forked from willfarrell/php
-
Notifications
You must be signed in to change notification settings - Fork 0
/
class.filter.php
1681 lines (1442 loc) · 38.6 KB
/
class.filter.php
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
<?php
/*
http://codeigniter.com/user_guide/libraries/form_validation.html
Rule Param Details
// validation - codeigniter //
required No Returns FALSE if the form element is empty.
matches Yes Returns FALSE if the form element does not match the one in the parameter. matches[form_item]
is_unique Yes Returns FALSE if the form element is not unique to the table and field name in the parameter. is_unique[table.field]
min_length Yes Returns FALSE if the form element is shorter then the parameter value. min_length[6]
max_length Yes Returns FALSE if the form element is longer then the parameter value. max_length[12]
exact_length Yes Returns FALSE if the form element is not exactly the parameter value. exact_length[8]
greater_than Yes Returns FALSE if the form element is less than the parameter value or not numeric. greater_than[8]
less_than Yes Returns FALSE if the form element is greater than the parameter value or not numeric. less_than[8]
alpha No Returns FALSE if the form element contains anything other than alphabetical characters.
alpha_numeric No Returns FALSE if the form element contains anything other than alpha-numeric characters.
alpha_dash No Returns FALSE if the form element contains anything other than alpha-numeric characters, underscores or dashes.
numeric No Returns FALSE if the form element contains anything other than numeric characters.
integer No Returns FALSE if the form element contains anything other than an integer.
decimal Yes Returns FALSE if the form element is not exactly the parameter value.
boolean No Returns FALSE if the form element contains anything other than a boolean.
is_natural No Returns FALSE if the form element contains anything other than a natural number: 0, 1, 2, 3, etc.
is_natural_no_zero No Returns FALSE if the form element contains anything other than a natural number, but not zero: 1, 2, 3, etc.
valid_email No Returns FALSE if the form element does not contain a valid email address.
valid_emails No Returns FALSE if any value provided in a comma separated list is not a valid email.
valid_ip No Returns FALSE if the supplied IP is not valid. Accepts an optional parameter of "IPv4" or "IPv6" to specify an IP format.
valid_base64 No Returns FALSE if the supplied string contains anything other than valid Base64 characters.
// validation - custom //
valid_email_dns No Returns FALSE if the form element does not contain a valid email address or has no MX record.
valid_url No Returns FALSE if the form element does not contain a valid URL.
*valid_mail_code Yes Returns FALSE if the form element does not contain a valid mail code for a given country. valid_mail_code[CA] country code
*valid_phone Yes Returns FALSE if the form element does not contain a valid phone/fax number. valid_phone[+] // + = international
// sanitize - php functions //
trim No
strip_tags Yes strip_tags[whitelist,a,b,i]
// sanitize - custom //
cast_boolean No converts popular boolean strings into boolean (true/false,1/0,yes/no,on/off)
prep_url No Adds "http://" to URLs if missing.
encode_php_tags No Converts PHP tags to entities.
*sanitize_string No filter_var($str, FILTER_SANITIZE_STRING)
*/
/*
USE CASE
require_once('fct/class.filter.php');
// no groups, single var
$this->filter->set_request_data('keyword', $keyword);
$this->filter->set_rules('keyword', 'trim');
if(!$this->filter->run()) {
$return["errors"] = $this->filter->get_errors();
$return["alerts"] = $this->filter->get_alerts('error');
return $return;
}
$keyword = $this->filter->get_request_data('keyword');
// with groups and array of inputs
$this->filter->set_request_data($request_data);
$this->filter->set_group_rules('group_a,group_b');
$this->filter->set_key_rules(array('key_a', 'key_2'), 'required');
$this->filter->set_all_rules('trim|sanitize_string', true); // apply to all
if(!$this->filter->run()) {
$return["errors"] = $this->filter->get_errors();
return $return;
}
$request_data = $this->filter->get_request_data();
*/
require_once 'inc.filter.php'; // config file
//require_once 'test.filter.php';
class Filter {
var $form = array();
// rule messages
protected $_request_data = array();
protected $_field_data = array(); // params about a field
protected $_config_rules = array();
protected $_defaut_messages = array(
// CI_Form_validation rules
'required' => 'is empty',
'matches' => 'does not match',
'is_unique' => 'is already taken',
'min_length' => 'is too short',
'max_length' => 'is too long',
'exact_length' => 'is not the right length',
'greater_than' => 'is too small',
'less_than' => 'is too large',
'alpha' => 'contains non alphabetical characters',
'alpha_numeric' => 'contains non alpha-numeric characters',
'alpha_dash' => 'contains non alpha-numeric characters, underscores or dashes',
'numeric' => 'contains non numeric characters',
'boolean' => 'is not a boolean',
'integer' => 'is not an integer',
'decimal' => 'is not a decimal number',
'is_natural' => 'is not zero or a positive integer', // array values
'is_natural_no_zero' => 'is not a positive integer', // DB ID values
'valid_email' => 'is not a valid email',
'valid_emails' => 'are not a valid emails',
'valid_ip' => 'is not a valid IP',
'valid_base64' => 'is not in Base64',
// custom
'valid_email_dns' => 'is not a valid email domain',
'valid_url' => 'is not a valid url',
'valid_mail_code' => 'is not a valid mail code',
'valid_phone' => 'is not a valid phone number',
);
protected $_error_array = array();
protected $_error_messages = array();
protected $_error_prefix = '<p>';
protected $_error_suffix = '</p>';
protected $_safe_form_data = FALSE;
function __construct($rules = array()){
global $database;
$this->db = $database;
$this->_config_rules = $rules;
// copy sent params
if (isset($_GET) && count($_GET)) $this->_request_data = $_GET;
else if (isset($_POST) && count($_POST)) $this->_request_data = $_POST;
else if (isset($_PUT) && count($_PUT)) $this->_request_data = $_PUT;
// set default error messages
foreach ($this->_defaut_messages as $key => $value) {
$this->set_message($key, $value);
}
}
function __destruct() {
}
function get_request_data($key = NULL) {
if ($key != NULL) {
return $this->_request_data[$key];
} else {
return $this->_request_data;
}
}
function set_request_data($request_data, $value = NULL) {
if (is_array($request_data)) {
$this->_request_data = $request_data;
} else {
$key = $request_data;
$this->_request_data[$key] = $value;
}
}
function get_error_array() {
return $this->_error_array;
}
function get_errors($class = 'error') {
$alerts = array();
foreach ($this->_field_data as $key => $value) {
//if ($value['error']) $errors[$key] = $value['error'];
if ($value['error']) $alerts[$key] = array('class' => $class, 'label' => $value['label'], 'message' => $value['error']);
}
return $alerts;
}
/**
* Set Rules for an array of keys
*
* This function takes an array of field names and validation
* rules as input, validates the info, and stores it
*
* @access public
* @param mixed
* @param string
* @param bool
* @return void
*/
function set_key_rules($keys, $rules, $pos = false) {
if (is_array($keys)) {
foreach ($keys as $key) {
$spacer = ($this->_field_data[$key]['rules'] == '') ? '' : '|';
$this->_field_data[$key]['rules'] = $pos ? $this->_field_data[$key]['rules'].$spacer.$rules : $rules.$spacer.$this->_field_data[$key]['rules'];
}
}
}
function set_all_rules($rules, $pos = false) {
foreach ($this->_field_data as $key => $value) {
$spacer = ($value['rules'] == '') ? '' : '|';
$this->_field_data[$key]['rules'] = $pos ? $value['rules'].$spacer.$rules : $rules.$spacer.$value['rules'];
}
}
/**
* Set Rules from config groups
*
* @access public
* @param mixed
* @return void
*/
function set_group_rules($groups) {
// Is there a validation rule for the particular group being accessed?
$groups = ($groups == '') ? '' : explode(",", $groups);
if (is_array($groups))
{
foreach($groups as $group) {
if ($groups != '' AND isset($this->_config_rules[$group]))
{
$this->set_rules($this->_config_rules[$group]);
}
}
}
}
// --------------------------------------------------------------------
/**
* Set Rules
*
* This function takes an array of field names and validation
* rules as input, validates the info, and stores it
*
* @access public
* @param mixed
* @param string
* @return void
*/
public function set_rules($field, $label = '', $rules = '')
{
// No reason to set rules if we have no POST data
if (count($this->_request_data) == 0)
{
return $this;
}
// If an array was passed via the first parameter instead of indidual string
// values we cycle through it and recursively call this function.
if (is_array($field))
{
foreach ($field as $row)
{
// Houston, we have a problem...
if ( ! isset($row['field']) OR ! isset($row['rules']))
{
continue;
}
// If the field label wasn't passed we use the field name
$label = ( ! isset($row['label'])) ? $row['field'] : $row['label'];
// Here we go!
$this->set_rules($row['field'], $label, $row['rules']);
}
return $this;
}
// No fields? Nothing to do...
if ( ! is_string($field) OR ! is_string($rules) OR $field == '')
{
return $this;
}
// If the field label wasn't passed we use the field name
$label = ($label == '') ? $field : $label;
// Is the field name an array? We test for the existence of a bracket "[" in
// the field name to determine this. If it is an array, we break it apart
// into its components so that we can fetch the corresponding POST data later
if (strpos($field, '[') !== FALSE AND preg_match_all('/\[(.*?)\]/', $field, $matches))
{
// Note: Due to a bug in current() that affects some versions
// of PHP we can not pass function call directly into it
$x = explode('[', $field);
$indexes[] = current($x);
for ($i = 0; $i < count($matches['0']); $i++)
{
if ($matches['1'][$i] != '')
{
$indexes[] = $matches['1'][$i];
}
}
$is_array = TRUE;
}
else
{
$indexes = array();
$is_array = FALSE;
}
// Build our master array
$this->_field_data[$field] = array(
'field' => $field,
'label' => $label,
'rules' => $rules,
'is_array' => $is_array,
'keys' => $indexes,
'postdata' => NULL,
'error' => ''
);
return $this;
}
// --------------------------------------------------------------------
/**
* Set Error Message
*
* Lets users set their own error messages on the fly. Note: The key
* name has to match the function name that it corresponds to.
*
* @access public
* @param string
* @param string
* @return string
*/
public function set_message($lang, $val = '')
{
if ( ! is_array($lang))
{
$lang = array($lang => $val);
}
$this->_error_messages = array_merge($this->_error_messages, $lang);
return $this;
}
// --------------------------------------------------------------------
/**
* Set The Error Delimiter
*
* Permits a prefix/suffix to be added to each error message
*
* @access public
* @param string
* @param string
* @return void
*/
public function set_error_delimiters($prefix = '<p>', $suffix = '</p>')
{
$this->_error_prefix = $prefix;
$this->_error_suffix = $suffix;
return $this;
}
// --------------------------------------------------------------------
/**
* Get Error Message
*
* Gets the error message associated with a particular field
*
* @access public
* @param string the field name
* @return void
*/
public function error($field = '', $prefix = '', $suffix = '')
{
if ( ! isset($this->_field_data[$field]['error']) OR $this->_field_data[$field]['error'] == '')
{
return '';
}
if ($prefix == '')
{
$prefix = $this->_error_prefix;
}
if ($suffix == '')
{
$suffix = $this->_error_suffix;
}
return $prefix.$this->_field_data[$field]['error'].$suffix;
}
// --------------------------------------------------------------------
/**
* Error String
*
* Returns the error messages as a string, wrapped in the error delimiters
*
* @access public
* @param string
* @param string
* @return str
*/
public function error_string($prefix = '', $suffix = '')
{
// No errrors, validation passes!
if (count($this->_error_array) === 0)
{
return '';
}
if ($prefix == '')
{
$prefix = $this->_error_prefix;
}
if ($suffix == '')
{
$suffix = $this->_error_suffix;
}
// Generate the error string
$str = '';
foreach ($this->_error_array as $val)
{
if ($val != '')
{
$str .= $prefix.$val.$suffix."\n";
}
}
return $str;
}
// --------------------------------------------------------------------
/**
* Run the Validator
*
* This function does all the work.
*
* @access public
* @return bool
*/
public function run($groups = '')
{
// Do we even have any data to process? Mm?
if (count($this->_request_data) == 0)
{
return FALSE;
}
// Does the _field_data array containing the validation rules exist?
// If not, we look to see if they were assigned via a config file
if (count($this->_field_data) == 0)
{
// No validation rules? We're done...
if (count($this->_config_rules) == 0)
{
return FALSE;
}
// Is there a validation rule for the particular group being accessed?
$groups = ($groups == '') ? '' : explode(",", $groups);
if (is_array($groups))
{
foreach($groups as $group) {
if ($groups != '' AND isset($this->_config_rules[$group]))
{
$this->set_rules($this->_config_rules[$group]);
}
}
}
else
{
$this->set_rules($this->_config_rules);
}
// We're we able to set the rules correctly?
if (count($this->_field_data) == 0)
{
//log_message('debug', "Unable to find validation rules");
return FALSE;
}
}
// Load the language file containing error messages
//$this->CI->lang->load('form_validation');
// Cycle through the rules for each field, match the
// corresponding $_POST item and test for errors
foreach ($this->_field_data as $field => $row)
{
// Fetch the data from the corresponding $_POST array and cache it in the _field_data array.
// Depending on whether the field name is an array or a string will determine where we get it from.
if ($row['is_array'] == TRUE)
{
$this->_field_data[$field]['postdata'] = $this->_reduce_array($this->_request_data, $row['keys']);
}
else
{
if (isset($this->_request_data[$field]) AND $this->_request_data[$field] != "")
{
$this->_field_data[$field]['postdata'] = $this->_request_data[$field];
}
}
$this->_execute($row, explode('|', $row['rules']), $this->_field_data[$field]['postdata']);
}
// Did we end up with any errors?
$total_errors = count($this->_error_array);
if ($total_errors > 0)
{
$this->_safe_form_data = TRUE;
}
// Now we need to re-set the POST data with the new, processed data
$this->_reset_post_array();
// No errors, validation passes!
if ($total_errors == 0)
{
return TRUE;
}
// Validation fails
return FALSE;
}
// --------------------------------------------------------------------
/**
* Traverse a multidimensional $this->_request_data array index until the data is found
*
* @access private
* @param array
* @param array
* @param integer
* @return mixed
*/
protected function _reduce_array($array, $keys, $i = 0)
{
if (is_array($array))
{
if (isset($keys[$i]))
{
if (isset($array[$keys[$i]]))
{
$array = $this->_reduce_array($array[$keys[$i]], $keys, ($i+1));
}
else
{
return NULL;
}
}
else
{
return $array;
}
}
return $array;
}
// --------------------------------------------------------------------
/**
* Re-populate the _POST array with our finalized and processed data
*
* @access private
* @return null
*/
protected function _reset_post_array()
{
foreach ($this->_field_data as $field => $row)
{
if ( ! is_null($row['postdata']))
{
if ($row['is_array'] == FALSE)
{
if (isset($this->_request_data[$row['field']]))
{
$this->_request_data[$row['field']] = $this->prep_for_form($row['postdata']);
}
}
else
{
// start with a reference
$post_ref =& $this->_request_data;
// before we assign values, make a reference to the right POST key
if (count($row['keys']) == 1)
{
$post_ref =& $post_ref[current($row['keys'])];
}
else
{
foreach ($row['keys'] as $val)
{
$post_ref =& $post_ref[$val];
}
}
if (is_array($row['postdata']))
{
$array = array();
foreach ($row['postdata'] as $k => $v)
{
$array[$k] = $this->prep_for_form($v);
}
$post_ref = $array;
}
else
{
$post_ref = $this->prep_for_form($row['postdata']);
}
}
}
}
}
// --------------------------------------------------------------------
/**
* Executes the Validation routines
*
* @access private
* @param array
* @param array
* @param mixed
* @param integer
* @return mixed
*/
protected function _execute($row, $rules, $postdata = NULL, $cycles = 0)
{
// If the $this->_request_data data is an array we will run a recursive call
if (is_array($postdata))
{
foreach ($postdata as $key => $val)
{
$this->_execute($row, $rules, $val, $cycles);
$cycles++;
}
return;
}
// --------------------------------------------------------------------
// If the field is blank, but NOT required, no further tests are necessary
$callback = FALSE;
if ( ! in_array('required', $rules) AND is_null($postdata))
{
// Before we bail out, does the rule contain a callback?
if (preg_match("/(callback_\w+(\[.*?\])?)/", implode(' ', $rules), $match))
{
$callback = TRUE;
$rules = (array('1' => $match[1]));
}
else
{
return;
}
}
// --------------------------------------------------------------------
// Isset Test. Typically this rule will only apply to checkboxes.
if (is_null($postdata) AND $callback == FALSE)
{
if (in_array('isset', $rules, TRUE) OR in_array('required', $rules))
{
// Set the message type
$type = (in_array('required', $rules)) ? 'required' : 'isset';
if ( ! isset($this->_error_messages[$type]))
{
/*if (FALSE === ($line = $this->CI->lang->line($type)))
{*/
$line = 'The field was not set';
/*}*/
}
else
{
$line = $this->_error_messages[$type];
}
// Build the error message
$message = sprintf($line, $this->_translate_fieldname($row['label']));
// Save the error message
$this->_field_data[$row['field']]['error'] = $message;
if ( ! isset($this->_error_array[$row['field']]))
{
$this->_error_array[$row['field']] = $message;
}
}
return;
}
// --------------------------------------------------------------------
// Cycle through each rule and run it
foreach ($rules As $rule)
{
$_in_array = FALSE;
// We set the $postdata variable with the current data in our master array so that
// each cycle of the loop is dealing with the processed data from the last cycle
if ($row['is_array'] == TRUE AND is_array($this->_field_data[$row['field']]['postdata']))
{
// We shouldn't need this safety, but just in case there isn't an array index
// associated with this cycle we'll bail out
if ( ! isset($this->_field_data[$row['field']]['postdata'][$cycles]))
{
continue;
}
$postdata = $this->_field_data[$row['field']]['postdata'][$cycles];
$_in_array = TRUE;
}
else
{
$postdata = $this->_field_data[$row['field']]['postdata'];
}
// --------------------------------------------------------------------
// Is the rule a callback?
$callback = FALSE;
if (substr($rule, 0, 9) == 'callback_')
{
$rule = substr($rule, 9);
$callback = TRUE;
}
// Strip the parameter (if exists) from the rule
// Rules can contain a parameter: max_length[5]
$param = FALSE;
if (preg_match("/(.*?)\[(.*)\]/", $rule, $match))
{
$rule = $match[1];
$param = $match[2];
}
// Call the function that corresponds to the rule
if ($callback === TRUE)
{
// Run the function and grab the result
$result = $this->$rule($postdata, $param);
// Re-assign the result to the master data array
if ($_in_array == TRUE)
{
$this->_field_data[$row['field']]['postdata'][$cycles] = (is_bool($result)) ? $postdata : $result;
}
else
{
$this->_field_data[$row['field']]['postdata'] = (is_bool($result)) ? $postdata : $result;
}
// If the field isn't required and we just processed a callback we'll move on...
if ( ! in_array('required', $rules, TRUE) AND $result !== FALSE)
{
continue;
}
}
else
{
if ( ! method_exists($this, $rule))
{
// If our own wrapper function doesn't exist we see if a native PHP function does.
// Users can use any native PHP function call that has one param. Now two, $value must be the first param
if (function_exists($rule))
{
if ($param) $result = $rule($postdata, $param);
else $result = $rule($postdata);
if ($_in_array == TRUE)
{
$this->_field_data[$row['field']]['postdata'][$cycles] = (is_bool($result)) ? $postdata : $result;
}
else
{
$this->_field_data[$row['field']]['postdata'] = (is_bool($result)) ? $postdata : $result;
}
}
else
{
//log_message('debug', "Unable to find validation rule: ".$rule);
echo "Unable to find validation rule: ".$rule;
}
continue;
}
$result = $this->$rule($postdata, $param);
if ($_in_array == TRUE)
{
$this->_field_data[$row['field']]['postdata'][$cycles] = (is_bool($result)) ? $postdata : $result;
}
else
{
$this->_field_data[$row['field']]['postdata'] = (is_bool($result)) ? $postdata : $result;
}
// spaecial case
if ($rule == 'cast_boolean') {
$this->_field_data[$row['field']]['postdata'] = $result;
$result = "";
}
}
// Did the rule test negatively? If so, grab the error.
if ($result === FALSE)
{
if ( ! isset($this->_error_messages[$rule]))
{
//if (FALSE === ($line = $this->CI->lang->line($rule)))
//{
$line = 'Unable to access an error message corresponding to your field name.';
//}
}
else
{
$line = $this->_error_messages[$rule];
}
// Is the parameter we are inserting into the error message the name
// of another field? If so we need to grab its "field label"
if (isset($this->_field_data[$param]) AND isset($this->_field_data[$param]['label']))
{
$param = $this->_translate_fieldname($this->_field_data[$param]['label']);
}
// Build the error message
$message = sprintf($line, $this->_translate_fieldname($row['label']), $param);
// Save the error message
$this->_field_data[$row['field']]['error'] = $message;
if ( ! isset($this->_error_array[$row['field']]))
{
$this->_error_array[$row['field']] = $message;
}
return;
}
}
}
// --------------------------------------------------------------------
/**
* Translate a field name
*
* @access private
* @param string the field name
* @return string
*/
protected function _translate_fieldname($fieldname)
{
// Do we need to translate the field name?
// We look for the prefix lang: to determine this
if (substr($fieldname, 0, 5) == 'lang:')
{
// Grab the variable
$line = substr($fieldname, 5);
// Were we able to translate the field name? If not we use $line
if (FALSE === ($fieldname = $this->CI->lang->line($line)))
{
return $line;
}
}
return $fieldname;
}
// --------------------------------------------------------------------
/**
* Required
*
* @access public
* @param string
* @return bool
*/
public function required($str)
{
if ( ! is_array($str))
{
return (trim($str) == '') ? FALSE : TRUE;
}
else
{
return ( ! empty($str));
}
}
// --------------------------------------------------------------------
/**
* Performs a Regular Expression match test.
*
* @access public
* @param string
* @param regex
* @return bool
*/
public function regex_match($str, $regex)
{
if ( ! preg_match($regex, $str))
{
return FALSE;
}
return TRUE;
}
// --------------------------------------------------------------------
/**
* Match one field to another
*
* @access public
* @param string
* @param field
* @return bool
*/
public function matches($str, $field)
{
if ( ! isset($this->_request_data[$field]))
{
return FALSE;
}
$field = $this->_request_data[$field];
return ($str !== $field) ? FALSE : TRUE;
}
// --------------------------------------------------------------------
/**
* Match one field to another
*
* @access public
* @param string
* @param field
* @return bool
*/
public function is_unique($str, $field)
{
list($table, $field)=explode('.', $field);
$query = $this->db->select($table, array($field => $str));
return $query->num_rows() === 0;
}
// --------------------------------------------------------------------
/**
* Minimum Length
*
* @access public
* @param string
* @param value
* @return bool
*/
public function min_length($str, $val)
{
if (preg_match("/[^0-9]/", $val))
{
return FALSE;
}
if (function_exists('mb_strlen'))
{
return (mb_strlen($str) < $val) ? FALSE : TRUE;
}
return (strlen($str) < $val) ? FALSE : TRUE;
}
// --------------------------------------------------------------------