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'] : $srcline['debtor_trans_no'];
 171                         if ($srcline['id'] == $line->src_id) {
 172                                 if ($this->trans_type == ST_SALESINVOICE)
 173                                         $line->src_no = $srcline['debtor_trans_no'];
 174                                 $line->qty_old = $line->qty_dispatched = $line->quantity;
 175                                 $line->quantity += $srcline['quantity'] -
 176                                         ($src_type==ST_SALESORDER ? $srcline['qty_sent'] : $srcline['qty_done']); // add free qty on src doc
 177                                 $line_no++;
 178                         }
 179                 }
 180
 181                 if ($src_type == ST_SALESORDER || $src_type == 0) {
 182                         $this->src_docs = array( $sodata['order_no']=>$sodata['version']);
 183                 } else {
 184                         // get src_data from debtor_trans
 185                         $this->src_docs = get_customer_trans_version($src_type, array_unique($src_docs));
 186                 }
 187         }
 188         //-------------------------------------------------------------------------
 189         // Reading document into cart
 190         //
 191         function read($type, $trans_no=0, $prep_child=false) {
 192
 193                 global $SysPrefs, $Refs;
 194
 195                 if (!is_array($trans_no)) $trans_no = array($trans_no);
 196
 197                 if ($trans_no[0]) { // read old transaction
 198                         if ($type == ST_SALESORDER || $type == ST_SALESQUOTE) { // sales order || sales quotation
 199                                 read_sales_order($trans_no[0], $this, $type);
 200                         } else {        // other type of sales transaction
 201                                         read_sales_trans($type, $trans_no, $this);
 202                                         if ($this->order_no) { // free hand credit notes have no order_no
 203                                                 $sodata = get_sales_order_header($this->order_no, ST_SALESORDER);
 204                                                 $this->cust_ref = $sodata["customer_ref"];
 205                                         // currently currency is hard linked to debtor account
 206                                         //      $this->customer_currency = $sodata["curr_code"];
 207                                                 $this->delivery_to = $sodata["deliver_to"];
 208                                                 $this->delivery_address = $sodata["delivery_address"];
 209                                         // child transaction reedition - update with parent info unless it is freehand
 210                                         if (!$prep_child) // this is read for view/reedition
 211                                                 $this->set_parent_constraints($sodata, $trans_no[0]);
 212                                         }
 213                         }
 214                         // convert document into child and prepare qtys for entry
 215                         if ($prep_child)
 216                                 $this->prepare_child();
 217
 218                 } else { // new document
 219                                 $this->trans_type = $type;
 220                                 $this->trans_no = 0;
 221                                 $this->customer_currency = get_company_currency();
 222                                 // set new sales document defaults here
 223                                 if (get_global_customer() != ALL_TEXT)
 224                                   $this->customer_id = get_global_customer();
 225                                 else
 226                                   $this->customer_id = '';
 227                                 $this->document_date = new_doc_date();
 228                                 if (!is_date_in_fiscalyear($this->document_date))
 229                                         $this->document_date = end_fiscalyear();
 230                                 $this->reference = $Refs->get_next($this->trans_type);
 231                                 if ($type != ST_SALESORDER && $type != ST_SALESQUOTE) // Added 2.1 Joe Hunt 2008-11-12
 232                                 {
 233                                         $dim = get_company_pref('use_dimension');
 234                                         if ($dim > 0)
 235                                         {
 236                                                 if ($this->customer_id == '')
 237                                                         $this->dimension_id = 0;
 238                                                 else
 239                                                 {
 240                                                         $cust = get_customer($this->customer_id);
 241                                                         $this->dimension_id = $cust['dimension_id'];
 242                                                 }
 243                                                 if ($dim > 1)
 244                                                 {
 245                                                         if ($this->customer_id == '')
 246                                                                 $this->dimension2_id = 0;
 247                                                         else
 248                                                                 $this->dimension2_id = $cust['dimension2_id'];
 249                                                 }
 250                                         }
 251                                 }
 252                                 if ($type == ST_SALESINVOICE) {
 253                                         $this->due_date =
 254                                                 get_invoice_duedate($this->payment, $this->document_date);
 255                                 } else
 256                                         $this->due_date =
 257                                                 add_days($this->document_date, $SysPrefs->default_delivery_required_by());
 258                 }
 259                 $this->credit = get_current_cust_credit($this->customer_id);
 260         }
 261
 262         //-------------------------------------------------------------------------
 263         // Writing new/modified sales document to database.
 264         // Makes parent documents for direct delivery/invoice by recurent call.
 265         // $policy - 0 or 1:  writeoff/return for IV, back order/cancel for DN
 266         function write($policy=0) {
 267                 begin_transaction(); // prevents partial database changes in case of direct delivery/invoice
 268                 if ($this->reference != 'auto' && $this->trans_no == 0 && !is_new_reference($this->reference, $this->trans_type))
 269                 {
 270                         commit_transaction();
 271                         return -1;
 272                 }
 273                 if (count($this->src_docs) == 0 && ($this->trans_type == ST_SALESINVOICE || $this->trans_type == ST_CUSTDELIVERY)) {
 274                         // this is direct document - first add parent
 275                         $ref = $this->reference;
 276                         $date = $this->document_date;
 277                         $due_date = $this->due_date;
 278                         $dimension_id = $this->dimension_id;
 279                         $dimension2_id = $this->dimension2_id;
 280                         $this->trans_type = get_parent_type($this->trans_type);
 281
 282                         $this->reference = 'auto';
 283                         $trans_no = $this->write(1);
 284
 285                         // re-read parent document converting it to child
 286                         $this->read($this->trans_type, $trans_no, true);
 287                         $this->document_date = $date;
 288                         $this->reference = $ref;
 289                         $this->due_date = $due_date;
 290                         $this->dimension_id = $dimension_id;
 291                         $this->dimension2_id = $dimension2_id;
 292                 }
 293                 $this->reference = @html_entity_decode($this->reference, ENT_QUOTES);
 294                 $this->Comments = @html_entity_decode($this->Comments, ENT_QUOTES);
 295                 foreach($this->line_items as $lineno => $line) {
 296                         $this->line_items[$lineno]->stock_id = @html_entity_decode($line->stock_id, ENT_QUOTES);
 297                         $this->line_items[$lineno]->item_description = @html_entity_decode($line->item_description, ENT_QUOTES);
 298                 }
 299                 switch($this->trans_type) {
 300                         case ST_SALESINVOICE:
 301                                 $ret = write_sales_invoice($this); break;
 302                         case ST_CUSTCREDIT:
 303                                 $ret = write_credit_note($this, $policy); break;
 304                         case ST_CUSTDELIVERY:
 305                                 $ret = write_sales_delivery($this, $policy); break;
 306                         case ST_SALESORDER:
 307                         case ST_SALESQUOTE:
 308                                 if ($this->trans_no==0) // new document
 309                                         $ret = add_sales_order($this);
 310                                 else
 311                                         $ret = update_sales_order($this);
 312                 }
 313
 314                 commit_transaction();
 315
 316                 return $ret;
 317         }
 318
 319         function set_customer($customer_id, $customer_name, $currency, $discount, $payment, $cdiscount=0)
 320         {
 321                 $this->customer_name = $customer_name;
 322                 $this->customer_id = $customer_id;
 323                 $this->default_discount = $discount;
 324                 $this->customer_currency = $currency;
 325                 $this->payment = $payment;
 326                 $this->payment_terms = get_payment_terms($payment);
 327                 $this->cash_discount = $cdiscount;
 328
 329                 if ($this->payment_terms['cash_sale']) {
 330                         $this->Location = $this->pos['pos_location'];
 331                         $this->location_name = $this->pos['location_name'];
 332                 }
 333                 $this->credit = get_current_cust_credit($customer_id);
 334         }
 335
 336         function set_branch($branch_id, $tax_group_id, $tax_group_name, $phone='', $email='')
 337         {
 338                 $this->Branch = $branch_id;
 339                 $this->phone = $phone;
 340                 $this->email = $email;
 341                 $this->tax_group_id = $tax_group_id;
 342                 $this->tax_group_array = get_tax_group_items_as_array($tax_group_id);
 343         }
 344
 345         function set_sales_type($sales_type, $sales_name, $tax_included=0, $factor=0)
 346         {
 347             $this->sales_type = $sales_type;
 348             $this->sales_type_name = $sales_name;
 349             $this->tax_included = $tax_included;
 350             $this->price_factor = $factor;
 351         }
 352
 353         function set_location($id, $name)
 354         {
 355                 $this->Location = $id;
 356                 $this->location_name = $name;
 357         }
 358
 359         function set_delivery($shipper, $destination, $address, $freight_cost=null)
 360         {
 361                 $this->ship_via = $shipper;
 362                 $this->deliver_to = $destination;
 363                 $this->delivery_address = $address;
 364                 if (isset($freight_cost))
 365                         $this->freight_cost = $freight_cost;
 366         }
 367
 368         function add_to_cart($line_no, $stock_id, $qty, $price, $disc, $qty_done=0, $standard_cost=0, $description=null, $id=0, $src_no=0,
 369                 $src_id=0)
 370         {
 371                 $line = new line_details($stock_id, $qty, $price, $disc,
 372                         $qty_done,  $standard_cost, $description, $id, $src_no, $src_id);
 373
 374                 if ($line->valid) {
 375                         $this->line_items[$line_no] = $line;
 376                         return 1;
 377                 } else
 378                         display_error(_("You have to enter valid stock code or nonempty description"));
 379                 return 0;
 380         }
 381
 382         function update_cart_item($line_no, $qty, $price, $disc, $description="")
 383         {
 384                 if ($description != "")
 385                         $this->line_items[$line_no]->item_description = $description;
 386                 $this->line_items[$line_no]->quantity = $qty;
 387                 $this->line_items[$line_no]->qty_dispatched = $qty;
 388                 $this->line_items[$line_no]->price = $price;
 389                 $this->line_items[$line_no]->discount_percent = $disc;
 390         }
 391
 392         function update_add_cart_item_qty($line_no, $qty)
 393         {
 394                 $this->line_items[$line_no]->quantity += $qty;
 395         }
 396
 397         function remove_from_cart($line_no)
 398         {
 399                 array_splice($this->line_items, $line_no, 1);
 400         }
 401
 402         function clear_items()
 403         {
 404                 unset($this->line_items);
 405                 $this->line_items = array();
 406                 $this->sales_type = "";
 407                 $this->trans_no = 0;
 408                 $this->customer_id = $this->order_no = 0;
 409         }
 410
 411         function count_items()
 412         {
 413                 $counter=0;
 414                 foreach ($this->line_items as $line) {
 415                         if ($line->quantity!=$line->qty_done) $counter++;
 416                 }
 417                 return $counter;
 418         }
 419
 420         function get_items_total()
 421         {
 422                 $total = 0;
 423
 424                 foreach ($this->line_items as $ln_itm) {
 425                         $price = $ln_itm->line_price();
 426                         $total += round($ln_itm->quantity * $price * (1 - $ln_itm->discount_percent),
 427                            user_price_dec());
 428                 }
 429                 return $total;
 430         }
 431
 432         function get_items_total_dispatch()
 433         {
 434                 $total = 0;
 435
 436                 foreach ($this->line_items as $ln_itm) {
 437                         $price = $ln_itm->line_price();
 438                         $total += round(($ln_itm->qty_dispatched * $price * (1 - $ln_itm->discount_percent)),
 439                            user_price_dec());
 440                 }
 441                 return $total;
 442         }
 443
 444         function has_items_dispatch()
 445         {
 446                 foreach ($this->line_items as $ln_itm) {
 447                         if ($ln_itm->qty_dispatched > 0)
 448                                 return true;
 449                 }
 450                 return false;
 451         }
 452
 453         function any_already_delivered()
 454         {
 455                 /* Checks if there have been any line item processed */
 456
 457                 foreach ($this->line_items as $stock_item) {
 458                         if ($stock_item->qty_done !=0) {
 459                                 return 1;
 460                         }
 461                 }
 462
 463                 return 0;
 464
 465         }
 466
 467         function some_already_delivered($line_no)
 468         {
 469                 /* Checks if there have been deliveries of a specific line item */
 470                 if (isset($this->line_items[$line_no]) &&
 471                         $this->line_items[$line_no]->qty_done != 0) {
 472                         return 1;
 473                 }
 474                 return 0;
 475         }
 476
 477         function get_taxes($shipping_cost=null)
 478         {
 479                 $items = array();
 480                 $prices = array();
 481                 if($shipping_cost==null)
 482                         $shipping_cost = $this->freight_cost;
 483
 484                 foreach ($this->line_items as $ln_itm) {
 485                         $items[] = $ln_itm->stock_id;
 486                         $prices[] = round(((
 487                                 $this->trans_type==ST_SALESORDER ?      $ln_itm->quantity : $ln_itm->qty_dispatched) *
 488                                 $ln_itm->line_price()* (1 - $ln_itm->discount_percent)),  user_price_dec());
 489                 }
 490
 491                 $taxes = get_tax_for_items($items, $prices, $shipping_cost,
 492                   $this->tax_group_id, $this->tax_included,  $this->tax_group_array);
 493
 494     // Adjustment for swiss franken, we always have 5 rappen = 1/20 franken
 495     if ($this->customer_currency == 'CHF') {
 496                         $val = $taxes['1']['Value'];
 497                         $val1 = (floatval((intval(round(($val*20),0)))/20));
 498                         $taxes['1']['Value'] = $val1;
 499                 }
 500                 return $taxes;
 501         }
 502
 503
 504         function get_tax_free_shipping()
 505         {
 506
 507                 if ($this->tax_included==0)
 508                         return $this->freight_cost;
 509                 else
 510                         return ($this->freight_cost - $this->get_shipping_tax());
 511         }
 512
 513         function get_shipping_tax()
 514         {
 515
 516                 $tax_items = get_shipping_tax_as_array();
 517                 $tax_rate = 0;
 518                 if ($tax_items != null) {
 519                         foreach ($tax_items as $item_tax) {
 520                                 $index = $item_tax['tax_type_id'];
 521                                 if (isset($this->tax_group_array[$index]['rate'])) {
 522                                         $tax_rate += $item_tax['rate'];
 523                                 }
 524                         }
 525                 }
 526                 if($this->tax_included)
 527                         return round($this->freight_cost*$tax_rate/($tax_rate+100),  user_price_dec());
 528                 else
 529                         return round($this->freight_cost*$tax_rate/100,  user_price_dec());
 530         }
 531         /*
 532                 Returns transaction value including all taxes
 533         */
 534         function get_trans_total() {
 535
 536                 $total = $this->get_items_total() + $this->freight_cost;
 537                 $dec = user_price_dec();
 538                 if (!$this->tax_included ) {
 539                         $total += $this->get_shipping_tax();
 540                         $taxes = $this->get_taxes();
 541                         foreach($taxes as $tax)
 542                                 $total += round($tax['Value'], $dec);
 543                 }
 544
 545                 return $total;
 546         }
 547
 548         /*
 549                 Checks cart quantities on document_date.
 550                 Returns array of stock_ids which stock quantities would go negative on some day.
 551         */
 552         function check_qoh($date=null, $location=null)
 553         {
 554                 $low_stock = array();
 555                 // check only for customer delivery and direct sales invoice
 556                 if (!($this->trans_type == ST_CUSTDELIVERY || ($this->trans_type == ST_SALESINVOICE && $this->trans_no==0)))
 557                         return $low_stock;
 558
 559                 // collect quantities by stock_id
 560                 $qtys = array();
 561                 foreach ($this->line_items as $line_no => $line_item)
 562                 {
 563                         if (has_stock_holding($line_item->mb_flag))
 564                         {
 565                                 if (!$this->trans_no) // new delivery
 566                                         $qtys[$line_item->stock_id]['qty'] = $line_item->qty_dispatched + @$qtys[$line_item->stock_id]['qty'];
 567                                 else    // DN modification: check change in quantity
 568                                         $qtys[$line_item->stock_id]['qty'] = ($line_item->qty_dispatched-$line_item->qty_old) + @$qtys[$line_item->stock_id]['qty'];
 569                                 $qtys[$line_item->stock_id]['line'] = $line_no;
 570                         }
 571                 }
 572
 573                 foreach($qtys as $stock_id => $sum)
 574                 {
 575                         if (check_negative_stock($stock_id, -$sum['qty'], $location ? $location : $this->Location, $date ? $date : $this->document_date))
 576                                 $low_stock[] = $stock_id;
 577                 }
 578
 579                 return $low_stock;
 580         }
 581
 582 } /* end of class defintion */
 583
 584 class line_details
 585 {
 586         var $id;
 587         var $stock_id;
 588         var $item_description;
 589         var $units;
 590         var $mb_flag;
 591         var $tax_type;
 592         var $tax_type_name;
 593         var $src_no;    // number of src doc for this line
 594         var $src_id;
 595         var $price;
 596         var $discount_percent;
 597
 598         var $standard_cost;
 599         var $descr_editable;
 600
 601         var $valid; // validation in constructor
 602         /*
 603                 Line quantity properties in various cart create modes:
 604
 605                 view:
 606                 $quantity - quantity on current document
 607                 $qty_done - quantity processed on all child documents
 608                 $qty_dispatched - not used
 609                 $qty_old - not used
 610
 611                 edit:
 612                 $quantity - free parent quantity including this doc (= max allowed quantity)
 613                 $qty_done - qty processed on child documents (= min allowed qty)
 614                 $qty_dispatched - quantity currently selected to process
 615                 $qty_old - quantity processed on this document before reedition
 616
 617                 new child entry (view parent followed by prepare_child() call):
 618                 $quantity - max allowed quantity (get from parent)
 619                 $qty_done - qty processed on other child documents
 620                 $qty_dispatched - quantity currently selected to process
 621                 $qty_old - 0; not used
 622         */
 623         var $quantity;
 624         var $qty_done;
 625         var $qty_dispatched;
 626         var $qty_old = 0;
 627
 628
 629         function line_details ($stock_id, $qty, $prc, $disc_percent,
 630                 $qty_done, $standard_cost, $description, $id=0, $src_no=0, $src_id=0)
 631         {
 632         /* Constructor function to add a new LineDetail object with passed params */
 633
 634                 $this->id = $id;
 635                 $this->src_no = $src_no;
 636                 $this->src_id = $src_id;
 637                 $item_row = get_item($stock_id);
 638
 639                 if (!$item_row)
 640                         return;
 641
 642                 $this->mb_flag = $item_row["mb_flag"];
 643                 $this->units = $item_row["units"];
 644                 $this->descr_editable = $item_row["editable"];
 645                 if ($description == null || !$this->descr_editable)
 646                         $this->item_description = $item_row["description"];
 647                 else
 648                         $this->item_description = $description;
 649                 //$this->standard_cost = $item_row["material_cost"] + $item_row["labour_cost"] + $item_row["overhead_cost"];
 650                 $this->tax_type = $item_row["tax_type_id"];
 651                 $this->tax_type_name = $item_row["tax_type_name"];
 652                 $this->stock_id = $stock_id;
 653                 $this->quantity = $qty;
 654                 $this->qty_dispatched = $qty;
 655                 $this->price = $prc;
 656                 $this->discount_percent = $disc_percent;
 657                 $this->qty_done = $qty_done;
 658                 $this->standard_cost = $standard_cost;
 659                 $this->valid = true;
 660         }
 661
 662         // get unit price as stated on document
 663         function line_price()
 664         {
 665                 return $this->price;
 666         }
 667 }
 668
 669 ?>