CRM/Price/BAO/PriceField.php

   1 <?php
   2 /*
   3   +--------------------------------------------------------------------+
   4   | CiviCRM version 4.5                                                |
   5   +--------------------------------------------------------------------+
   6   | Copyright CiviCRM LLC (c) 2004-2014                                |
   7   +--------------------------------------------------------------------+
   8   | This file is a part of CiviCRM.                                    |
   9   |                                                                    |
  10   | CiviCRM is free software; you can copy, modify, and distribute it  |
  11   | under the terms of the GNU Affero General Public License           |
  12   | Version 3, 19 November 2007 and the CiviCRM Licensing Exception.   |
  13   |                                                                    |
  14   | CiviCRM is distributed in the hope that it will be useful, but     |
  15   | WITHOUT ANY WARRANTY; without even the implied warranty of         |
  16   | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.               |
  17   | See the GNU Affero General Public License for more details.        |
  18   |                                                                    |
  19   | You should have received a copy of the GNU Affero General Public   |
  20   | License and the CiviCRM Licensing Exception along                  |
  21   | with this program; if not, contact CiviCRM LLC                     |
  22   | at info[AT]civicrm[DOT]org. If you have questions about the        |
  23   | GNU Affero General Public License or the licensing of CiviCRM,     |
  24   | see the CiviCRM license FAQ at http://civicrm.org/licensing        |
  25   +--------------------------------------------------------------------+
  26 */
  27
  28 /**
  29  *
  30  * @package CRM
  31  * @copyright CiviCRM LLC (c) 2004-2014
  32  * $Id$
  33  *
  34  */
  35
  36 /**
  37  * Business objects for managing price fields.
  38  *
  39  */
  40 class CRM_Price_BAO_PriceField extends CRM_Price_DAO_PriceField {
  41
  42   protected $_options;
  43
  44   /**
  45    * takes an associative array and creates a price field object
  46    *
  47    * the function extract all the params it needs to initialize the create a
  48    * price field object. the params array could contain additional unused name/value
  49    * pairs
  50    *
  51    * @param array $params (reference ) an assoc array of name/value pairs
  52    *
  53    * @internal param array $ids the array that holds all the db ids
  54    *
  55    * @return object CRM_Price_BAO_PriceField object
  56    * @access public
  57    * @static
  58    */
  59   static function &add(&$params) {
  60     $priceFieldBAO = new CRM_Price_BAO_PriceField();
  61
  62     $priceFieldBAO->copyValues($params);
  63
  64     if ($id = CRM_Utils_Array::value('id', $params)) {
  65       $priceFieldBAO->id = $id;
  66     }
  67
  68     $priceFieldBAO->save();
  69     return $priceFieldBAO;
  70   }
  71
  72   /**
  73    * takes an associative array and creates a price field object
  74    *
  75    * This function is invoked from within the web form layer and also from the api layer
  76    *
  77    * @param array $params (reference) an assoc array of name/value pairs
  78    *
  79    * @return object CRM_Price_DAO_PriceField object
  80    * @access public
  81    * @static
  82    */
  83   static function create(&$params) {
  84     $transaction = new CRM_Core_Transaction();
  85
  86     $priceField = self::add($params);
  87
  88     if (is_a($priceField, 'CRM_Core_Error')) {
  89       $transaction->rollback();
  90       return $priceField;
  91     }
  92
  93     $options = $optionsIds = array();
  94     $maxIndex = CRM_Price_Form_Field::NUM_OPTION;
  95
  96     if ($priceField->html_type == 'Text') {
  97       $maxIndex = 1;
  98
  99       $fieldValue = new CRM_Price_DAO_PriceFieldValue();
 100       $fieldValue->price_field_id = $priceField->id;
 101
 102       // update previous field values( if any )
 103       if ($fieldValue->find(TRUE)) {
 104         $optionsIds['id'] = $fieldValue->id;
 105       }
 106     }
 107     $defaultArray = array();
 108     if ($params['html_type'] == 'CheckBox' && isset($params['default_checkbox_option'])) {
 109       $tempArray = array_keys($params['default_checkbox_option']);
 110       foreach ($tempArray as $v) {
 111         if ($params['option_amount'][$v]) {
 112           $defaultArray[$v] = 1;
 113         }
 114       }
 115     }
 116     else {
 117       if (!empty($params['default_option'])) {
 118         $defaultArray[$params['default_option']] = 1;
 119       }
 120     }
 121
 122     for ($index = 1; $index <= $maxIndex; $index++) {
 123       if (array_key_exists('option_amount', $params) &&
 124         array_key_exists($index, $params['option_amount']) &&
 125         (CRM_Utils_Array::value($index, CRM_Utils_Array::value('option_label', $params)) || !empty($params['is_quick_config'])) &&
 126         !CRM_Utils_System::isNull($params['option_amount'][$index])
 127       ) {
 128         $options = array(
 129           'price_field_id' => $priceField->id,
 130           'label' => trim($params['option_label'][$index]),
 131           'name' => CRM_Utils_String::munge($params['option_label'][$index], '_', 64),
 132           'amount' => CRM_Utils_Rule::cleanMoney(trim($params['option_amount'][$index])),
 133           'count' => CRM_Utils_Array::value($index, CRM_Utils_Array::value('option_count', $params), NULL),
 134           'max_value' => CRM_Utils_Array::value($index, CRM_Utils_Array::value('option_max_value', $params), NULL),
 135           'description' => CRM_Utils_Array::value($index, CRM_Utils_Array::value('option_description', $params), NULL),
 136           'membership_type_id' => CRM_Utils_Array::value($index, CRM_Utils_Array::value('membership_type_id', $params), NULL),
 137           'weight' => $params['option_weight'][$index],
 138           'is_active' => 1,
 139           'is_default' => CRM_Utils_Array::value($params['option_weight'][$index], $defaultArray) ? $defaultArray[$params['option_weight'][$index]] : 0,
 140           'membership_num_terms' => NULL,
 141         );
 142
 143         if ($options['membership_type_id']) {
 144           $options['membership_num_terms'] = CRM_Utils_Array::value($index, CRM_Utils_Array::value('membership_num_terms', $params), 1);
 145         }
 146
 147         if (CRM_Utils_Array::value( $index, CRM_Utils_Array::value('option_financial_type_id', $params))) {
 148           $options['financial_type_id'] =  $params['option_financial_type_id'][$index];
 149         } elseif (!empty($params['financial_type_id'])) {
 150           $options['financial_type_id'] = $params['financial_type_id'];
 151         }
 152
 153         if ($opIds = CRM_Utils_Array::value('option_id', $params)) {
 154           if ($opId = CRM_Utils_Array::value($index, $opIds)) {
 155             $optionsIds['id'] = $opId;
 156           } else {
 157             $optionsIds['id'] = NULL;
 158           }
 159         }
 160         CRM_Price_BAO_PriceFieldValue::create($options, $optionsIds);
 161       }
 162     }
 163
 164     $transaction->commit();
 165     return $priceField;
 166   }
 167
 168   /**
 169    * Takes a bunch of params that are needed to match certain criteria and
 170    * retrieves the relevant objects. Typically the valid params are only
 171    * contact_id. We'll tweak this function to be more full featured over a period
 172    * of time. This is the inverse function of create. It also stores all the retrieved
 173    * values in the default array
 174    *
 175    * @param array $params   (reference ) an assoc array of name/value pairs
 176    * @param array $defaults (reference ) an assoc array to hold the flattened values
 177    *
 178    * @return object CRM_Price_DAO_PriceField object
 179    * @access public
 180    * @static
 181    */
 182   static function retrieve(&$params, &$defaults) {
 183     return CRM_Core_DAO::commonRetrieve('CRM_Price_DAO_PriceField', $params, $defaults);
 184   }
 185
 186   /**
 187    * update the is_active flag in the db
 188    *
 189    * @param int      $id         Id of the database record
 190    * @param boolean  $is_active  Value we want to set the is_active field
 191    *
 192    * @return   Object            DAO object on sucess, null otherwise
 193    *
 194    * @access public
 195    * @static
 196    */
 197   static function setIsActive($id, $is_active) {
 198     return CRM_Core_DAO::setFieldValue('CRM_Price_DAO_PriceField', $id, 'is_active', $is_active);
 199   }
 200
 201   /**
 202    * Get the field title.
 203    *
 204    * @param int $id id of field.
 205    *
 206    * @return string name
 207    *
 208    * @access public
 209    * @static
 210    *
 211    */
 212   public static function getTitle($id) {
 213     return CRM_Core_DAO::getFieldValue('CRM_Price_DAO_PriceField', $id, 'label');
 214   }
 215
 216   /**
 217    * This function for building custom fields
 218    *
 219    * @param object $qf form object (reference)
 220    * @param string $elementName name of the custom field
 221    * @param $fieldId
 222    * @param boolean $inactiveNeeded
 223    * @param boolean $useRequired true if required else false
 224    * @param string $label label for custom field
 225    *
 226    * @param null $fieldOptions
 227    * @param array $feezeOptions
 228    *
 229    * @return null
 230    * @internal param bool $search true if used for search else false
 231    * @access public
 232    * @static
 233    */
 234   public static function addQuickFormElement(&$qf,
 235     $elementName,
 236     $fieldId,
 237     $inactiveNeeded,
 238     $useRequired = TRUE,
 239     $label = NULL,
 240     $fieldOptions = NULL,
 241     $feezeOptions = array()
 242   ) {
 243
 244     $field = new CRM_Price_DAO_PriceField();
 245     $field->id = $fieldId;
 246     if (!$field->find(TRUE)) {
 247       /* FIXME: failure! */
 248       return NULL;
 249     }
 250
 251     $is_pay_later = 0;
 252     if (isset($qf->_mode) && empty($qf->_mode)) {
 253       $is_pay_later = 1;
 254     }
 255     elseif (isset($qf->_values)) {
 256       $is_pay_later = CRM_Utils_Array::value( 'is_pay_later', $qf->_values);
 257     }
 258
 259     $otherAmount = $qf->get('values');
 260     $config = CRM_Core_Config::singleton();
 261     $currencySymbol = CRM_Core_DAO::getFieldValue('CRM_Financial_DAO_Currency',$config->defaultCurrency,'symbol','name');
 262     $qf->assign('currencySymbol', $currencySymbol);
 263     // get currency name for price field and option attributes
 264     $currencyName = $config->defaultCurrency;
 265
 266     if (!isset($label)) {
 267       $label = (!empty($qf->_membershipBlock) && $field->name == 'contribution_amount') ? ts('Additional Contribution') : $field->label;
 268     }
 269
 270     if ($field->name == 'contribution_amount') {
 271       $qf->_contributionAmount = 1;
 272     }
 273
 274     if (isset($qf->_online) && $qf->_online) {
 275       $useRequired = FALSE;
 276     }
 277
 278     $customOption = $fieldOptions;
 279     if (!is_array($customOption)) {
 280       $customOption = CRM_Price_BAO_PriceField::getOptions($field->id, $inactiveNeeded);
 281     }
 282
 283     //use value field.
 284     $valueFieldName = 'amount';
 285     $seperator = '|';
 286     switch ($field->html_type) {
 287       case 'Text':
 288         $optionKey = key($customOption);
 289         $count = CRM_Utils_Array::value('count', $customOption[$optionKey], '');
 290         $max_value = CRM_Utils_Array::value('max_value', $customOption[$optionKey], '');
 291         $priceVal = implode($seperator, array($customOption[$optionKey][$valueFieldName], $count, $max_value));
 292
 293         $extra = array();
 294         if (!empty($qf->_quickConfig) && !empty($qf->_contributionAmount)) {
 295           foreach($fieldOptions as &$fieldOption) {
 296             if ($fieldOption['name'] == 'other_amount') {
 297               $fieldOption['label'] = $fieldOption['label'] . '  ' . $currencySymbol;
 298             }
 299           }
 300           $qf->assign('priceset', $elementName);
 301           $extra = array('onclick' => 'useAmountOther();');
 302         }
 303
 304         if (!empty($qf->_membershipBlock) && !empty($qf->_quickConfig) && $field->name == 'other_amount' && empty($qf->_contributionAmount)) {
 305           $useRequired = 0;
 306         }
 307         elseif (!empty($fieldOptions[$optionKey]['label'])) {      //check for label.
 308           $label = $fieldOptions[$optionKey]['label'];
 309         }
 310
 311         $element = &$qf->add('text', $elementName, $label,
 312                    array_merge($extra,
 313                      array('price' => json_encode(array($optionKey, $priceVal)),
 314                        'size' => '4',
 315                      )
 316                    ),
 317                    $useRequired && $field->is_required
 318         );
 319         if ($is_pay_later) {
 320           $qf->add( 'text', 'txt-'.$elementName, $label, array( 'size' => '4'));
 321         }
 322
 323         // CRM-6902
 324         if (in_array($optionKey, $feezeOptions)) {
 325           $element->freeze();
 326         }
 327
 328         //CRM-10117
 329         if (!empty($qf->_quickConfig)) {
 330           $message = ts('Please enter a valid amount.');
 331           $type = 'money';
 332         }
 333         else {
 334           $message = ts('%1 must be an integer (whole number).', array(1 => $label));
 335           $type = 'positiveInteger';
 336         }
 337         // integers will have numeric rule applied to them.
 338         $qf->addRule($elementName, $message, $type);
 339         break;
 340
 341       case 'Radio':
 342         $choice = array();
 343
 344         if (!empty($qf->_quickConfig) && !empty($qf->_contributionAmount)) {
 345           $qf->assign('contriPriceset', $elementName);
 346         }
 347
 348         foreach ($customOption as $opId => $opt) {
 349           if ($field->is_display_amounts) {
 350             $opt['label'] = !empty($opt['label']) ? $opt['label'] : '';
 351             $opt['label'] = '<span class="crm-price-amount-amount">' . CRM_Utils_Money::format($opt[$valueFieldName]) . '</span> <span class="crm-price-amount-label">' . $opt['label'] . '</span>';
 352           }
 353           $count = CRM_Utils_Array::value('count', $opt, '');
 354           $max_value = CRM_Utils_Array::value('max_value', $opt, '');
 355           $priceVal = implode($seperator, array($opt[$valueFieldName], $count, $max_value));
 356           $extra = array('price' => json_encode(array($elementName, $priceVal)),
 357                    'data-amount' => $opt[$valueFieldName],
 358                    'data-currency' => $currencyName,
 359           );
 360           if (!empty($qf->_quickConfig) && $field->name == 'contribution_amount') {
 361             $extra += array('onclick' => 'clearAmountOther();');
 362           }
 363           elseif (!empty($qf->_quickConfig) && $field->name == 'membership_amount') {
 364             $extra += array(
 365               'onclick' => "return showHideAutoRenew({$opt['membership_type_id']});",
 366               'membership-type' => $opt['membership_type_id'],
 367             );
 368             $qf->assign('membershipFieldID',$field->id);
 369           }
 370
 371           $choice[$opId] = $qf->createElement('radio', NULL, '', $opt['label'], $opt['id'], $extra);
 372
 373           if ($is_pay_later) {
 374             $qf->add( 'text', 'txt-'.$elementName, $label, array( 'size' => '4'));
 375           }
 376
 377           // CRM-6902
 378           if (in_array($opId, $feezeOptions)) {
 379             $choice[$opId]->freeze();
 380           }
 381         }
 382         if (!empty($qf->_membershipBlock) && $field->name == 'contribution_amount') {
 383           $choice[] = $qf->createElement('radio', NULL, '', ts('No thank you'), '-1',
 384             array(
 385               'onclick' => 'clearAmountOther();',
 386             )
 387           );
 388         }
 389
 390         if (!$field->is_required) {
 391           // add "none" option
 392           if (!empty($otherAmount['is_allow_other_amount']) && $field->name == 'contribution_amount') {
 393             $none = ts('Other Amount');
 394           }
 395           elseif (!empty($qf->_membershipBlock) && empty($qf->_membershipBlock['is_required']) && $field->name == 'membership_amount') {
 396             $none = ts('No thank you');
 397           }
 398           else {
 399             $none = ts('- none -');
 400           }
 401
 402           $choice[] = $qf->createElement('radio', NULL, '', $none, '0',
 403             array('price' => json_encode(array($elementName, '0')))
 404           );
 405         }
 406
 407         $element = &$qf->addGroup($choice, $elementName, $label);
 408
 409         // make contribution field required for quick config when membership block is enabled
 410         if (($field->name == 'membership_amount' || $field->name == 'contribution_amount')
 411           && !empty($qf->_membershipBlock) && !$field->is_required) {
 412           $useRequired = $field->is_required = TRUE;
 413         }
 414
 415         if ($useRequired && $field->is_required) {
 416           $qf->addRule($elementName, ts('%1 is a required field.', array(1 => $label)), 'required');
 417         }
 418         break;
 419
 420       case 'Select':
 421         $selectOption = $allowedOptions = $priceVal = array();
 422
 423         foreach ($customOption as $opt) {
 424           $count = CRM_Utils_Array::value('count', $opt, '');
 425           $max_value = CRM_Utils_Array::value('max_value', $opt, '');
 426           $priceVal[$opt['id']] = implode($seperator, array($opt[$valueFieldName], $count, $max_value));
 427
 428           if ($field->is_display_amounts) {
 429             $opt['label'] .= '&nbsp;-&nbsp;';
 430             $opt['label'] .= CRM_Utils_Money::format($opt[$valueFieldName]);
 431           }
 432           $selectOption[$opt['id']] = $opt['label'];
 433
 434           if (!in_array($opt['id'], $feezeOptions)) {
 435             $allowedOptions[] = $opt['id'];
 436           }
 437           if ($is_pay_later) {
 438             $qf->add( 'text', 'txt-'.$elementName, $label, array( 'size' => '4'));
 439           }
 440         }
 441         $element = &$qf->add('select', $elementName, $label,
 442           array(
 443             '' => ts('- select -')) + $selectOption,
 444             $useRequired && $field->is_required,
 445             array('price' => json_encode($priceVal))
 446           );
 447
 448         // CRM-6902
 449         $button = substr($qf->controller->getButtonName(), -4);
 450         if (!empty($feezeOptions) && $button != 'skip') {
 451           $qf->addRule($elementName, ts('Sorry, this option is currently sold out.'), 'regex', "/" . implode('|', $allowedOptions) . "/");
 452         }
 453         break;
 454
 455       case 'CheckBox':
 456
 457         $check = array();
 458         foreach ($customOption as $opId => $opt) {
 459           $count = CRM_Utils_Array::value('count', $opt, '');
 460           $max_value = CRM_Utils_Array::value('max_value', $opt, '');
 461           $priceVal = implode($seperator, array($opt[$valueFieldName], $count, $max_value));
 462
 463           if ($field->is_display_amounts) {
 464             $opt['label'] .= '&nbsp;-&nbsp;';
 465             $opt['label'] .= CRM_Utils_Money::format($opt[$valueFieldName]);
 466           }
 467           $check[$opId] = &$qf->createElement('checkbox', $opt['id'], NULL, $opt['label'],
 468             array('price' => json_encode(array($opt['id'], $priceVal)),
 469              'data-amount' => $opt[$valueFieldName],
 470              'data-currency' => $currencyName,
 471             )
 472           );
 473           if ($is_pay_later) {
 474             $txtcheck[$opId] =& $qf->createElement( 'text', $opId, $opt['label'], array( 'size' => '4' ) );
 475             $qf->addGroup($txtcheck, 'txt-'.$elementName, $label);
 476           }
 477           // CRM-6902
 478           if (in_array($opId, $feezeOptions)) {
 479             $check[$opId]->freeze();
 480           }
 481         }
 482         $element = &$qf->addGroup($check, $elementName, $label);
 483         if ($useRequired && $field->is_required) {
 484           $qf->addRule($elementName, ts('%1 is a required field.', array(1 => $label)), 'required');
 485         }
 486         break;
 487     }
 488     if (isset($qf->_online) && $qf->_online) {
 489       $element->freeze();
 490     }
 491   }
 492
 493   /**
 494    * Retrieve a list of options for the specified field
 495    *
 496    * @param int $fieldId price field ID
 497    * @param bool $inactiveNeeded include inactive options
 498    * @param bool $reset ignore stored values\
 499    *
 500    * @return array array of options
 501    */
 502   public static function getOptions($fieldId, $inactiveNeeded = FALSE, $reset = FALSE) {
 503     static $options = array();
 504
 505     if ($reset || empty($options[$fieldId])) {
 506       $values = array();
 507       CRM_Price_BAO_PriceFieldValue::getValues($fieldId, $values, 'weight', !$inactiveNeeded);
 508       $options[$fieldId] = $values;
 509     }
 510
 511     return $options[$fieldId];
 512   }
 513
 514   public static function getOptionId($optionLabel, $fid) {
 515     if (!$optionLabel || !$fid) {
 516       return;
 517     }
 518
 519     $optionGroupName = "civicrm_price_field.amount.{$fid}";
 520
 521     $query = "
 522 SELECT
 523         option_value.id as id
 524 FROM
 525         civicrm_option_value option_value,
 526         civicrm_option_group option_group
 527 WHERE
 528         option_group.name = %1
 529     AND option_group.id = option_value.option_group_id
 530     AND option_value.label = %2";
 531
 532     $dao = CRM_Core_DAO::executeQuery($query, array(1 => array($optionGroupName, 'String'), 2 => array($optionLabel, 'String')));
 533
 534     while ($dao->fetch()) {
 535       return $dao->id;
 536     }
 537   }
 538
 539   /**
 540    * Delete the price set field.
 541    *
 542    * @param   int   $id    Field Id
 543    *
 544    * @return  boolean
 545    *
 546    * @access public
 547    * @static
 548    *
 549    */
 550   public static function deleteField($id) {
 551     $field = new CRM_Price_DAO_PriceField();
 552     $field->id = $id;
 553
 554     if ($field->find(TRUE)) {
 555       // delete the options for this field
 556       CRM_Price_BAO_PriceFieldValue::deleteValues($id);
 557
 558       // reorder the weight before delete
 559       $fieldValues = array('price_set_id' => $field->price_set_id);
 560
 561       CRM_Utils_Weight::delWeight('CRM_Price_DAO_PriceField', $field->id, $fieldValues);
 562
 563       // now delete the field
 564       return $field->delete();
 565     }
 566
 567     return NULL;
 568   }
 569
 570   static function &htmlTypes() {
 571     static $htmlTypes = NULL;
 572     if (!$htmlTypes) {
 573       $htmlTypes = array(
 574         'Text' => ts('Text / Numeric Quantity'),
 575         'Select' => ts('Select'),
 576         'Radio' => ts('Radio'),
 577         'CheckBox' => ts('CheckBox'),
 578       );
 579     }
 580     return $htmlTypes;
 581   }
 582
 583   /**
 584    * Validate the priceset
 585    *
 586    * @param int $priceSetId, array $fields
 587    *
 588    * retrun the error string
 589    *
 590    * @access public
 591    * @static
 592    *
 593    */
 594
 595   public static function priceSetValidation($priceSetId, $fields, &$error, $allowNoneSelection = FALSE) {
 596     // check for at least one positive
 597     // amount price field should be selected.
 598     $priceField = new CRM_Price_DAO_PriceField();
 599     $priceField->price_set_id = $priceSetId;
 600     $priceField->find();
 601
 602     $priceFields = array();
 603
 604     if ($allowNoneSelection) {
 605       $noneSelectedPriceFields = array();
 606     }
 607
 608     while ($priceField->fetch()) {
 609       $key = "price_{$priceField->id}";
 610
 611       if ($allowNoneSelection) {
 612         if (array_key_exists($key, $fields)) {
 613           if ($fields[$key] == 0 && !$priceField->is_required) {
 614             $noneSelectedPriceFields[] = $priceField->id;
 615           }
 616         }
 617       }
 618
 619       if (!empty($fields[$key])) {
 620         $priceFields[$priceField->id] = $fields[$key];
 621       }
 622     }
 623
 624     if (!empty($priceFields)) {
 625       // we should has to have positive amount.
 626       $sql = "
 627 SELECT  id, html_type
 628 FROM  civicrm_price_field
 629 WHERE  id IN (" . implode(',', array_keys($priceFields)) . ')';
 630       $fieldDAO = CRM_Core_DAO::executeQuery($sql);
 631       $htmlTypes = array();
 632       while ($fieldDAO->fetch()) {
 633         $htmlTypes[$fieldDAO->id] = $fieldDAO->html_type;
 634       }
 635
 636       $selectedAmounts = array();
 637
 638       foreach ($htmlTypes as $fieldId => $type) {
 639         $options = array();
 640         CRM_Price_BAO_PriceFieldValue::getValues($fieldId, $options);
 641
 642         if (empty($options)) {
 643           continue;
 644         }
 645
 646         if ($type == 'Text') {
 647           foreach ($options as $opId => $option) {
 648             $selectedAmounts[$opId] = $priceFields[$fieldId] * $option['amount'];
 649             break;
 650           }
 651         }
 652         elseif (is_array($fields["price_{$fieldId}"])) {
 653           foreach (array_keys($fields["price_{$fieldId}"]) as $opId) {
 654             $selectedAmounts[$opId] = $options[$opId]['amount'];
 655           }
 656         }
 657         elseif (in_array($fields["price_{$fieldId}"], array_keys($options))) {
 658           $selectedAmounts[$fields["price_{$fieldId}"]] = $options[$fields["price_{$fieldId}"]]['amount'];
 659         }
 660       }
 661
 662       list($componentName) = explode(':', $fields['_qf_default']);
 663       // now we have all selected amount in hand.
 664       $totalAmount = array_sum($selectedAmounts);
 665       if ($totalAmount < 0) {
 666         $error['_qf_default'] = ts('%1 amount can not be less than zero. Please select the options accordingly.', array(1 => $componentName));
 667       }
 668     }
 669     else {
 670       if ($allowNoneSelection) {
 671         if (empty($noneSelectedPriceFields)) {
 672           $error['_qf_default'] = ts('Please select at least one option from price set.');
 673         }
 674       } else {
 675         $error['_qf_default'] = ts('Please select at least one option from price set.');
 676       }
 677     }
 678   }
 679 }
 680