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