Merge pull request #3367 from kirkatcaat/empty-labels-on-profile-fields
[civicrm-core.git] / 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 /**
39 * @return array
40 */
41 static function &getFields() {
42 $fields = array();
43 $fields = array_merge($fields, CRM_Event_DAO_Event::import());
44 $fields = array_merge($fields, self::getParticipantFields());
45 $fields = array_merge($fields, CRM_Core_DAO_Discount::export());
46
47 return $fields;
48 }
49
50 /**
51 * @return array
52 */
53 static function &getParticipantFields() {
54 $fields = CRM_Event_BAO_Participant::importableFields('Individual', TRUE, TRUE);
55 return $fields;
56 }
57
58 /**
59 * build select for CiviEvent
60 *
61 * @param $query
62 *
63 * @return void
64 * @access public
65 */
66 static function select(&$query) {
67 if (($query->_mode & CRM_Contact_BAO_Query::MODE_EVENT) ||
68 CRM_Contact_BAO_Query::componentPresent($query->_returnProperties, 'participant_')
69 ) {
70 $query->_select['participant_id'] = "civicrm_participant.id as participant_id";
71 $query->_element['participant_id'] = 1;
72 $query->_tables['civicrm_participant'] = $query->_whereTables['civicrm_participant'] = 1;
73
74 //add fee level
75 if (!empty($query->_returnProperties['participant_fee_level'])) {
76 $query->_select['participant_fee_level'] = "civicrm_participant.fee_level as participant_fee_level";
77 $query->_element['participant_fee_level'] = 1;
78 }
79
80 //add fee amount
81 if (!empty($query->_returnProperties['participant_fee_amount'])) {
82 $query->_select['participant_fee_amount'] = "civicrm_participant.fee_amount as participant_fee_amount";
83 $query->_element['participant_fee_amount'] = 1;
84 }
85
86 //add fee currency
87 if (!empty($query->_returnProperties['participant_fee_currency'])) {
88 $query->_select['participant_fee_currency'] = "civicrm_participant.fee_currency as participant_fee_currency";
89 $query->_element['participant_fee_currency'] = 1;
90 }
91
92 //add event title also if event id is select
93 if (!empty($query->_returnProperties['event_id']) || !empty($query->_returnProperties['event_title'])) {
94 $query->_select['event_id'] = "civicrm_event.id as event_id";
95 $query->_select['event_title'] = "civicrm_event.title as event_title";
96 $query->_element['event_id'] = 1;
97 $query->_element['event_title'] = 1;
98 $query->_tables['civicrm_event'] = 1;
99 $query->_whereTables['civicrm_event'] = 1;
100 }
101
102 //add start date / end date
103 if (!empty($query->_returnProperties['event_start_date'])) {
104 $query->_select['event_start_date'] = "civicrm_event.start_date as event_start_date";
105 $query->_element['event_start_date'] = 1;
106 }
107
108 if (!empty($query->_returnProperties['event_end_date'])) {
109 $query->_select['event_end_date'] = "civicrm_event.end_date as event_end_date";
110 $query->_element['event_end_date'] = 1;
111 }
112
113 //event type
114 if (!empty($query->_returnProperties['event_type'])) {
115 $query->_select['event_type'] = "event_type.label as event_type";
116 $query->_element['event_type'] = 1;
117 $query->_tables['event_type'] = 1;
118 $query->_whereTables['event_type'] = 1;
119 }
120
121 if (!empty($query->_returnProperties['event_type_id'])) {
122 $query->_select['event_type_id'] = "event_type.id as event_type_id";
123 $query->_element['event_type_id'] = 1;
124 $query->_tables['event_type'] = 1;
125 $query->_whereTables['event_type'] = 1;
126 }
127
128 //add status and status_id
129 if (!empty($query->_returnProperties['participant_status']) || !empty($query->_returnProperties['participant_status_id'])) {
130 $query->_select['participant_status'] = "participant_status.label as participant_status";
131 $query->_select['participant_status_id'] = "participant_status.id as participant_status_id";
132 $query->_element['participant_status_id'] = 1;
133 $query->_element['participant_status'] = 1;
134 $query->_tables['civicrm_participant'] = 1;
135 $query->_tables['participant_status'] = 1;
136 $query->_whereTables['civicrm_participant'] = 1;
137 $query->_whereTables['participant_status'] = 1;
138 }
139
140 //add participant_role and participant_role_id
141 if (!empty($query->_returnProperties['participant_role']) || !empty($query->_returnProperties['participant_role_id'])) {
142 $query->_select['participant_role'] = "participant_role.label as participant_role";
143 $query->_select['participant_role_id'] = "civicrm_participant.role_id as participant_role_id";
144 $query->_element['participant_role'] = 1;
145 $query->_element['participant_role_id'] = 1;
146 $query->_tables['civicrm_participant'] = 1;
147 $query->_tables['participant_role'] = 1;
148 $query->_whereTables['civicrm_participant'] = 1;
149 $query->_whereTables['participant_role'] = 1;
150 $query->_pseudoConstantsSelect['participant_role'] = array(
151 'pseudoField' => 'participant_role',
152 'idCol' => 'participant_role_id',
153 );
154 }
155
156 //add register date
157 if (!empty($query->_returnProperties['participant_register_date'])) {
158 $query->_select['participant_register_date'] = "civicrm_participant.register_date as participant_register_date";
159 $query->_element['participant_register_date'] = 1;
160 }
161
162 //add source
163 if (!empty($query->_returnProperties['participant_source'])) {
164 $query->_select['participant_source'] = "civicrm_participant.source as participant_source";
165 $query->_element['participant_source'] = 1;
166 $query->_tables['civicrm_participant'] = $query->_whereTables['civicrm_participant'] = 1;
167 }
168
169 //participant note
170 if (!empty($query->_returnProperties['participant_note'])) {
171 $query->_select['participant_note'] = "civicrm_note.note as participant_note";
172 $query->_element['participant_note'] = 1;
173 $query->_tables['participant_note'] = 1;
174 $query->_whereTables['civicrm_note'] = 1;
175 }
176
177 if (!empty($query->_returnProperties['participant_is_pay_later'])) {
178 $query->_select['participant_is_pay_later'] = "civicrm_participant.is_pay_later as participant_is_pay_later";
179 $query->_element['participant_is_pay_later'] = 1;
180 }
181
182 if (!empty($query->_returnProperties['participant_is_test'])) {
183 $query->_select['participant_is_test'] = "civicrm_participant.is_test as participant_is_test";
184 $query->_element['participant_is_test'] = 1;
185 }
186
187 if (!empty($query->_returnProperties['participant_registered_by_id'])) {
188 $query->_select['participant_registered_by_id'] = "civicrm_participant.registered_by_id as participant_registered_by_id";
189 $query->_element['participant_registered_by_id'] = 1;
190 }
191
192 // get discount name
193 if (!empty($query->_returnProperties['participant_discount_name'])) {
194 $query->_select['participant_discount_name'] = "discount_name.title as participant_discount_name";
195 $query->_element['participant_discount_name'] = 1;
196 $query->_tables['civicrm_discount'] = 1;
197 $query->_tables['participant_discount_name'] = 1;
198 $query->_whereTables['civicrm_discount'] = 1;
199 $query->_whereTables['participant_discount_name'] = 1;
200 }
201
202 //carry campaign id to selectors.
203 if (!empty($query->_returnProperties['participant_campaign_id'])) {
204 $query->_select['participant_campaign_id'] = 'civicrm_participant.campaign_id as participant_campaign_id';
205 $query->_element['participant_campaign_id'] = 1;
206 }
207 }
208 }
209
210 /**
211 * @param $query
212 */
213 static function where(&$query) {
214 $grouping = NULL;
215 foreach (array_keys($query->_params) as $id) {
216 if (empty($query->_params[$id][0])) {
217 continue;
218 }
219 if (substr($query->_params[$id][0], 0, 6) == 'event_' ||
220 substr($query->_params[$id][0], 0, 12) == 'participant_'
221 ) {
222 if ($query->_mode == CRM_Contact_BAO_QUERY::MODE_CONTACTS) {
223 $query->_useDistinct = TRUE;
224 }
225 $grouping = $query->_params[$id][3];
226 self::whereClauseSingle($query->_params[$id], $query);
227 }
228 }
229 }
230
231 /**
232 * @param $values
233 * @param $query
234 */
235 static function whereClauseSingle(&$values, &$query) {
236 list($name, $op, $value, $grouping, $wildcard) = $values;
237 switch ($name) {
238 case 'event_start_date_low':
239 case 'event_start_date_high':
240 $query->dateQueryBuilder($values,
241 'civicrm_event', 'event_start_date', 'start_date', 'Start Date'
242 );
243 return;
244
245 case 'event_end_date_low':
246 case 'event_end_date_high':
247 $query->dateQueryBuilder($values,
248 'civicrm_event', 'event_end_date', 'end_date', 'End Date'
249 );
250 return;
251
252 case 'event_id':
253 $query->_where[$grouping][] = "civicrm_event.id $op {$value}";
254 $eventTitle = CRM_Core_DAO::getFieldValue('CRM_Event_DAO_Event', $value, 'title');
255 $query->_qill[$grouping][] = ts('Event') . " $op {$eventTitle}";
256 $query->_tables['civicrm_event'] = $query->_whereTables['civicrm_event'] = 1;
257 return;
258
259 case 'event_type_id':
260
261 $eventTypes = CRM_Core_OptionGroup::values("event_type");
262 $query->_where[$grouping][] = "civicrm_participant.event_id = civicrm_event.id and civicrm_event.event_type_id = '{$value}'";
263 $query->_qill[$grouping][] = ts('Event Type - %1', array(1 => $eventTypes[$value]));
264 $query->_tables['civicrm_event'] = $query->_whereTables['civicrm_event'] = 1;
265 return;
266
267 case 'participant_test':
268 // We dont want to include all tests for sql OR CRM-7827
269 if (!$value || $query->getOperator() != 'OR') {
270 $query->_where[$grouping][] = CRM_Contact_BAO_Query::buildClause("civicrm_participant.is_test",
271 $op,
272 $value,
273 "Boolean"
274 );
275 if ($value) {
276 $query->_qill[$grouping][] = ts("Participant is a Test");
277 }
278 $query->_tables['civicrm_participant'] = $query->_whereTables['civicrm_participant'] = 1;
279 }
280 return;
281
282 case 'participant_fee_id':
283 $feeLabel = CRM_Core_DAO::getFieldValue('CRM_Price_DAO_PriceFieldValue', $value, 'label');
284 $feeLabel = CRM_Core_DAO::escapeString(trim($feeLabel));
285 if ($value) {
286 $query->_where[$grouping][] = "civicrm_participant.fee_level LIKE '%$feeLabel%'";
287 $query->_qill[$grouping][] = ts("Fee level") . " contains $feeLabel";
288 }
289 $query->_tables['civicrm_participant'] = $query->_whereTables['civicrm_participant'] = 1;
290 return;
291
292 case 'participant_fee_amount':
293 $query->_where[$grouping][] = CRM_Contact_BAO_Query::buildClause("civicrm_participant.fee_amount",
294 $op,
295 $value,
296 "Money"
297 );
298 if ($value) {
299 $query->_qill[$grouping][] = ts("Fee Amount") . " $op $value";
300 }
301 $query->_tables['civicrm_participant'] = $query->_whereTables['civicrm_participant'] = 1;
302 return;
303
304 case 'participant_fee_amount_high':
305 case 'participant_fee_amount_low':
306 $query->numberRangeBuilder($values,
307 'civicrm_participant', 'participant_fee_amount', 'fee_amount', 'Fee Amount'
308 );
309 return;
310
311 case 'participant_pay_later':
312 $query->_where[$grouping][] = CRM_Contact_BAO_Query::buildClause("civicrm_participant.is_pay_later",
313 $op,
314 $value,
315 "Boolean"
316 );
317 $query->_qill[$grouping][] = $value ? ts("Participant is Pay Later") : ts("Participant is not Pay Later");
318 $query->_tables['civicrm_participant'] = $query->_whereTables['civicrm_participant'] = 1;
319 return;
320
321 case 'participant_status':
322 case 'participant_status_id':
323 $val = array();
324 if (is_array($value)) {
325 foreach ($value as $k => $v) {
326 if ($v) {
327 $val[$k] = $k;
328 }
329 }
330 $status = implode(',', $val);
331 }
332 else {
333 $status = $value;
334 }
335
336 if (count($val) > 1) {
337 $op = 'IN';
338 $status = "({$status})";
339 }
340
341 $statusTypes = CRM_Event_PseudoConstant::participantStatus();
342 $names = array();
343
344 if (!empty($val)) {
345 foreach ($val as $id => $dontCare) {
346 $names[] = $statusTypes[$id];
347 }
348 }
349 else {
350 $names[] = $statusTypes[$value];
351 }
352
353 $query->_qill[$grouping][] = ts('Participant Status %1', array(1 => $op)) . ' ' . implode(' ' . ts('or') . ' ', $names);
354
355 $query->_where[$grouping][] = CRM_Contact_BAO_Query::buildClause("civicrm_participant.status_id",
356 $op,
357 $status,
358 "Integer"
359 );
360 $query->_tables['civicrm_participant'] = $query->_whereTables['civicrm_participant'] = 1;
361 return;
362
363 case 'participant_role':
364 case 'participant_role_id':
365 $val = array();
366 if (is_array($value)) {
367 foreach ($value as $k => $v) {
368 if ($v) {
369 $val[$k] = $k;
370 }
371 }
372 }
373 else {
374 $val = array($value => 1);
375 }
376
377 $roleTypes = CRM_Event_PseudoConstant::participantRole();
378
379 $names = array();
380 foreach ($val as $id => $dontCare) {
381 $names[] = $roleTypes[$id];
382 }
383
384 if (!empty($names)) {
385 $query->_qill[$grouping][] =
386 ts('Participant Role %1', array(1 => $op)) .
387 ' ' .
388 implode(' ' . ts('or') . ' ', $names);
389 $query->_where[$grouping][] =
390 " civicrm_participant.role_id REGEXP '[[:<:]]" .
391 implode('[[:>:]]|[[:<:]]', array_keys($val)) .
392 "[[:>:]]' ";
393
394 $query->_tables['civicrm_participant'] =
395 $query->_whereTables['civicrm_participant'] = 1;
396 }
397 return;
398
399 case 'participant_source':
400 $query->_where[$grouping][] = CRM_Contact_BAO_Query::buildClause("civicrm_participant.source",
401 $op,
402 $value,
403 "String"
404 );
405 $query->_qill[$grouping][] = ts("Participant Source") . " $op $value";
406 $query->_tables['civicrm_participant'] = $query->_whereTables['civicrm_participant'] = 1;
407 return;
408
409 case 'participant_register_date':
410 $query->dateQueryBuilder($values,
411 'civicrm_participant', 'participant_register_date', 'register_date', 'Register Date'
412 );
413 return;
414
415 case 'participant_id':
416 $query->_where[$grouping][] = "civicrm_participant.id $op $value";
417 $query->_tables['civicrm_participant'] = $query->_whereTables['civicrm_participant'] = 1;
418 return;
419
420 case 'event_id':
421 $query->_where[$grouping][] = CRM_Contact_BAO_Query::buildClause("civicrm_event.id",
422 $op,
423 $value,
424 "Integer"
425 );
426 $query->_tables['civicrm_event'] = $query->_whereTables['civicrm_event'] = 1;
427 $title = CRM_Core_DAO::getFieldValue('CRM_Event_DAO_Event', $value, "title");
428 $query->_qill[$grouping][] = ts('Event') . " $op $value";
429 return;
430
431 case 'participant_contact_id':
432 $query->_where[$grouping][] = CRM_Contact_BAO_Query::buildClause("civicrm_participant.contact_id",
433 $op,
434 $value,
435 "Integer"
436 );
437 $query->_tables['civicrm_participant'] = $query->_whereTables['civicrm_participant'] = 1;
438 return;
439
440 case 'event_is_public':
441 $query->_where[$grouping][] = CRM_Contact_BAO_Query::buildClause("civicrm_event.is_public",
442 $op,
443 $value,
444 "Integer"
445 );
446 $query->_tables['civicrm_event'] = $query->_whereTables['civicrm_event'] = 1;
447 return;
448
449 case 'participant_campaign_id':
450 $campParams = array(
451 'op' => $op,
452 'campaign' => $value,
453 'grouping' => $grouping,
454 'tableName' => 'civicrm_participant',
455 );
456 CRM_Campaign_BAO_Query::componentSearchClause($campParams, $query);
457 return;
458 }
459 }
460
461 /**
462 * @param $name
463 * @param $mode
464 * @param $side
465 *
466 * @return null|string
467 */
468 static function from($name, $mode, $side) {
469 $from = NULL;
470 switch ($name) {
471 case 'civicrm_participant':
472 $from = " LEFT JOIN civicrm_participant ON civicrm_participant.contact_id = contact_a.id ";
473 break;
474
475 case 'civicrm_event':
476 $from = " INNER JOIN civicrm_event ON civicrm_participant.event_id = civicrm_event.id ";
477 break;
478
479 case 'event_type':
480 $from = " $side JOIN civicrm_option_group option_group_event_type ON (option_group_event_type.name = 'event_type')";
481 $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 ) ";
482 break;
483
484 case 'participant_note':
485 $from .= " $side JOIN civicrm_note ON ( civicrm_note.entity_table = 'civicrm_participant' AND
486 civicrm_participant.id = civicrm_note.entity_id )";
487 break;
488
489 case 'participant_status':
490 $from .= " $side JOIN civicrm_participant_status_type participant_status ON (civicrm_participant.status_id = participant_status.id) ";
491 break;
492
493 case 'participant_role':
494 $from = " $side JOIN civicrm_option_group option_group_participant_role ON (option_group_participant_role.name = 'participant_role')";
495 $from .= " $side JOIN civicrm_option_value participant_role ON (civicrm_participant.role_id = participant_role.value
496 AND option_group_participant_role.id = participant_role.option_group_id ) ";
497 break;
498
499 case 'participant_discount_name':
500 $from = " $side JOIN civicrm_discount discount ON ( civicrm_participant.discount_id = discount.id )";
501 $from .= " $side JOIN civicrm_option_group discount_name ON ( discount_name.id = discount.price_set_id ) ";
502 break;
503 }
504 return $from;
505 }
506
507 /**
508 * getter for the qill object
509 *
510 * @return string
511 * @access public
512 */
513 function qill() {
514 return (isset($this->_qill)) ? $this->_qill : "";
515 }
516
517 /**
518 * @param $mode
519 * @param bool $includeCustomFields
520 *
521 * @return array|null
522 */
523 static function defaultReturnProperties($mode,
524 $includeCustomFields = TRUE
525 ) {
526 $properties = NULL;
527 if ($mode & CRM_Contact_BAO_Query::MODE_EVENT) {
528 $properties = array(
529 'contact_type' => 1,
530 'contact_sub_type' => 1,
531 'sort_name' => 1,
532 'display_name' => 1,
533 'event_id' => 1,
534 'event_title' => 1,
535 'event_start_date' => 1,
536 'event_end_date' => 1,
537 'event_type' => 1,
538 'participant_id' => 1,
539 'participant_status' => 1,
540 'participant_role_id' => 1,
541 'participant_note' => 1,
542 'participant_register_date' => 1,
543 'participant_source' => 1,
544 'participant_fee_level' => 1,
545 'participant_is_test' => 1,
546 'participant_is_pay_later' => 1,
547 'participant_fee_amount' => 1,
548 'participant_discount_name' => 1,
549 'participant_fee_currency' => 1,
550 'participant_registered_by_id' => 1,
551 'participant_campaign_id' => 1,
552 );
553
554 if ($includeCustomFields) {
555 // also get all the custom participant properties
556 $fields = CRM_Core_BAO_CustomField::getFieldsForImport('Participant');
557 if (!empty($fields)) {
558 foreach ($fields as $name => $dontCare) {
559 $properties[$name] = 1;
560 }
561 }
562 }
563 }
564
565 return $properties;
566 }
567
568 /**
569 * @param CRM_Core_Form $form
570 */
571 static function buildSearchForm(&$form) {
572 $dataURLEventFee = CRM_Utils_System::url('civicrm/ajax/eventFee',
573 "reset=1",
574 FALSE, NULL, FALSE
575 );
576
577 $form->assign('dataURLEventFee', $dataURLEventFee);
578
579 $eventId = $form->addEntityRef('event_id', ts('Event Name'), array(
580 'entity' => 'event',
581 'placeholder' => ts('- any -'),
582 'select' => array('minimumInputLength' => 0),
583 )
584 );
585 $eventType = $form->addEntityRef('event_type_id', ts('Event Type'), array(
586 'entity' => 'option_value',
587 'placeholder' => ts('- any -'),
588 'select' => array('minimumInputLength' => 0),
589 'api' => array(
590 'params' => array('option_group_id' => 'event_type'),
591 ),
592 )
593 );
594 $form->add('text', 'participant_fee_id', ts('Fee Level'), array('class' => 'big crm-ajax-select'));
595
596 CRM_Core_Form_Date::buildDateRange($form, 'event', 1, '_start_date_low', '_end_date_high', ts('From'), FALSE);
597
598 $status = CRM_Event_PseudoConstant::participantStatus(NULL, NULL, 'label');
599 foreach ($status as $id => $Name) {
600 $form->_participantStatus = &$form->addElement('checkbox', "participant_status_id[$id]", NULL, $Name);
601 }
602
603 foreach (CRM_Event_PseudoConstant::participantRole() as $rId => $rName) {
604 $form->_participantRole = &$form->addElement('checkbox', "participant_role_id[$rId]", NULL, $rName);
605 }
606
607 $form->addYesNo('participant_test', ts('Participant is a Test?'), TRUE);
608 $form->addYesNo('participant_pay_later', ts('Participant is Pay Later?'), TRUE);
609 $form->addElement('text', 'participant_fee_amount_low', ts('From'), array('size' => 8, 'maxlength' => 8));
610 $form->addElement('text', 'participant_fee_amount_high', ts('To'), array('size' => 8, 'maxlength' => 8));
611
612 $form->addRule('participant_fee_amount_low', ts('Please enter a valid money value.'), 'money');
613 $form->addRule('participant_fee_amount_high', ts('Please enter a valid money value.'), 'money');
614 // add all the custom searchable fields
615 $extends = array('Participant', 'Event');
616 $groupDetails = CRM_Core_BAO_CustomGroup::getGroupDetail(NULL, TRUE, $extends);
617 if ($groupDetails) {
618 $form->assign('participantGroupTree', $groupDetails);
619 foreach ($groupDetails as $group) {
620 foreach ($group['fields'] as $field) {
621 $fieldId = $field['id'];
622 $elementName = 'custom_' . $fieldId;
623 CRM_Core_BAO_CustomField::addQuickFormElement($form,
624 $elementName,
625 $fieldId,
626 FALSE, FALSE, TRUE
627 );
628 }
629 }
630 }
631
632 CRM_Campaign_BAO_Campaign::addCampaignInComponentSearch($form, 'participant_campaign_id');
633
634 $form->assign('validCiviEvent', TRUE);
635 $form->setDefaults(array('participant_test' => 0));
636 }
637
638 /**
639 * @param $row
640 * @param $id
641 */
642 static function searchAction(&$row, $id) {}
643
644 /**
645 * @param $tables
646 */
647 static function tableNames(&$tables) {
648 //add participant table
649 if (!empty($tables['civicrm_event'])) {
650 $tables = array_merge(array('civicrm_participant' => 1), $tables);
651 }
652 }
653 }
654