CRM/Event/BAO/Query.php

   1 <?php
   2
   3 /*
   4  +--------------------------------------------------------------------+
   5  | CiviCRM version 4.5                                                |
   6  +--------------------------------------------------------------------+
   7  | Copyright CiviCRM LLC (c) 2004-2014                                |
   8  +--------------------------------------------------------------------+
   9  | This file is a part of CiviCRM.                                    |
  10  |                                                                    |
  11  | CiviCRM is free software; you can copy, modify, and distribute it  |
  12  | under the terms of the GNU Affero General Public License           |
  13  | Version 3, 19 November 2007 and the CiviCRM Licensing Exception.   |
  14  |                                                                    |
  15  | CiviCRM is distributed in the hope that it will be useful, but     |
  16  | WITHOUT ANY WARRANTY; without even the implied warranty of         |
  17  | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.               |
  18  | See the GNU Affero General Public License for more details.        |
  19  |                                                                    |
  20  | You should have received a copy of the GNU Affero General Public   |
  21  | License and the CiviCRM Licensing Exception along                  |
  22  | with this program; if not, contact CiviCRM LLC                     |
  23  | at info[AT]civicrm[DOT]org. If you have questions about the        |
  24  | GNU Affero General Public License or the licensing of CiviCRM,     |
  25  | see the CiviCRM license FAQ at http://civicrm.org/licensing        |
  26  +--------------------------------------------------------------------+
  27 */
  28
  29 /**
  30  *
  31  * @package CRM
  32  * @copyright CiviCRM LLC (c) 2004-2014
  33  * $Id$
  34  *
  35  */
  36 class CRM_Event_BAO_Query {
  37
  38   static function &getFields() {
  39     $fields = array();
  40     $fields = array_merge($fields, CRM_Event_DAO_Event::import());
  41     $fields = array_merge($fields, self::getParticipantFields());
  42     $fields = array_merge($fields, CRM_Core_DAO_Discount::export());
  43
  44     return $fields;
  45   }
  46
  47   static function &getParticipantFields() {
  48     $fields = CRM_Event_BAO_Participant::importableFields('Individual', TRUE, TRUE);
  49     return $fields;
  50   }
  51
  52   /**
  53    * build select for CiviEvent
  54    *
  55    * @return void
  56    * @access public
  57    */
  58   static function select(&$query) {
  59     if (($query->_mode & CRM_Contact_BAO_Query::MODE_EVENT) ||
  60       CRM_Contact_BAO_Query::componentPresent($query->_returnProperties, 'participant_')
  61     ) {
  62       $query->_select['participant_id'] = "civicrm_participant.id as participant_id";
  63       $query->_element['participant_id'] = 1;
  64       $query->_tables['civicrm_participant'] = $query->_whereTables['civicrm_participant'] = 1;
  65
  66       //add fee level
  67       if (!empty($query->_returnProperties['participant_fee_level'])) {
  68         $query->_select['participant_fee_level'] = "civicrm_participant.fee_level as participant_fee_level";
  69         $query->_element['participant_fee_level'] = 1;
  70       }
  71
  72       //add fee amount
  73       if (!empty($query->_returnProperties['participant_fee_amount'])) {
  74         $query->_select['participant_fee_amount'] = "civicrm_participant.fee_amount as participant_fee_amount";
  75         $query->_element['participant_fee_amount'] = 1;
  76       }
  77
  78       //add fee currency
  79       if (!empty($query->_returnProperties['participant_fee_currency'])) {
  80         $query->_select['participant_fee_currency'] = "civicrm_participant.fee_currency as participant_fee_currency";
  81         $query->_element['participant_fee_currency'] = 1;
  82       }
  83
  84       //add event title also if event id is select
  85       if (!empty($query->_returnProperties['event_id']) || !empty($query->_returnProperties['event_title'])) {
  86         $query->_select['event_id'] = "civicrm_event.id as event_id";
  87         $query->_select['event_title'] = "civicrm_event.title as event_title";
  88         $query->_element['event_id'] = 1;
  89         $query->_element['event_title'] = 1;
  90         $query->_tables['civicrm_event'] = 1;
  91         $query->_whereTables['civicrm_event'] = 1;
  92       }
  93
  94       //add start date / end date
  95       if (!empty($query->_returnProperties['event_start_date'])) {
  96         $query->_select['event_start_date'] = "civicrm_event.start_date as event_start_date";
  97         $query->_element['event_start_date'] = 1;
  98       }
  99
 100       if (!empty($query->_returnProperties['event_end_date'])) {
 101         $query->_select['event_end_date'] = "civicrm_event.end_date as event_end_date";
 102         $query->_element['event_end_date'] = 1;
 103       }
 104
 105       //event type
 106       if (!empty($query->_returnProperties['event_type'])) {
 107         $query->_select['event_type'] = "event_type.label as event_type";
 108         $query->_element['event_type'] = 1;
 109         $query->_tables['event_type'] = 1;
 110         $query->_whereTables['event_type'] = 1;
 111       }
 112
 113       if (!empty($query->_returnProperties['event_type_id'])) {
 114         $query->_select['event_type_id'] = "event_type.id as event_type_id";
 115         $query->_element['event_type_id'] = 1;
 116         $query->_tables['event_type'] = 1;
 117         $query->_whereTables['event_type'] = 1;
 118       }
 119
 120       //add status and status_id
 121       if (!empty($query->_returnProperties['participant_status']) || !empty($query->_returnProperties['participant_status_id'])) {
 122         $query->_select['participant_status'] = "participant_status.label as participant_status";
 123         $query->_select['participant_status_id'] = "participant_status.id as participant_status_id";
 124         $query->_element['participant_status_id'] = 1;
 125         $query->_element['participant_status'] = 1;
 126         $query->_tables['civicrm_participant'] = 1;
 127         $query->_tables['participant_status'] = 1;
 128         $query->_whereTables['civicrm_participant'] = 1;
 129         $query->_whereTables['participant_status'] = 1;
 130       }
 131
 132       //add participant_role and participant_role_id
 133       if (!empty($query->_returnProperties['participant_role']) || !empty($query->_returnProperties['participant_role_id'])) {
 134         $query->_select['participant_role'] = "participant_role.label as participant_role";
 135         $query->_select['participant_role_id'] = "civicrm_participant.role_id as participant_role_id";
 136         $query->_element['participant_role'] = 1;
 137         $query->_element['participant_role_id'] = 1;
 138         $query->_tables['civicrm_participant'] = 1;
 139         $query->_tables['participant_role'] = 1;
 140         $query->_whereTables['civicrm_participant'] = 1;
 141         $query->_whereTables['participant_role'] = 1;
 142         $query->_pseudoConstantsSelect['participant_role'] = array(
 143           'pseudoField' => 'participant_role',
 144           'idCol' => 'participant_role_id',
 145         );
 146       }
 147
 148       //add register date
 149       if (!empty($query->_returnProperties['participant_register_date'])) {
 150         $query->_select['participant_register_date'] = "civicrm_participant.register_date as participant_register_date";
 151         $query->_element['participant_register_date'] = 1;
 152       }
 153
 154       //add source
 155       if (!empty($query->_returnProperties['participant_source'])) {
 156         $query->_select['participant_source'] = "civicrm_participant.source as participant_source";
 157         $query->_element['participant_source'] = 1;
 158         $query->_tables['civicrm_participant'] = $query->_whereTables['civicrm_participant'] = 1;
 159       }
 160
 161       //participant note
 162       if (!empty($query->_returnProperties['participant_note'])) {
 163         $query->_select['participant_note'] = "civicrm_note.note as participant_note";
 164         $query->_element['participant_note'] = 1;
 165         $query->_tables['participant_note'] = 1;
 166         $query->_whereTables['civicrm_note'] = 1;
 167       }
 168
 169       if (!empty($query->_returnProperties['participant_is_pay_later'])) {
 170         $query->_select['participant_is_pay_later'] = "civicrm_participant.is_pay_later as participant_is_pay_later";
 171         $query->_element['participant_is_pay_later'] = 1;
 172       }
 173
 174       if (!empty($query->_returnProperties['participant_is_test'])) {
 175         $query->_select['participant_is_test'] = "civicrm_participant.is_test as participant_is_test";
 176         $query->_element['participant_is_test'] = 1;
 177       }
 178
 179       if (!empty($query->_returnProperties['participant_registered_by_id'])) {
 180         $query->_select['participant_registered_by_id'] = "civicrm_participant.registered_by_id as participant_registered_by_id";
 181         $query->_element['participant_registered_by_id'] = 1;
 182       }
 183
 184       // get discount name
 185       if (!empty($query->_returnProperties['participant_discount_name'])) {
 186         $query->_select['participant_discount_name'] = "discount_name.title as participant_discount_name";
 187         $query->_element['participant_discount_name'] = 1;
 188         $query->_tables['civicrm_discount'] = 1;
 189         $query->_tables['participant_discount_name'] = 1;
 190         $query->_whereTables['civicrm_discount'] = 1;
 191         $query->_whereTables['participant_discount_name'] = 1;
 192       }
 193
 194       //carry campaign id to selectors.
 195       if (!empty($query->_returnProperties['participant_campaign_id'])) {
 196         $query->_select['participant_campaign_id'] = 'civicrm_participant.campaign_id as participant_campaign_id';
 197         $query->_element['participant_campaign_id'] = 1;
 198       }
 199     }
 200   }
 201
 202   static function where(&$query) {
 203     $grouping = NULL;
 204     foreach (array_keys($query->_params) as $id) {
 205       if (empty($query->_params[$id][0])) {
 206         continue;
 207       }
 208       if (substr($query->_params[$id][0], 0, 6) == 'event_' ||
 209         substr($query->_params[$id][0], 0, 12) == 'participant_'
 210       ) {
 211         if ($query->_mode == CRM_Contact_BAO_QUERY::MODE_CONTACTS) {
 212           $query->_useDistinct = TRUE;
 213         }
 214         $grouping = $query->_params[$id][3];
 215         self::whereClauseSingle($query->_params[$id], $query);
 216       }
 217     }
 218   }
 219
 220   static function whereClauseSingle(&$values, &$query) {
 221     list($name, $op, $value, $grouping, $wildcard) = $values;
 222     switch ($name) {
 223       case 'event_start_date_low':
 224       case 'event_start_date_high':
 225         $query->dateQueryBuilder($values,
 226           'civicrm_event', 'event_start_date', 'start_date', 'Start Date'
 227         );
 228         return;
 229
 230       case 'event_end_date_low':
 231       case 'event_end_date_high':
 232         $query->dateQueryBuilder($values,
 233           'civicrm_event', 'event_end_date', 'end_date', 'End Date'
 234         );
 235         return;
 236
 237       case 'event_id':
 238         $query->_where[$grouping][] = "civicrm_event.id $op {$value}";
 239         $eventTitle = CRM_Core_DAO::getFieldValue('CRM_Event_DAO_Event', $value, 'title');
 240         $query->_qill[$grouping][] = ts('Event') . " $op {$eventTitle}";
 241         $query->_tables['civicrm_event'] = $query->_whereTables['civicrm_event'] = 1;
 242         return;
 243
 244       case 'event_type_id':
 245
 246         $eventTypes = CRM_Core_OptionGroup::values("event_type");
 247         $query->_where[$grouping][] = "civicrm_participant.event_id = civicrm_event.id and civicrm_event.event_type_id = '{$value}'";
 248         $query->_qill[$grouping][] = ts('Event Type - %1', array(1 => $eventTypes[$value]));
 249         $query->_tables['civicrm_event'] = $query->_whereTables['civicrm_event'] = 1;
 250         return;
 251
 252       case 'participant_test':
 253         // We dont want to include all tests for sql OR CRM-7827
 254         if (!$value || $query->getOperator() != 'OR') {
 255           $query->_where[$grouping][] = CRM_Contact_BAO_Query::buildClause("civicrm_participant.is_test",
 256             $op,
 257             $value,
 258             "Boolean"
 259           );
 260           if ($value) {
 261             $query->_qill[$grouping][] = ts("Participant is a Test");
 262           }
 263           $query->_tables['civicrm_participant'] = $query->_whereTables['civicrm_participant'] = 1;
 264         }
 265         return;
 266
 267       case 'participant_fee_id':
 268         $feeLabel = CRM_Core_DAO::getFieldValue('CRM_Price_DAO_PriceFieldValue', $value, 'label');
 269         $feeLabel = CRM_Core_DAO::escapeString(trim($feeLabel));
 270         if ($value) {
 271           $query->_where[$grouping][] = "civicrm_participant.fee_level LIKE '%$feeLabel%'";
 272           $query->_qill[$grouping][] = ts("Fee level") . " contains $feeLabel";
 273         }
 274         $query->_tables['civicrm_participant'] = $query->_whereTables['civicrm_participant'] = 1;
 275         return;
 276
 277       case 'participant_fee_amount':
 278         $query->_where[$grouping][] = CRM_Contact_BAO_Query::buildClause("civicrm_participant.fee_amount",
 279           $op,
 280           $value,
 281           "Money"
 282         );
 283         if ($value) {
 284           $query->_qill[$grouping][] = ts("Fee Amount") . " $op $value";
 285         }
 286         $query->_tables['civicrm_participant'] = $query->_whereTables['civicrm_participant'] = 1;
 287         return;
 288
 289       case 'participant_fee_amount_high':
 290       case 'participant_fee_amount_low':
 291         $query->numberRangeBuilder($values,
 292           'civicrm_participant', 'participant_fee_amount', 'fee_amount', 'Fee Amount'
 293         );
 294         return;
 295
 296       case 'participant_pay_later':
 297         $query->_where[$grouping][] = CRM_Contact_BAO_Query::buildClause("civicrm_participant.is_pay_later",
 298           $op,
 299           $value,
 300           "Boolean"
 301         );
 302         $query->_qill[$grouping][] = $value ? ts("Participant is Pay Later") : ts("Participant is not Pay Later");
 303         $query->_tables['civicrm_participant'] = $query->_whereTables['civicrm_participant'] = 1;
 304         return;
 305
 306       case 'participant_status':
 307       case 'participant_status_id':
 308         $val = array();
 309         if (is_array($value)) {
 310           foreach ($value as $k => $v) {
 311             if ($v) {
 312               $val[$k] = $k;
 313             }
 314           }
 315           $status = implode(',', $val);
 316         }
 317         else {
 318           $status = $value;
 319         }
 320
 321         if (count($val) > 1) {
 322           $op = 'IN';
 323           $status = "({$status})";
 324         }
 325
 326         $statusTypes = CRM_Event_PseudoConstant::participantStatus();
 327         $names = array();
 328
 329         if (!empty($val)) {
 330           foreach ($val as $id => $dontCare) {
 331             $names[] = $statusTypes[$id];
 332           }
 333         }
 334         else {
 335           $names[] = $statusTypes[$value];
 336         }
 337
 338         $query->_qill[$grouping][] = ts('Participant Status %1', array(1 => $op)) . ' ' . implode(' ' . ts('or') . ' ', $names);
 339
 340         $query->_where[$grouping][] = CRM_Contact_BAO_Query::buildClause("civicrm_participant.status_id",
 341           $op,
 342           $status,
 343           "Integer"
 344         );
 345         $query->_tables['civicrm_participant'] = $query->_whereTables['civicrm_participant'] = 1;
 346         return;
 347
 348       case 'participant_role':
 349       case 'participant_role_id':
 350         $val = array();
 351         if (is_array($value)) {
 352           foreach ($value as $k => $v) {
 353             if ($v) {
 354               $val[$k] = $k;
 355             }
 356           }
 357         }
 358         else {
 359           $val = array($value => 1);
 360         }
 361
 362         $roleTypes = CRM_Event_PseudoConstant::participantRole();
 363
 364         $names = array();
 365         foreach ($val as $id => $dontCare) {
 366           $names[] = $roleTypes[$id];
 367         }
 368
 369         if (!empty($names)) {
 370           $query->_qill[$grouping][] =
 371             ts('Participant Role %1', array(1 => $op)) .
 372             ' ' .
 373             implode(' ' . ts('or') . ' ', $names);
 374           $query->_where[$grouping][] =
 375             " civicrm_participant.role_id REGEXP '[[:<:]]" .
 376             implode('[[:>:]]|[[:<:]]', array_keys($val)) .
 377             "[[:>:]]' ";
 378
 379           $query->_tables['civicrm_participant'] =
 380             $query->_whereTables['civicrm_participant'] = 1;
 381         }
 382         return;
 383
 384       case 'participant_source':
 385         $query->_where[$grouping][] = CRM_Contact_BAO_Query::buildClause("civicrm_participant.source",
 386           $op,
 387           $value,
 388           "String"
 389         );
 390         $query->_qill[$grouping][] = ts("Participant Source") . " $op $value";
 391         $query->_tables['civicrm_participant'] = $query->_whereTables['civicrm_participant'] = 1;
 392         return;
 393
 394       case 'participant_register_date':
 395         $query->dateQueryBuilder($values,
 396           'civicrm_participant', 'participant_register_date', 'register_date', 'Register Date'
 397         );
 398         return;
 399
 400       case 'participant_id':
 401         $query->_where[$grouping][] = "civicrm_participant.id $op $value";
 402         $query->_tables['civicrm_participant'] = $query->_whereTables['civicrm_participant'] = 1;
 403         return;
 404
 405       case 'event_id':
 406         $query->_where[$grouping][] = CRM_Contact_BAO_Query::buildClause("civicrm_event.id",
 407           $op,
 408           $value,
 409           "Integer"
 410         );
 411         $query->_tables['civicrm_event'] = $query->_whereTables['civicrm_event'] = 1;
 412         $title = CRM_Core_DAO::getFieldValue('CRM_Event_DAO_Event', $value, "title");
 413         $query->_qill[$grouping][] = ts('Event') . " $op $value";
 414         return;
 415
 416       case 'participant_contact_id':
 417         $query->_where[$grouping][] = CRM_Contact_BAO_Query::buildClause("civicrm_participant.contact_id",
 418           $op,
 419           $value,
 420           "Integer"
 421         );
 422         $query->_tables['civicrm_participant'] = $query->_whereTables['civicrm_participant'] = 1;
 423         return;
 424
 425       case 'event_is_public':
 426         $query->_where[$grouping][] = CRM_Contact_BAO_Query::buildClause("civicrm_event.is_public",
 427           $op,
 428           $value,
 429           "Integer"
 430         );
 431         $query->_tables['civicrm_event'] = $query->_whereTables['civicrm_event'] = 1;
 432         return;
 433
 434       case 'participant_campaign_id':
 435         $campParams = array(
 436           'op' => $op,
 437           'campaign' => $value,
 438           'grouping' => $grouping,
 439           'tableName' => 'civicrm_participant',
 440         );
 441         CRM_Campaign_BAO_Query::componentSearchClause($campParams, $query);
 442         return;
 443     }
 444   }
 445
 446   static function from($name, $mode, $side) {
 447     $from = NULL;
 448     switch ($name) {
 449       case 'civicrm_participant':
 450         $from = " LEFT JOIN civicrm_participant ON civicrm_participant.contact_id = contact_a.id ";
 451         break;
 452
 453       case 'civicrm_event':
 454         $from = " INNER JOIN civicrm_event ON civicrm_participant.event_id = civicrm_event.id ";
 455         break;
 456
 457       case 'event_type':
 458         $from = " $side JOIN civicrm_option_group option_group_event_type ON (option_group_event_type.name = 'event_type')";
 459         $from .= " $side JOIN civicrm_option_value event_type ON (civicrm_event.event_type_id = event_type.value AND option_group_event_type.id = event_type.option_group_id ) ";
 460         break;
 461
 462       case 'participant_note':
 463         $from .= " $side JOIN civicrm_note ON ( civicrm_note.entity_table = 'civicrm_participant' AND
 464                                                         civicrm_participant.id = civicrm_note.entity_id )";
 465         break;
 466
 467       case 'participant_status':
 468         $from .= " $side JOIN civicrm_participant_status_type participant_status ON (civicrm_participant.status_id = participant_status.id) ";
 469         break;
 470
 471       case 'participant_role':
 472         $from = " $side JOIN civicrm_option_group option_group_participant_role ON (option_group_participant_role.name = 'participant_role')";
 473         $from .= " $side JOIN civicrm_option_value participant_role ON (civicrm_participant.role_id = participant_role.value
 474                                AND option_group_participant_role.id = participant_role.option_group_id ) ";
 475         break;
 476
 477       case 'participant_discount_name':
 478         $from = " $side JOIN civicrm_discount discount ON ( civicrm_participant.discount_id = discount.id )";
 479         $from .= " $side JOIN civicrm_option_group discount_name ON ( discount_name.id = discount.price_set_id ) ";
 480         break;
 481     }
 482     return $from;
 483   }
 484
 485   /**
 486    * getter for the qill object
 487    *
 488    * @return string
 489    * @access public
 490    */
 491   function qill() {
 492     return (isset($this->_qill)) ? $this->_qill : "";
 493   }
 494
 495   static function defaultReturnProperties($mode,
 496     $includeCustomFields = TRUE
 497   ) {
 498     $properties = NULL;
 499     if ($mode & CRM_Contact_BAO_Query::MODE_EVENT) {
 500       $properties = array(
 501         'contact_type' => 1,
 502         'contact_sub_type' => 1,
 503         'sort_name' => 1,
 504         'display_name' => 1,
 505         'event_id' => 1,
 506         'event_title' => 1,
 507         'event_start_date' => 1,
 508         'event_end_date' => 1,
 509         'event_type' => 1,
 510         'participant_id' => 1,
 511         'participant_status' => 1,
 512         'participant_role_id' => 1,
 513         'participant_note' => 1,
 514         'participant_register_date' => 1,
 515         'participant_source' => 1,
 516         'participant_fee_level' => 1,
 517         'participant_is_test' => 1,
 518         'participant_is_pay_later' => 1,
 519         'participant_fee_amount' => 1,
 520         'participant_discount_name' => 1,
 521         'participant_fee_currency' => 1,
 522         'participant_registered_by_id' => 1,
 523         'participant_campaign_id' => 1,
 524       );
 525
 526       if ($includeCustomFields) {
 527         // also get all the custom participant properties
 528         $fields = CRM_Core_BAO_CustomField::getFieldsForImport('Participant');
 529         if (!empty($fields)) {
 530           foreach ($fields as $name => $dontCare) {
 531             $properties[$name] = 1;
 532           }
 533         }
 534       }
 535     }
 536
 537     return $properties;
 538   }
 539
 540   /**
 541    * @param CRM_Core_Form $form
 542    */
 543   static function buildSearchForm(&$form) {
 544     $dataURLEventFee = CRM_Utils_System::url('civicrm/ajax/eventFee',
 545       "reset=1",
 546       FALSE, NULL, FALSE
 547     );
 548
 549     $form->assign('dataURLEventFee', $dataURLEventFee);
 550
 551     $eventId = $form->addEntityRef('event_id', ts('Event Name'), array(
 552         'entity' => 'event',
 553         'placeholder' => ts('- any -'),
 554         'select' => array('minimumInputLength' => 0),
 555       )
 556     );
 557     $eventType = $form->addEntityRef('event_type_id', ts('Event Type'), array(
 558         'entity' => 'option_value',
 559         'placeholder' => ts('- any -'),
 560         'select' => array('minimumInputLength' => 0),
 561         'api' => array(
 562           'params' => array('option_group_id' => 'event_type'),
 563         ),
 564       )
 565     );
 566     $form->add('text', 'participant_fee_id', ts('Fee Level'), array('class' => 'big crm-ajax-select'));
 567
 568     CRM_Core_Form_Date::buildDateRange($form, 'event', 1, '_start_date_low', '_end_date_high', ts('From'), FALSE);
 569
 570     $status = CRM_Event_PseudoConstant::participantStatus(NULL, NULL, 'label');
 571     asort($status);
 572     foreach ($status as $id => $Name) {
 573       $form->_participantStatus = &$form->addElement('checkbox', "participant_status_id[$id]", NULL, $Name);
 574     }
 575
 576     foreach (CRM_Event_PseudoConstant::participantRole() as $rId => $rName) {
 577       $form->_participantRole = &$form->addElement('checkbox', "participant_role_id[$rId]", NULL, $rName);
 578     }
 579
 580     $form->addYesNo('participant_test', ts('Participant is a Test?'), TRUE);
 581     $form->addYesNo('participant_pay_later', ts('Participant is Pay Later?'), TRUE);
 582     $form->addElement('text', 'participant_fee_amount_low', ts('From'), array('size' => 8, 'maxlength' => 8));
 583     $form->addElement('text', 'participant_fee_amount_high', ts('To'), array('size' => 8, 'maxlength' => 8));
 584
 585     $form->addRule('participant_fee_amount_low', ts('Please enter a valid money value.'), 'money');
 586     $form->addRule('participant_fee_amount_high', ts('Please enter a valid money value.'), 'money');
 587     // add all the custom  searchable fields
 588     $extends = array('Participant', 'Event');
 589     $groupDetails = CRM_Core_BAO_CustomGroup::getGroupDetail(NULL, TRUE, $extends);
 590     if ($groupDetails) {
 591       $form->assign('participantGroupTree', $groupDetails);
 592       foreach ($groupDetails as $group) {
 593         foreach ($group['fields'] as $field) {
 594           $fieldId = $field['id'];
 595           $elementName = 'custom_' . $fieldId;
 596           CRM_Core_BAO_CustomField::addQuickFormElement($form,
 597             $elementName,
 598             $fieldId,
 599             FALSE, FALSE, TRUE
 600           );
 601         }
 602       }
 603     }
 604
 605     CRM_Campaign_BAO_Campaign::addCampaignInComponentSearch($form, 'participant_campaign_id');
 606
 607     $form->assign('validCiviEvent', TRUE);
 608     $form->setDefaults(array('participant_test' => 0));
 609   }
 610
 611   static function searchAction(&$row, $id) {}
 612
 613   static function tableNames(&$tables) {
 614     //add participant table
 615     if (!empty($tables['civicrm_event'])) {
 616       $tables = array_merge(array('civicrm_participant' => 1), $tables);
 617     }
 618   }
 619 }
 620