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Conditional Fields for Contact Form 7 / 2.1
Conditional Fields for Contact Form 7 v2.1
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cf7-conditional-fields / cf7cf.php
cf7-conditional-fields Last commit date
js 4 years ago jsdoc-out 4 years ago Wpcf7cfMailParser.php 5 years ago admin-style.css 6 years ago admin-style.css.map 6 years ago admin-style.scss 6 years ago admin.php 4 years ago cf7cf.php 4 years ago contact-form-7-conditional-fields.php 4 years ago init.php 4 years ago readme.txt 4 years ago style.css 6 years ago tg_pane_group.php 5 years ago wpcf7cf-options.php 4 years ago
cf7cf.php
509 lines
1 <?php
2
3 class CF7CF {
4 private $hidden_fields = array();
5 private $visible_groups = array();
6 private $hidden_groups = array();
7 private $repeaters = array();
8
9 function __construct() {
10
11 // can't use wpcf7_enqueue_scripts hook, because it's possible that people
12 // want to disable the CF7 scripts. but in this case Conditional fields should still work.
13 // add_action('wpcf7_enqueue_scripts', array(__CLASS__, 'enqueue_js')); // <-- don't use this
14
15 // Enqueue_scripts moved to function outside class.
16
17 // add_action('wp_enqueue_scripts', array(__CLASS__, 'enqueue_js'), 20);
18 // add_action('wpcf7_enqueue_styles', array(__CLASS__, 'enqueue_css'));
19
20 // Register shortcodes
21 add_action('wpcf7_init', array(__CLASS__, 'add_shortcodes'));
22
23 // Tag generator
24 add_action('admin_init', array(__CLASS__, 'tag_generator'), 590);
25
26 // compatibility with CF7 multi-step forms by Webhead LLC.
27 add_filter( 'wpcf7_posted_data', array($this,'cf7msm_merge_post_with_cookie'), 8, 1 );
28
29 // compatibility with CF7 Multi Step by NinjaTeam https://wordpress.org/plugins/cf7-multi-step/
30 add_action('wp_ajax_cf7mls_validation', array($this,'cf7mls_validation_callback'),9);
31 add_action('wp_ajax_nopriv_cf7mls_validation', array($this,'cf7mls_validation_callback'),9);
32
33 add_filter( 'wpcf7_validate', array($this, 'skip_validation_for_hidden_fields'), 2, 2 );
34
35 add_filter( 'wpcf7_validate_file*', array($this, 'skip_validation_for_hidden_file_field'), 30, 3);
36 add_filter( 'wpcf7_validate_multifile*', array($this, 'skip_validation_for_hidden_file_field'), 30, 3);
37
38 // validation messages
39 add_action('wpcf7_config_validator_validate', array($this,'wpcf7cf_config_validator_validate'));
40
41
42 add_action("wpcf7_before_send_mail", [$this, 'hide_hidden_mail_fields'], 10, 3);
43
44 register_activation_hook(__FILE__, array($this, 'activate'));
45
46 if (is_admin()) {
47 require_once dirname(__FILE__) . '/admin.php';
48 }
49 }
50
51
52
53 /**
54 * Suppress invalid mailbox syntax errors on fields that contain existing conditional
55 */
56 function wpcf7cf_config_validator_validate(WPCF7_ConfigValidator $wpcf7_config_validator) {
57
58 // TODO: For now we kill every syntax error once a [groupname] tag is detected.
59 // Ideally, this function should check each string inside the group for invalid syntax.
60 // TODO 2: ajax validation not working yet, because $cf->scan_form_tags() does not seem to contain group tags if it's an ajax request. Need to investigate.
61
62 $cf = $wpcf7_config_validator->contact_form();
63 $all_group_tags = $cf->scan_form_tags();
64
65 foreach ($wpcf7_config_validator->collect_error_messages() as $err_type => $err) {
66
67 // print_r($err_type);
68
69 $parts = explode('.',$err_type);
70
71 $property = $parts[0];
72
73 if ($property == 'form') continue; // the 'form' field can be safely validated by CF7. No need to suppress it.
74
75 $sub_prop = $parts[1];
76 $prop_val = $cf->prop($property)[$sub_prop];
77
78
79 // TODO 2: Dirty hack. Because of TODO 2 we are just going to kill the error message if we detect the string '[/'
80 // Start removing here.
81 if (strpos($prop_val, '[/') !== false) {
82 $wpcf7_config_validator->remove_error($err_type, WPCF7_ConfigValidator::error_invalid_mailbox_syntax);
83 continue;
84 }
85 // TODO 2: Stop removing here. and uncomment code below.
86
87 // foreach ($all_group_tags as $form_tag) {
88 // if (strpos($prop_val, '['.$form_tag->name.']') !== false) {
89 // $wpcf7_config_validator->remove_error($err_type, WPCF7_ConfigValidator::error_invalid_mailbox_syntax);
90 // }
91 // }
92
93 }
94
95 return new WPCF7_ConfigValidator($wpcf7_config_validator->contact_form());
96 }
97
98 function activate() {
99 //add options with add_option and stuff
100 }
101
102 public static function add_shortcodes() {
103 if (function_exists('wpcf7_add_form_tag'))
104 wpcf7_add_form_tag('group', array(__CLASS__, 'shortcode_handler'), true);
105 else if (function_exists('wpcf7_add_shortcode')) {
106 wpcf7_add_shortcode('group', array(__CLASS__, 'shortcode_handler'), true);
107 } else {
108 throw new Exception('functions wpcf7_add_form_tag and wpcf7_add_shortcode not found.');
109 }
110 }
111
112 function group_shortcode_handler( $atts, $content = "" ) {
113 return $content;
114 }
115
116 public static function shortcode_handler($tag) {
117 //$tag = new WPCF7_Shortcode($tag);
118 $tag = new WPCF7_FormTag($tag);
119 //ob_start();
120 //print_r($tag);
121 //return print_r($tag, true);
122 return $tag->content;
123 }
124
125
126 public static function tag_generator() {
127 if (! function_exists( 'wpcf7_add_tag_generator'))
128 return;
129
130 wpcf7_add_tag_generator('group',
131 __('Conditional Fields Group', 'cf7-conditional-fields'),
132 'wpcf7-tg-pane-group',
133 array(__CLASS__, 'tg_pane')
134 );
135
136 do_action('wpcf7cf_tag_generator');
137 }
138
139 static function tg_pane( $contact_form, $args = '' ) {
140 $args = wp_parse_args( $args, array() );
141 $type = 'group';
142
143 $description = __( "Generate a group tag to group form elements that can be shown conditionally.", 'cf7-conditional-fields' );
144
145 include 'tg_pane_group.php';
146 }
147
148 /**
149 * Remove validation requirements for fields that are hidden at the time of form submission.
150 * Required/invalid fields should never trigger validation errors if they are inside a hidden group during submission.
151 * Called using add_filter( 'wpcf7_validate_[tag_type]', array($this, 'skip_validation_for_hidden_fields'), 2, 2 );
152 * where the priority of 2 causes this to kill any validations with a priority higher than 2
153 *
154 * @param $result
155 * @param $tag
156 *
157 * @return mixed
158 */
159 function skip_validation_for_hidden_fields($result, $tags, $args = []) {
160
161 if(isset($_POST)) {
162 $this->set_hidden_fields_arrays($_POST);
163 }
164
165 $invalid_fields = $result->get_invalid_fields();
166 $return_result = new WPCF7_Validation();
167
168 if (count($this->hidden_fields) == 0 || !is_array($invalid_fields) || count($invalid_fields) == 0) {
169 $return_result = $result;
170 } else {
171 foreach ($invalid_fields as $invalid_field_key => $invalid_field_data) {
172 if (!in_array($invalid_field_key, $this->hidden_fields)) {
173 $return_result->invalidate($invalid_field_key, $invalid_field_data['reason']);
174 }
175 }
176 }
177
178 return apply_filters('wpcf7cf_validate', $return_result, $tags);
179
180 }
181
182 /**
183 * Does the same thing as skip_validation_for_hidden_fields, but CF7 will check files again later
184 * via the wpcf7_unship_uploaded_files function
185 * so we need to skip validation a second time for individual file fields
186 */
187 function skip_validation_for_hidden_file_field($result, $tag, $args=[]) {
188 return $this->skip_validation_for_hidden_fields( $result, [ $tag ] );
189 }
190
191 function cf7msm_merge_post_with_cookie($posted_data) {
192
193 if (!function_exists('cf7msm_get') || !key_exists('cf7msm_posted_data',$_COOKIE)) return $posted_data;
194
195 if (!$posted_data) {
196 $posted_data = WPCF7_Submission::get_instance()->get_posted_data();
197 }
198
199 // this will temporarily set the hidden fields data to the posted_data.
200 // later this function will be called again with the updated posted_data
201 $this->set_hidden_fields_arrays($_POST);
202
203 // get cookie data
204 $cookie_data = cf7msm_get('cf7msm_posted_data');
205 $cookie_data_hidden_group_fields = json_decode(stripslashes($cookie_data['_wpcf7cf_hidden_group_fields']));
206 $cookie_data_hidden_groups = json_decode(stripslashes($cookie_data['_wpcf7cf_hidden_groups']));
207 $cookie_data_visible_groups = json_decode(stripslashes($cookie_data['_wpcf7cf_visible_groups']));
208
209 // remove all the currently posted data from the cookie data (we don't wanna add it twice)
210 $cookie_data_hidden_group_fields = array_diff($cookie_data_hidden_group_fields, array_keys($posted_data));
211 $cookie_data_hidden_groups = array_diff((array) $cookie_data_hidden_groups, $this->hidden_groups, $this->visible_groups);
212 $cookie_data_visible_groups = array_diff((array) $cookie_data_visible_groups, $this->hidden_groups, $this->visible_groups);
213
214 // update current post data with cookie data
215 $posted_data['_wpcf7cf_hidden_group_fields'] = addslashes(json_encode(array_merge((array) $cookie_data_hidden_group_fields, $this->hidden_fields)));
216 $posted_data['_wpcf7cf_hidden_groups'] = addslashes(json_encode(array_merge((array) $cookie_data_hidden_groups, $this->hidden_groups)));
217 $posted_data['_wpcf7cf_visible_groups'] = addslashes(json_encode(array_merge((array) $cookie_data_visible_groups, $this->visible_groups)));
218
219 return $posted_data;
220 }
221
222 // compatibility with CF7 Multi Step by NinjaTeam https://wordpress.org/plugins/cf7-multi-step/
223 function cf7mls_validation_callback() {
224 $this->set_hidden_fields_arrays($_POST);
225 }
226
227 /**
228 * Finds the currently submitted form and set the hidden_fields variables accoringly
229 *
230 * @param bool|array $posted_data
231 */
232 function set_hidden_fields_arrays($posted_data = false) {
233
234 if (!$posted_data) $posted_data = $_POST;
235
236 $hidden_fields = json_decode(stripslashes($posted_data['_wpcf7cf_hidden_group_fields']));
237 if (is_array($hidden_fields) && count($hidden_fields) > 0) {
238 foreach ($hidden_fields as $field) {
239 $this->hidden_fields[] = $field;
240 if (wpcf7cf_endswith($field, '[]')) {
241 $this->hidden_fields[] = substr($field,0,strlen($field)-2);
242 }
243 }
244 }
245 $this->hidden_groups = json_decode(stripslashes($posted_data['_wpcf7cf_hidden_groups']));
246 $this->visible_groups = json_decode(stripslashes($posted_data['_wpcf7cf_visible_groups']));
247 $this->repeaters = json_decode(stripslashes($posted_data['_wpcf7cf_repeaters']));
248 $this->steps = json_decode(stripslashes($posted_data['_wpcf7cf_steps']));
249 }
250
251 function hide_hidden_mail_fields($form,$abort,$submission) {
252 $props = $form->get_properties();
253 $mails = ['mail','mail_2','messages'];
254 foreach ($mails as $mail) {
255 if (!is_array($props[$mail])) { continue; }
256 foreach ($props[$mail] as $key=>$val) {
257
258 $parser = new Wpcf7cfMailParser($val, $this->visible_groups, $this->hidden_groups, $this->repeaters, $_POST);
259
260 // $props[$mail][$key] = preg_replace_callback(WPCF7CF_REGEX_MAIL_GROUP, array($this, 'hide_hidden_mail_fields_regex_callback'), $val );
261 $props[$mail][$key] = $parser->getParsedMail();
262 }
263
264
265 }
266
267
268 //$props['mail']['body'] = 'xxx';
269 $form->set_properties($props);
270 }
271
272 function hide_hidden_mail_fields_regex_callback ( $matches ) {
273 $name = $matches[1];
274 $content = $matches[2];
275 if ( in_array( $name, $this->hidden_groups ) ) {
276 // The tag name represents a hidden group, so replace everything from [tagname] to [/tagname] with nothing
277 return '';
278 } elseif ( in_array( $name, $this->visible_groups ) ) {
279 // The tag name represents a visible group, so remove the tags themselves, but return everything else
280 // instead of just returning the $content, return the preg_replaced content :)
281 return preg_replace_callback(WPCF7CF_REGEX_MAIL_GROUP, array($this, 'hide_hidden_mail_fields_regex_callback'), $content );
282 } else {
283 // The tag name doesn't represent a group that was used in the form. Leave it alone (return the entire match).
284 return $matches[0];
285 }
286 }
287
288 public static function parse_conditions($string, $format='array') {
289 // Parse stuff like "show [g1] if [field] equals 2" to Array
290
291 preg_match_all(WPCF7CF_REGEX_CONDITIONS, $string, $matches);
292
293 $conditions = [];
294
295 $prev_then_field = '';
296 foreach ($matches[0] as $i=>$line) {
297 $then_field = $matches[1][$i];
298 $if_field = $matches[2][$i];
299 $operator = $matches[3][$i];
300 $if_value = $matches[4][$i];
301
302 $index = count($conditions);
303
304 if ($then_field == '') {
305 $index = $index -1;
306 $then_field = $prev_then_field;
307 } else {
308 $conditions[$index]['then_field'] = $then_field;
309 }
310
311 $conditions[$index]['and_rules'][] = [
312 'if_field' => $if_field,
313 'operator' => $operator,
314 'if_value' => $if_value,
315 ];
316
317 $prev_then_field = $then_field;
318
319 }
320
321 $conditions = array_values($conditions);
322
323 if ($format == 'array') {
324 return $conditions;
325 } else if ($format == 'json') {
326 return json_encode($conditions);
327 }
328 }
329
330 /**
331 * load the conditions from the form's post_meta
332 *
333 * @param string $form_id
334 * @return array
335 */
336 public static function getConditions($form_id) {
337 // make sure conditions are an array.
338 $options = get_post_meta($form_id,'wpcf7cf_options',true);
339 return is_array($options) ? $options : array(); // the meta key 'wpcf7cf_options' is a bit misleading at this point, because it only holds the form's conditions, no other options/settings
340 }
341
342 /**
343 * load the conditions from the form's post_meta as plain text
344 *
345 * @param string $form_id
346 * @return void
347 */
348 public static function getConditionsPlainText($form_id) {
349 return CF7CF::serializeConditions(CF7CF::getConditions($form_id));
350 }
351
352 public static function serializeConditions($array) {
353
354 $lines = [];
355
356 foreach ($array as $entry) {
357 $then_field = $entry['then_field'];
358 $and_rules = $entry['and_rules'];
359 $indent = strlen($then_field) + 4;
360 foreach ($and_rules as $i => $rule) {
361 $if_field = $rule['if_field'];
362 $operator = $rule['operator'];
363 $if_value = $rule['if_value'];
364
365 if ($i == 0) {
366 $lines[] = "show [${then_field}] if [${if_field}] ${operator} \"${if_value}\"";
367 } else {
368 $lines[] = str_repeat(' ',$indent)."and if [${if_field}] ${operator} \"${if_value}\"";
369 }
370 }
371 }
372
373 return implode("\n", $lines);
374 }
375
376 /**
377 * save the conditions to the form's post_meta
378 *
379 * @param string $form_id
380 * @return void
381 */
382 public static function setConditions($form_id, $conditions) {
383 return update_post_meta($form_id,'wpcf7cf_options',$conditions); // the meta key 'wpcf7cf_options' is a bit misleading at this point, because it only holds the form's conditions, no other options/settings
384 }
385 }
386
387 new CF7CF;
388
389 add_filter( 'wpcf7_contact_form_properties', 'wpcf7cf_properties', 10, 2 );
390
391 function wpcf7cf_properties($properties, $wpcf7form) {
392 // Before CF7 5.5.3, this function was called each time we call get_properties() on a contact form. Since CF7 5.5.3 this function is called only once in the WPCF7_ContactForm
393 if (!is_admin() || (defined('DOING_AJAX') && DOING_AJAX)) { // TODO: kind of hacky. maybe find a better solution. Needed because otherwise the group tags will be replaced in the editor as well.
394 $form = $properties['form'];
395
396 $form_parts = preg_split('/(\[\/?group(?:\]|\s.*?\]))/',$form, -1,PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE);
397
398 ob_start();
399
400 $stack = array();
401
402 foreach ($form_parts as $form_part) {
403 if (substr($form_part,0,7) == '[group ') {
404 $tag_parts = explode(' ',rtrim($form_part,']'));
405
406 array_shift($tag_parts);
407
408 $tag_id = $tag_parts[0];
409 $tag_html_type = 'div';
410 $tag_html_data = array();
411
412 foreach ($tag_parts as $i => $tag_part) {
413 if ($i==0) continue;
414 else if ($tag_part == 'inline') $tag_html_type = 'span';
415 else if ($tag_part == 'clear_on_hide') $tag_html_data[] = 'data-clear_on_hide';
416 else if ($tag_part == 'disable_on_hide' && WPCF7CF_IS_PRO) $tag_html_data[] = 'data-disable_on_hide';
417 }
418
419 array_push($stack,$tag_html_type);
420
421 echo '<'.$tag_html_type.' data-id="'.$tag_id.'" data-orig_data_id="'.$tag_id.'" '.implode(' ',$tag_html_data).' data-class="wpcf7cf_group">';
422 } else if ($form_part == '[/group]') {
423 echo '</'.array_pop($stack).'>';
424 } else {
425 echo $form_part;
426 }
427 }
428
429 $properties['form'] = ob_get_clean();
430 }
431 return $properties;
432 }
433
434 add_action('wpcf7_form_hidden_fields', 'wpcf7cf_form_hidden_fields',10,1);
435
436 function wpcf7cf_form_hidden_fields($hidden_fields) {
437
438 $current_form = wpcf7_get_current_contact_form();
439 $current_form_id = $current_form->id();
440
441 $options = array(
442 'form_id' => $current_form_id,
443 'conditions' => CF7CF::getConditions($current_form_id),
444 'settings' => wpcf7cf_get_settings()
445 );
446
447 unset($options['settings']['license_key']); // don't show license key in the source code duh.
448
449 return array_merge($hidden_fields, array(
450 '_wpcf7cf_hidden_group_fields' => '',
451 '_wpcf7cf_hidden_groups' => '',
452 '_wpcf7cf_visible_groups' => '',
453 '_wpcf7cf_repeaters' => '[]',
454 '_wpcf7cf_steps' => '{}',
455 '_wpcf7cf_options' => ''.json_encode($options),
456 ));
457 }
458
459 function wpcf7cf_endswith($string, $test) {
460 $strlen = strlen($string);
461 $testlen = strlen($test);
462 if ($testlen > $strlen) return false;
463 return substr_compare($string, $test, $strlen - $testlen, $testlen) === 0;
464 }
465
466 add_filter( 'wpcf7_form_tag_data_option', 'wpcf7cf_form_tag_data_option', 10, 3 );
467
468 function wpcf7cf_form_tag_data_option($output, $args, $nog) {
469 $data = array();
470 return $data;
471 }
472
473 /* Scripts & Styles */
474
475 function wpcf7cf_load_js() {
476 return apply_filters( 'wpcf7cf_load_js', WPCF7CF_LOAD_JS );
477 }
478
479 function wpcf7cf_load_css() {
480 return apply_filters( 'wpcf7cf_load_css', WPCF7CF_LOAD_CSS );
481 }
482
483 add_action( 'wp_enqueue_scripts', 'wpcf7cf_do_enqueue_scripts', 20, 0 );
484
485 function wpcf7cf_do_enqueue_scripts() {
486 if ( wpcf7cf_load_js() ) {
487 wpcf7cf_enqueue_scripts();
488 }
489
490 if ( wpcf7cf_load_css() ) {
491 wpcf7cf_enqueue_styles();
492 }
493 }
494
495 function wpcf7cf_enqueue_scripts() {
496 if (is_admin()) return;
497 wp_enqueue_script('wpcf7cf-scripts', plugins_url('js/scripts.js', __FILE__), array('jquery'), WPCF7CF_VERSION, true);
498 wp_localize_script('wpcf7cf-scripts', 'wpcf7cf_global_settings',
499 array(
500 'ajaxurl' => admin_url('admin-ajax.php'),
501 )
502 );
503
504 }
505
506 function wpcf7cf_enqueue_styles() {
507 if (is_admin()) return;
508 wp_enqueue_style('cf7cf-style', plugins_url('style.css', __FILE__), array(), WPCF7CF_VERSION);
509 }