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Conditional Fields for Contact Form 7 / 1.7.1
Conditional Fields for Contact Form 7 v1.7.1
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cf7-conditional-fields / cf7cf.php
cf7-conditional-fields Last commit date
js 6 years ago Wpcf7cfMailParser.php 6 years ago admin-style.css 6 years ago admin-style.css.map 6 years ago admin-style.scss 6 years ago admin.php 6 years ago cf7cf.php 6 years ago contact-form-7-conditional-fields.php 6 years ago init.php 6 years ago readme.txt 6 years ago style.css 6 years ago tg_pane_group.php 6 years ago wpcf7cf-options.php 6 years ago
cf7cf.php
483 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 // check which fields are hidden during form submission and change some stuff accordingly
34 add_filter( 'wpcf7_posted_data', array($this, 'remove_hidden_post_data') );
35
36 add_filter( 'wpcf7_validate', array($this, 'skip_validation_for_hidden_fields'), 2, 2 );
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', 'wpcf7cf'),
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 $description = __( "Generate a group tag to group form elements that can be shown conditionally.", 'cf7cf' );
144
145 include 'tg_pane_group.php';
146 }
147
148 /**
149 * Remove validation requirements for fields that are hidden at the time of form submission.
150 * Called using add_filter( 'wpcf7_validate_[tag_type]', array($this, 'skip_validation_for_hidden_fields'), 2, 2 );
151 * where the priority of 2 causes this to kill any validations with a priority higher than 2
152 *
153 * @param $result
154 * @param $tag
155 *
156 * @return mixed
157 */
158 function skip_validation_for_hidden_fields($result, $tags) {
159
160 if(isset($_POST)) {
161 $this->set_hidden_fields_arrays($_POST);
162 }
163
164 $invalid_fields = $result->get_invalid_fields();
165 $return_result = new WPCF7_Validation();
166
167 if (count($this->hidden_fields) == 0 || !is_array($invalid_fields) || count($invalid_fields) == 0) {
168 $return_result = $result;
169 } else {
170 foreach ($invalid_fields as $invalid_field_key => $invalid_field_data) {
171 if (!in_array($invalid_field_key, $this->hidden_fields)) {
172 // the invalid field is not a hidden field, so we'll add it to the final validation result
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 /**
184 * When a CF7 form is posted, check the form for hidden fields, then remove those fields from the post data
185 *
186 * @param $posted_data
187 *
188 * @return mixed
189 */
190 function remove_hidden_post_data($posted_data) {
191 $this->set_hidden_fields_arrays($posted_data);
192
193 // TODO: activating the code below will change the behaviour of the plugin, as all hidden fields will not be POSTed.
194 // We might consider activating this based on a setting in the future. But for now, we're not gonna use it.
195
196 // foreach( $this->hidden_fields as $name => $value ) {
197 // unset( $posted_data[$value] ); // Yes, it should be $value, not $name. https://github.com/pwkip/contact-form-7-conditional-fields/pull/17
198 // }
199
200 return $posted_data;
201 }
202
203 function cf7msm_merge_post_with_cookie($posted_data) {
204
205 if (!function_exists('cf7msm_get') || !key_exists('cf7msm_posted_data',$_COOKIE)) return $posted_data;
206
207 if (!$posted_data) {
208 $posted_data = WPCF7_Submission::get_instance()->get_posted_data();
209 }
210
211 // this will temporarily set the hidden fields data to the posted_data.
212 // later this function will be called again with the updated posted_data
213 $this->set_hidden_fields_arrays($posted_data);
214
215 // get cookie data
216 $cookie_data = cf7msm_get('cf7msm_posted_data');
217 $cookie_data_hidden_group_fields = json_decode(stripslashes($cookie_data['_wpcf7cf_hidden_group_fields']));
218 $cookie_data_hidden_groups = json_decode(stripslashes($cookie_data['_wpcf7cf_hidden_groups']));
219 $cookie_data_visible_groups = json_decode(stripslashes($cookie_data['_wpcf7cf_visible_groups']));
220
221 // remove all the currently posted data from the cookie data (we don't wanna add it twice)
222 $cookie_data_hidden_group_fields = array_diff($cookie_data_hidden_group_fields, array_keys($posted_data));
223 $cookie_data_hidden_groups = array_diff((array) $cookie_data_hidden_groups, $this->hidden_groups, $this->visible_groups);
224 $cookie_data_visible_groups = array_diff((array) $cookie_data_visible_groups, $this->hidden_groups, $this->visible_groups);
225
226 // update current post data with cookie data
227 $posted_data['_wpcf7cf_hidden_group_fields'] = addslashes(json_encode(array_merge((array) $cookie_data_hidden_group_fields, $this->hidden_fields)));
228 $posted_data['_wpcf7cf_hidden_groups'] = addslashes(json_encode(array_merge((array) $cookie_data_hidden_groups, $this->hidden_groups)));
229 $posted_data['_wpcf7cf_visible_groups'] = addslashes(json_encode(array_merge((array) $cookie_data_visible_groups, $this->visible_groups)));
230
231 return $posted_data;
232 }
233
234 // compatibility with CF7 Multi Step by NinjaTeam https://wordpress.org/plugins/cf7-multi-step/
235 function cf7mls_validation_callback() {
236 $this->set_hidden_fields_arrays($_POST);
237 }
238
239 /**
240 * Finds the currently submitted form and set the hidden_fields variables accoringly
241 *
242 * @param bool|array $posted_data
243 */
244 function set_hidden_fields_arrays($posted_data = false) {
245
246 if (!$posted_data) {
247 $posted_data = WPCF7_Submission::get_instance()->get_posted_data();
248 }
249
250 $hidden_fields = json_decode(stripslashes($posted_data['_wpcf7cf_hidden_group_fields']));
251 if (is_array($hidden_fields) && count($hidden_fields) > 0) {
252 foreach ($hidden_fields as $field) {
253 $this->hidden_fields[] = $field;
254 if (wpcf7cf_endswith($field, '[]')) {
255 $this->hidden_fields[] = substr($field,0,strlen($field)-2);
256 }
257 }
258 }
259 $this->hidden_groups = json_decode(stripslashes($posted_data['_wpcf7cf_hidden_groups']));
260 $this->visible_groups = json_decode(stripslashes($posted_data['_wpcf7cf_visible_groups']));
261 $this->repeaters = json_decode(stripslashes($posted_data['_wpcf7cf_repeaters']));
262 $this->steps = json_decode(stripslashes($posted_data['_wpcf7cf_steps']));
263 }
264
265 function hide_hidden_mail_fields($form,$abort,$submission) {
266 $props = $form->get_properties();
267 $mails = ['mail','mail_2','messages'];
268 foreach ($mails as $mail) {
269 foreach ($props[$mail] as $key=>$val) {
270
271 $parser = new Wpcf7cfMailParser($val, $this->visible_groups, $this->hidden_groups, $this->repeaters, $_POST);
272
273 // $props[$mail][$key] = preg_replace_callback(WPCF7CF_REGEX_MAIL_GROUP, array($this, 'hide_hidden_mail_fields_regex_callback'), $val );
274 $props[$mail][$key] = $parser->getParsedMail();
275 }
276 }
277 //$props['mail']['body'] = 'xxx';
278 $form->set_properties($props);
279 }
280
281 function hide_hidden_mail_fields_regex_callback ( $matches ) {
282 $name = $matches[1];
283 $content = $matches[2];
284 if ( in_array( $name, $this->hidden_groups ) ) {
285 // The tag name represents a hidden group, so replace everything from [tagname] to [/tagname] with nothing
286 return '';
287 } elseif ( in_array( $name, $this->visible_groups ) ) {
288 // The tag name represents a visible group, so remove the tags themselves, but return everything else
289 // instead of just returning the $content, return the preg_replaced content :)
290 return preg_replace_callback(WPCF7CF_REGEX_MAIL_GROUP, array($this, 'hide_hidden_mail_fields_regex_callback'), $content );
291 } else {
292 // The tag name doesn't represent a group that was used in the form. Leave it alone (return the entire match).
293 return $matches[0];
294 }
295 }
296
297 public static function parse_conditions($string, $format='array') {
298 // Parse stuff like "show [g1] if [field] equals 2" to Array
299
300 preg_match_all(WPCF7CF_REGEX_CONDITIONS, $string, $matches);
301
302 $conditions = [];
303
304 $prev_then_field = '';
305 foreach ($matches[0] as $i=>$line) {
306 $then_field = $matches[1][$i];
307 $if_field = $matches[2][$i];
308 $operator = $matches[3][$i];
309 $if_value = $matches[4][$i];
310
311 $index = count($conditions);
312
313 if ($then_field == '') {
314 $index = $index -1;
315 $then_field = $prev_then_field;
316 } else {
317 $conditions[$index]['then_field'] = $then_field;
318 }
319
320 $conditions[$index]['and_rules'][] = [
321 'if_field' => $if_field,
322 'operator' => $operator,
323 'if_value' => $if_value,
324 ];
325
326 $prev_then_field = $then_field;
327
328 }
329
330 $conditions = array_values($conditions);
331
332 if ($format == 'array') {
333 return $conditions;
334 } else if ($format == 'json') {
335 return json_encode($conditions);
336 }
337 }
338
339 /**
340 * load the conditions from the form's post_meta
341 *
342 * @param string $form_id
343 * @return void
344 */
345 public static function getConditions($form_id) {
346 return get_post_meta($form_id,'wpcf7cf_options',true); // the meta key 'wpcf7cf_options' is a bit misleading at this point, because it only holds the form's conditions, no other options/settings
347 }
348
349
350 /**
351 * save the conditions to the form's post_meta
352 *
353 * @param string $form_id
354 * @return void
355 */
356 public static function setConditions($form_id, $conditions) {
357 return update_post_meta($form_id,'wpcf7cf_options',$conditions); // the meta key 'wpcf7cf_options' is a bit misleading at this point, because it only holds the form's conditions, no other options/settings
358 }
359 }
360
361 new CF7CF;
362
363 add_filter( 'wpcf7_contact_form_properties', 'wpcf7cf_properties', 10, 2 );
364
365 function wpcf7cf_properties($properties, $wpcf7form) {
366 // TODO: This function is called serveral times. The problem is that the filter is called each time we call get_properties() on a contact form.
367 // TODO: I haven't found a better way to solve this problem yet, any suggestions or push requests are welcome. (same problem in PRO/repeater.php)
368 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.
369 $form = $properties['form'];
370
371 $form_parts = preg_split('/(\[\/?group(?:\]|\s.*?\]))/',$form, -1,PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE);
372
373 ob_start();
374
375 $stack = array();
376
377 foreach ($form_parts as $form_part) {
378 if (substr($form_part,0,7) == '[group ') {
379 $tag_parts = explode(' ',rtrim($form_part,']'));
380
381 array_shift($tag_parts);
382
383 $tag_id = $tag_parts[0];
384 $tag_html_type = 'div';
385 $tag_html_data = array();
386
387 foreach ($tag_parts as $i => $tag_part) {
388 if ($i==0) continue;
389 else if ($tag_part == 'inline') $tag_html_type = 'span';
390 else if ($tag_part == 'clear_on_hide') $tag_html_data[] = 'data-clear_on_hide';
391 }
392
393 array_push($stack,$tag_html_type);
394
395 echo '<'.$tag_html_type.' data-id="'.$tag_id.'" data-orig_data_id="'.$tag_id.'" '.implode(' ',$tag_html_data).' data-class="wpcf7cf_group">';
396 } else if ($form_part == '[/group]') {
397 echo '</'.array_pop($stack).'>';
398 } else {
399 echo $form_part;
400 }
401 }
402
403 $properties['form'] = ob_get_clean();
404 }
405 return $properties;
406 }
407
408 add_action('wpcf7_form_hidden_fields', 'wpcf7cf_form_hidden_fields',10,1);
409
410 function wpcf7cf_form_hidden_fields($hidden_fields) {
411
412 $current_form = wpcf7_get_current_contact_form();
413 $current_form_id = $current_form->id();
414
415 $options = array(
416 'form_id' => $current_form_id,
417 'conditions' => CF7CF::getConditions($current_form_id),
418 'settings' => get_option(WPCF7CF_OPTIONS)
419 );
420
421 unset($options['settings']['license_key']); // don't show license key in the source code duh.
422
423 return array_merge($hidden_fields, array(
424 '_wpcf7cf_hidden_group_fields' => '',
425 '_wpcf7cf_hidden_groups' => '',
426 '_wpcf7cf_visible_groups' => '',
427 '_wpcf7cf_repeaters' => '[]',
428 '_wpcf7cf_steps' => '{}',
429 '_wpcf7cf_options' => ''.json_encode($options),
430 ));
431 }
432
433 function wpcf7cf_endswith($string, $test) {
434 $strlen = strlen($string);
435 $testlen = strlen($test);
436 if ($testlen > $strlen) return false;
437 return substr_compare($string, $test, $strlen - $testlen, $testlen) === 0;
438 }
439
440 add_filter( 'wpcf7_form_tag_data_option', 'wpcf7cf_form_tag_data_option', 10, 3 );
441
442 function wpcf7cf_form_tag_data_option($output, $args, $nog) {
443 $data = array();
444 return $data;
445 }
446
447 /* Scripts & Styles */
448
449 function wpcf7cf_load_js() {
450 return apply_filters( 'wpcf7cf_load_js', WPCF7CF_LOAD_JS );
451 }
452
453 function wpcf7cf_load_css() {
454 return apply_filters( 'wpcf7cf_load_css', WPCF7CF_LOAD_CSS );
455 }
456
457 add_action( 'wp_enqueue_scripts', 'wpcf7cf_do_enqueue_scripts', 20, 0 );
458
459 function wpcf7cf_do_enqueue_scripts() {
460 if ( wpcf7cf_load_js() ) {
461 wpcf7cf_enqueue_scripts();
462 }
463
464 if ( wpcf7cf_load_css() ) {
465 wpcf7cf_enqueue_styles();
466 }
467 }
468
469 function wpcf7cf_enqueue_scripts() {
470 if (is_admin()) return;
471 wp_enqueue_script('wpcf7cf-scripts', plugins_url('js/scripts.js', __FILE__), array('jquery'), WPCF7CF_VERSION, true);
472 wp_localize_script('wpcf7cf-scripts', 'wpcf7cf_global_settings',
473 array(
474 'ajaxurl' => admin_url('admin-ajax.php'),
475 )
476 );
477
478 }
479
480 function wpcf7cf_enqueue_styles() {
481 if (is_admin()) return;
482 wp_enqueue_style('cf7cf-style', plugins_url('style.css', __FILE__), array(), WPCF7CF_VERSION);
483 }