == ST_SALESINVOICE || $this->trans_type == ST_CUSTDELIVERY)) {
 279                         // this is direct document - first add parent
 280                         $ref = $this->reference;
 281                         $date = $this->document_date;
 282                         $due_date = $this->due_date;
 283                         $dimension_id = $this->dimension_id;
 284                         $dimension2_id = $this->dimension2_id;
 285                         $this->trans_type = get_parent_type($this->trans_type);
 286
 287                         $this->reference = 'auto';
 288                         $trans_no = $this->write(1);
 289
 290                         // re-read parent document converting it to child
 291                         $this->read($this->trans_type, $trans_no, true);
 292                         $this->document_date = $date;
 293                         $this->reference = $ref;
 294                         $this->due_date = $due_date;
 295                         $this->dimension_id = $dimension_id;
 296                         $this->dimension2_id = $dimension2_id;
 297                 }
 298                 $this->reference = @html_entity_decode($this->reference, ENT_QUOTES);
 299                 $this->Comments = @html_entity_decode($this->Comments, ENT_QUOTES);
 300                 foreach($this->line_items as $lineno => $line) {
 301                         $this->line_items[$lineno]->stock_id = @html_entity_decode($line->stock_id, ENT_QUOTES);
 302                         $this->line_items[$lineno]->item_description = @html_entity_decode($line->item_description, ENT_QUOTES);
 303                 }
 304                 switch($this->trans_type) {
 305                         case ST_SALESINVOICE:
 306                                 $ret = write_sales_invoice($this); break;
 307                         case ST_CUSTCREDIT:
 308                                 $ret = write_credit_note($this, $policy); break;
 309                         case ST_CUSTDELIVERY:
 310                                 $ret = write_sales_delivery($this, $policy); break;
 311                         case ST_SALESORDER:
 312                         case ST_SALESQUOTE:
 313                                 if ($this->trans_no==0) // new document
 314                                         $ret = add_sales_order($this);
 315                                 else
 316                                         $ret = update_sales_order($this);
 317                 }
 318
 319                 commit_transaction();
 320
 321                 return $ret;
 322         }
 323
 324         function set_customer($customer_id, $customer_name, $currency, $discount, $payment, $cdiscount=0)
 325         {
 326                 $this->customer_name = $customer_name;
 327                 $this->customer_id = $customer_id;
 328                 $this->default_discount = $discount;
 329                 $this->customer_currency = $currency;
 330                 $this->payment = $payment;
 331                 $this->payment_terms = get_payment_terms($payment);
 332                 $this->cash_discount = $cdiscount;
 333
 334                 if ($this->payment_terms['cash_sale']) {
 335                         $this->Location = $this->pos['pos_location'];
 336                         $this->location_name = $this->pos['location_name'];
 337                 }
 338                 $this->credit = get_current_cust_credit($customer_id);
 339         }
 340
 341         function set_branch($branch_id, $tax_group_id, $tax_group_name, $phone='', $email='')
 342         {
 343                 $this->Branch = $branch_id;
 344                 $this->phone = $phone;
 345                 $this->email = $email;
 346                 $this->tax_group_id = $tax_group_id;
 347                 $this->tax_group_array = get_tax_group_items_as_array($tax_group_id);
 348         }
 349
 350         function set_sales_type($sales_type, $sales_name, $tax_included=0, $factor=0)
 351         {
 352             $this->sales_type = $sales_type;
 353             $this->sales_type_name = $sales_name;
 354             $this->tax_included = $tax_included;
 355             $this->price_factor = $factor;
 356         }
 357
 358         function set_location($id, $name)
 359         {
 360                 $this->Location = $id;
 361                 $this->location_name = $name;
 362         }
 363
 364         function set_delivery($shipper, $destination, $address, $freight_cost=null)
 365         {
 366                 $this->ship_via = $shipper;
 367                 $this->deliver_to = $destination;
 368                 $this->delivery_address = $address;
 369                 if (isset($freight_cost))
 370                         $this->freight_cost = $freight_cost;
 371         }
 372
 373         function add_to_cart($line_no, $stock_id, $qty, $price, $disc, $qty_done=0, $standard_cost=0, $description=null, $id=0, $src_no=0,
 374                 $src_id=0)
 375         {
 376                 $line = new line_details($stock_id, $qty, $price, $disc,
 377                         $qty_done,  $standard_cost, $description, $id, $src_no, $src_id);
 378
 379                 if ($line->valid) {
 380                         $this->line_items[$line_no] = $line;
 381                         return 1;
 382                 } else
 383                         display_error(_("You have to enter valid stock code or nonempty description"));
 384                 return 0;
 385         }
 386
 387         function update_cart_item($line_no, $qty, $price, $disc, $description="")
 388         {
 389                 if ($description != "")
 390                         $this->line_items[$line_no]->item_description = $description;
 391                 $this->line_items[$line_no]->quantity = $qty;
 392                 $this->line_items[$line_no]->qty_dispatched = $qty;
 393                 $this->line_items[$line_no]->price = $price;
 394                 $this->line_items[$line_no]->discount_percent = $disc;
 395         }
 396
 397         function update_add_cart_item_qty($line_no, $qty)
 398         {
 399                 $this->line_items[$line_no]->quantity += $qty;
 400         }
 401
 402         function remove_from_cart($line_no)
 403         {
 404                 array_splice($this->line_items, $line_no, 1);
 405         }
 406
 407         function clear_items()
 408         {
 409                 unset($this->line_items);
 410                 $this->line_items = array();
 411                 $this->sales_type = "";
 412                 $this->trans_no = 0;
 413                 $this->customer_id = $this->order_no = 0;
 414         }
 415
 416         function count_items()
 417         {
 418                 $counter=0;
 419                 foreach ($this->line_items as $line) {
 420                         if ($line->quantity!=$line->qty_done) $counter++;
 421                 }
 422                 return $counter;
 423         }
 424
 425         function get_items_total()
 426         {
 427                 $total = 0;
 428
 429                 foreach ($this->line_items as $ln_itm) {
 430                         $price = $ln_itm->line_price();
 431                         $total += round($ln_itm->quantity * $price * (1 - $ln_itm->discount_percent),
 432                            user_price_dec());
 433                 }
 434                 return $total;
 435         }
 436
 437         function get_items_total_dispatch()
 438         {
 439                 $total = 0;
 440
 441                 foreach ($this->line_items as $ln_itm) {
 442                         $price = $ln_itm->line_price();
 443                         $total += round(($ln_itm->qty_dispatched * $price * (1 - $ln_itm->discount_percent)),
 444                            user_price_dec());
 445                 }
 446                 return $total;
 447         }
 448
 449         function has_items_dispatch()
 450         {
 451                 foreach ($this->line_items as $ln_itm) {
 452                         if ($ln_itm->qty_dispatched > 0)
 453                                 return true;
 454                 }
 455                 return false;
 456         }
 457
 458         function any_already_delivered()
 459         {
 460                 /* Checks if there have been any line item processed */
 461
 462                 foreach ($this->line_items as $stock_item) {
 463                         if ($stock_item->qty_done !=0) {
 464                                 return 1;
 465                         }
 466                 }
 467
 468                 return 0;
 469
 470         }
 471
 472         function some_already_delivered($line_no)
 473         {
 474                 /* Checks if there have been deliveries of a specific line item */
 475                 if (isset($this->line_items[$line_no]) &&
 476                         $this->line_items[$line_no]->qty_done != 0) {
 477                         return 1;
 478                 }
 479                 return 0;
 480         }
 481
 482         function get_taxes($shipping_cost=null)
 483         {
 484                 $items = array();
 485                 $prices = array();
 486                 if($shipping_cost==null)
 487                         $shipping_cost = $this->freight_cost;
 488
 489                 foreach ($this->line_items as $ln_itm) {
 490                         $items[] = $ln_itm->stock_id;
 491                         $prices[] = round(((
 492                                 $this->trans_type==ST_SALESORDER ?      $ln_itm->quantity : $ln_itm->qty_dispatched) *
 493                                 $ln_itm->line_price()* (1 - $ln_itm->discount_percent)),  user_price_dec());
 494                 }
 495
 496                 $taxes = get_tax_for_items($items, $prices, $shipping_cost,
 497                   $this->tax_group_id, $this->tax_included,  $this->tax_group_array);
 498
 499     // Adjustment for swiss franken, we always have 5 rappen = 1/20 franken
 500     if ($this->customer_currency == 'CHF') {
 501                         $val = $taxes['1']['Value'];
 502                         $val1 = (floatval((intval(round(($val*20),0)))/20));
 503                         $taxes['1']['Value'] = $val1;
 504                 }
 505                 return $taxes;
 506         }
 507
 508
 509         function get_tax_free_shipping()
 510         {
 511
 512                 if ($this->tax_included==0)
 513                         return $this->freight_cost;
 514                 else
 515                         return ($this->freight_cost - $this->get_shipping_tax());
 516         }
 517
 518         function get_shipping_tax()
 519         {
 520
 521                 $tax_items = get_shipping_tax_as_array();
 522                 $tax_rate = 0;
 523                 if ($tax_items != null) {
 524                         foreach ($tax_items as $item_tax) {
 525                                 $index = $item_tax['tax_type_id'];
 526                                 if (isset($this->tax_group_array[$index]['rate'])) {
 527                                         $tax_rate += $item_tax['rate'];
 528                                 }
 529                         }
 530                 }
 531                 if($this->tax_included)
 532                         return round($this->freight_cost*$tax_rate/($tax_rate+100),  user_price_dec());
 533                 else
 534                         return round($this->freight_cost*$tax_rate/100,  user_price_dec());
 535         }
 536         /*
 537                 Returns transaction value including all taxes
 538         */
 539         function get_trans_total() {
 540
 541                 $total = $this->get_items_total() + $this->freight_cost;
 542                 $dec = user_price_dec();
 543                 if (!$this->tax_included ) {
 544                         $total += $this->get_shipping_tax();
 545                         $taxes = $this->get_taxes();
 546                         foreach($taxes as $tax)
 547                                 $total += round($tax['Value'], $dec);
 548                 }
 549
 550                 return $total;
 551         }
 552
 553         /*
 554                 Checks cart quantities on document_date.
 555                 Returns array of stock_ids which stock quantities would go negative on some day.
 556         */
 557         function check_qoh($date=null, $location=null)
 558         {
 559                 $low_stock = array();
 560                 // check only for customer delivery and direct sales invoice
 561                 if (!($this->trans_type == ST_CUSTDELIVERY || ($this->trans_type == ST_SALESINVOICE && $this->trans_no==0)))
 562                         return $low_stock;
 563
 564                 // collect quantities by stock_id
 565                 $qtys = array();
 566                 foreach ($this->line_items as $line_no => $line_item)
 567                 {
 568                         if (has_stock_holding($line_item->mb_flag))
 569                         {
 570                                 if (!$this->trans_no) // new delivery
 571                                         $qtys[$line_item->stock_id]['qty'] = $line_item->qty_dispatched + @$qtys[$line_item->stock_id]['qty'];
 572                                 else    // DN modification: check change in quantity
 573                                         $qtys[$line_item->stock_id]['qty'] = ($line_item->qty_dispatched-$line_item->qty_old) + @$qtys[$line_item->stock_id]['qty'];
 574                                 $qtys[$line_item->stock_id]['line'] = $line_no;
 575                         }
 576                 }
 577
 578                 foreach($qtys as $stock_id => $sum)
 579                 {
 580                         if (check_negative_stock($stock_id, -$sum['qty'], $location ? $location : $this->Location, $date ? $date : $this->document_date))
 581                                 $low_stock[] = $stock_id;
 582                 }
 583
 584                 return $low_stock;
 585         }
 586
 587 } /* end of class defintion */
 588
 589 class line_details
 590 {
 591         var $id;
 592         var $stock_id;
 593         var $item_description;
 594         var $units;
 595         var $mb_flag;
 596         var $tax_type;
 597         var $tax_type_name;
 598         var $src_no;    // number of src doc for this line
 599         var $src_id;
 600         var $price;
 601         var $discount_percent;
 602
 603         var $standard_cost;
 604         var $descr_editable;
 605
 606         var $valid; // validation in constructor
 607         /*
 608                 Line quantity properties in various cart create modes:
 609
 610                 view:
 611                 $quantity - quantity on current document
 612                 $qty_done - quantity processed on all child documents
 613                 $qty_dispatched - not used
 614                 $qty_old - not used
 615
 616                 edit:
 617                 $quantity - free parent quantity including this doc (= max allowed quantity)
 618                 $qty_done - qty processed on child documents (= min allowed qty)
 619                 $qty_dispatched - quantity currently selected to process
 620                 $qty_old - quantity processed on this document before reedition
 621
 622                 new child entry (view parent followed by prepare_child() call):
 623                 $quantity - max allowed quantity (get from parent)
 624                 $qty_done - qty processed on other child documents
 625                 $qty_dispatched - quantity currently selected to process
 626                 $qty_old - 0; not used
 627         */
 628         var $quantity;
 629         var $qty_done;
 630         var $qty_dispatched;
 631         var $qty_old = 0;
 632
 633
 634         function line_details ($stock_id, $qty, $prc, $disc_percent,
 635                 $qty_done, $standard_cost, $description, $id=0, $src_no=0, $src_id=0)
 636         {
 637         /* Constructor function to add a new LineDetail object with passed params */
 638
 639                 $this->id = $id;
 640                 $this->src_no = $src_no;
 641                 $this->src_id = $src_id;
 642                 $item_row = get_item($stock_id);
 643
 644                 if (!$item_row)
 645                         return;
 646
 647                 $this->mb_flag = $item_row["mb_flag"];
 648                 $this->units = $item_row["units"];
 649                 $this->descr_editable = $item_row["editable"];
 650                 if ($description == null || !$this->descr_editable)
 651                         $this->item_description = $item_row["description"];
 652                 else
 653                         $this->item_description = $description;
 654                 //$this->standard_cost = $item_row["material_cost"] + $item_row["labour_cost"] + $item_row["overhead_cost"];
 655                 $this->tax_type = $item_row["tax_type_id"];
 656                 $this->tax_type_name = $item_row["tax_type_name"];
 657                 $this->stock_id = $stock_id;
 658                 $this->quantity = $qty;
 659                 $this->qty_dispatched = $qty;
 660                 $this->price = $prc;
 661                 $this->discount_percent = $disc_percent;
 662                 $this->qty_done = $qty_done;
 663                 $this->standard_cost = $standard_cost;
 664                 $this->valid = true;
 665         }
 666
 667         // get unit price as stated on document
 668         function line_price()
 669         {
 670                 return $this->price;
 671         }
 672 }
 673
 674 ?>