cf7-conditional-fields
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contact-form-7-conditional-fields.php
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cf7cf.php
347 lines
| 1 | <?php |
| 2 | class ContactForm7ConditionalFields { |
| 3 | private $hidden_fields = array(); |
| 4 | private $visible_groups = array(); |
| 5 | private $hidden_groups = array(); |
| 6 | |
| 7 | function __construct() { |
| 8 | |
| 9 | add_action('wpcf7_enqueue_scripts', array(__CLASS__, 'enqueue_js')); |
| 10 | add_action('wpcf7_enqueue_styles', array(__CLASS__, 'enqueue_css')); |
| 11 | |
| 12 | // Register shortcodes |
| 13 | add_action('wpcf7_init', array(__CLASS__, 'add_shortcodes')); |
| 14 | |
| 15 | // Tag generator |
| 16 | add_action('load-contact_page_wpcf7-new', array(__CLASS__, 'tag_generator')); |
| 17 | add_action('load-toplevel_page_wpcf7', array(__CLASS__, 'tag_generator')); |
| 18 | |
| 19 | // compatibility with CF7 multi-step forms by Webhead LLC. |
| 20 | add_filter( 'wpcf7_posted_data', array($this,'cf7msm_merge_post_with_cookie'), 8, 1 ); |
| 21 | |
| 22 | // compatibility with CF7 Multi Step by NinjaTeam https://wordpress.org/plugins/cf7-multi-step/ |
| 23 | add_action('wp_ajax_cf7mls_validation', array($this,'cf7mls_validation_callback'),9); |
| 24 | add_action('wp_ajax_nopriv_cf7mls_validation', array($this,'cf7mls_validation_callback'),9); |
| 25 | |
| 26 | add_filter( 'wpcf7_posted_data', array($this, 'remove_hidden_post_data') ); |
| 27 | add_filter( 'wpcf7_mail_components', array($this, 'hide_hidden_mail_fields') ); |
| 28 | add_filter('wpcf7_additional_mail', array($this, 'hide_hidden_mail_fields_additional_mail'), 10, 2); |
| 29 | |
| 30 | add_filter( 'wpcf7_validate', array($this, 'skip_validation_for_hidden_fields'), 2, 2 ); |
| 31 | |
| 32 | register_activation_hook(__FILE__, array($this, 'activate')); |
| 33 | |
| 34 | if (is_admin()) { |
| 35 | require_once dirname(__FILE__) . '/admin.php'; |
| 36 | } |
| 37 | } |
| 38 | |
| 39 | function activate() { |
| 40 | //add options with add_option and stuff |
| 41 | } |
| 42 | |
| 43 | public static function enqueue_js() { |
| 44 | // nothing here. We will only load the CF7 script if there is a CF7 form on the page. |
| 45 | } |
| 46 | |
| 47 | public static function enqueue_css() { |
| 48 | wp_enqueue_style('cf7cf-style', plugins_url('style.css', __FILE__), array(), WPCF7CF_VERSION); |
| 49 | } |
| 50 | |
| 51 | public static function add_shortcodes() { |
| 52 | //wpcf7_add_shortcode('group', array(__CLASS__, 'shortcode_handler'), true); |
| 53 | //add_shortcode( 'group', array(__CLASS__, 'group_shortcode_handler') ); |
| 54 | if (function_exists('wpcf7_add_form_tag')) |
| 55 | wpcf7_add_form_tag('group', array(__CLASS__, 'shortcode_handler'), true); |
| 56 | else if (function_exists('wpcf7_add_shortcode')) { |
| 57 | wpcf7_add_shortcode('group', array(__CLASS__, 'shortcode_handler'), true); |
| 58 | } else { |
| 59 | throw new Exception('functions wpcf7_add_form_tag and wpcf7_add_shortcode not found.'); |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | function group_shortcode_handler( $atts, $content = "" ) { |
| 64 | return $content; |
| 65 | } |
| 66 | |
| 67 | function shortcode_handler($tag) { |
| 68 | //$tag = new WPCF7_Shortcode($tag); |
| 69 | $tag = new WPCF7_FormTag($tag); |
| 70 | //ob_start(); |
| 71 | //print_r($tag); |
| 72 | //return print_r($tag, true); |
| 73 | return $tag->content; |
| 74 | } |
| 75 | |
| 76 | |
| 77 | public static function tag_generator() { |
| 78 | if (! function_exists( 'wpcf7_add_tag_generator')) |
| 79 | return; |
| 80 | |
| 81 | wpcf7_add_tag_generator('group', |
| 82 | __('Conditional fields Group', 'wpcf7cf'), |
| 83 | 'wpcf7-tg-pane-group', |
| 84 | array(__CLASS__, 'tg_pane') |
| 85 | ); |
| 86 | } |
| 87 | |
| 88 | static function tg_pane( $contact_form, $args = '' ) { |
| 89 | $args = wp_parse_args( $args, array() ); |
| 90 | $type = 'group'; |
| 91 | |
| 92 | $description = __( "Generate a group tag to group form elements that can be shown conditionally.", 'cf7cf' ); |
| 93 | |
| 94 | ?> |
| 95 | <div class="control-box"> |
| 96 | <fieldset> |
| 97 | <legend><?php echo sprintf( esc_html( $description ) ); ?></legend> |
| 98 | |
| 99 | <table class="form-table"> |
| 100 | <tbody> |
| 101 | |
| 102 | <tr> |
| 103 | <th scope="row"><label for="<?php echo esc_attr( $args['content'] . '-name' ); ?>"><?php echo esc_html( __( 'Name', 'contact-form-7' ) ); ?></label></th> |
| 104 | <td><input type="text" name="name" class="tg-name oneline" id="<?php echo esc_attr( $args['content'] . '-name' ); ?>" /></td> |
| 105 | </tr> |
| 106 | |
| 107 | </tbody> |
| 108 | </table> |
| 109 | </fieldset> |
| 110 | </div> |
| 111 | |
| 112 | <div class="insert-box"> |
| 113 | <input type="text" name="<?php echo $type; ?>" class="tag code" readonly="readonly" onfocus="this.select()" /> |
| 114 | |
| 115 | <div class="submitbox"> |
| 116 | <input type="button" class="button button-primary insert-tag" value="<?php echo esc_attr( __( 'Insert Tag', 'contact-form-7' ) ); ?>" /> |
| 117 | </div> |
| 118 | |
| 119 | <br class="clear" /> |
| 120 | </div> |
| 121 | <?php |
| 122 | } |
| 123 | |
| 124 | /** |
| 125 | * Remove validation requirements for fields that are hidden at the time of form submission. |
| 126 | * Called using add_filter( 'wpcf7_validate_[tag_type]', array($this, 'skip_validation_for_hidden_fields'), 2, 2 ); |
| 127 | * where the priority of 2 causes this to kill any validations with a priority higher than 2 |
| 128 | * |
| 129 | * @param $result |
| 130 | * @param $tag |
| 131 | * |
| 132 | * @return mixed |
| 133 | */ |
| 134 | function skip_validation_for_hidden_fields($result, $tags) { |
| 135 | |
| 136 | if (count($this->hidden_fields) == 0) return $result; |
| 137 | |
| 138 | $return_result = new WPCF7_Validation(); |
| 139 | |
| 140 | $invalid_fields = $result->get_invalid_fields(); |
| 141 | |
| 142 | if (!is_array($invalid_fields) || count($invalid_fields) == 0) return $result; |
| 143 | |
| 144 | foreach ($invalid_fields as $invalid_field_key => $invalid_field_data) { |
| 145 | if (!in_array($invalid_field_key, $this->hidden_fields)) { |
| 146 | // the invalid field is not a hidden field, so we'll add it to the final validation result |
| 147 | $return_result->invalidate($invalid_field_key, $invalid_field_data['reason']); |
| 148 | } |
| 149 | } |
| 150 | |
| 151 | return $return_result; |
| 152 | } |
| 153 | |
| 154 | |
| 155 | /** |
| 156 | * When a CF7 form is posted, check the form for hidden fields, then remove those fields from the post data |
| 157 | * |
| 158 | * @param $posted_data |
| 159 | * |
| 160 | * @return mixed |
| 161 | */ |
| 162 | function remove_hidden_post_data($posted_data) { |
| 163 | $this->set_hidden_fields_arrays($posted_data); |
| 164 | |
| 165 | foreach( $this->hidden_fields as $name => $value ) { |
| 166 | unset( $posted_data[$name] ); |
| 167 | } |
| 168 | |
| 169 | return $posted_data; |
| 170 | } |
| 171 | |
| 172 | function cf7msm_merge_post_with_cookie($posted_data) { |
| 173 | |
| 174 | if (!function_exists('cf7msm_get')) return $posted_data; |
| 175 | |
| 176 | if (!$posted_data) { |
| 177 | $posted_data = WPCF7_Submission::get_instance()->get_posted_data(); |
| 178 | } |
| 179 | |
| 180 | // this will temporarily set the hidden fields data to the posted_data. |
| 181 | // later this function will be called again with the updated posted_data |
| 182 | $this->set_hidden_fields_arrays($posted_data); |
| 183 | |
| 184 | // get cookie data |
| 185 | $cookie_data = cf7msm_get('cf7msm_posted_data'); |
| 186 | $cookie_data_hidden_group_fields = json_decode(stripslashes($cookie_data['_wpcf7cf_hidden_group_fields'])); |
| 187 | $cookie_data_hidden_groups = json_decode(stripslashes($cookie_data['_wpcf7cf_hidden_groups'])); |
| 188 | $cookie_data_visible_groups = json_decode(stripslashes($cookie_data['_wpcf7cf_visible_groups'])); |
| 189 | |
| 190 | // remove all the currently posted data from the cookie data (we don't wanna add it twice) |
| 191 | $cookie_data_hidden_group_fields = array_diff($cookie_data_hidden_group_fields, array_keys($posted_data)); |
| 192 | $cookie_data_hidden_groups = array_diff((array) $cookie_data_hidden_groups, $this->hidden_groups, $this->visible_groups); |
| 193 | $cookie_data_visible_groups = array_diff((array) $cookie_data_visible_groups, $this->hidden_groups, $this->visible_groups); |
| 194 | |
| 195 | // update current post data with cookie data |
| 196 | $posted_data['_wpcf7cf_hidden_group_fields'] = addslashes(json_encode(array_merge((array) $cookie_data_hidden_group_fields, $this->hidden_fields))); |
| 197 | $posted_data['_wpcf7cf_hidden_groups'] = addslashes(json_encode(array_merge((array) $cookie_data_hidden_groups, $this->hidden_groups))); |
| 198 | $posted_data['_wpcf7cf_visible_groups'] = addslashes(json_encode(array_merge((array) $cookie_data_visible_groups, $this->visible_groups))); |
| 199 | |
| 200 | return $posted_data; |
| 201 | } |
| 202 | |
| 203 | // compatibility with CF7 Multi Step by NinjaTeam https://wordpress.org/plugins/cf7-multi-step/ |
| 204 | function cf7mls_validation_callback() { |
| 205 | $this->set_hidden_fields_arrays($_POST); |
| 206 | } |
| 207 | |
| 208 | |
| 209 | /** |
| 210 | * Finds the currently submitted form and set the hidden_fields variables accoringly |
| 211 | * |
| 212 | * @param bool|array $posted_data |
| 213 | */ |
| 214 | function set_hidden_fields_arrays($posted_data = false) { |
| 215 | |
| 216 | if (!$posted_data) { |
| 217 | $posted_data = WPCF7_Submission::get_instance()->get_posted_data(); |
| 218 | } |
| 219 | |
| 220 | $hidden_fields = json_decode(stripslashes($posted_data['_wpcf7cf_hidden_group_fields'])); |
| 221 | if (is_array($hidden_fields) && count($hidden_fields) > 0) { |
| 222 | foreach ($hidden_fields as $field) { |
| 223 | $this->hidden_fields[] = $field; |
| 224 | if (wpcf7cf_endswith($field, '[]')) { |
| 225 | $this->hidden_fields[] = substr($field,0,strlen($field)-2); |
| 226 | } |
| 227 | } |
| 228 | } |
| 229 | $this->hidden_groups = json_decode(stripslashes($posted_data['_wpcf7cf_hidden_groups'])); |
| 230 | $this->visible_groups = json_decode(stripslashes($posted_data['_wpcf7cf_visible_groups'])); |
| 231 | } |
| 232 | |
| 233 | function hide_hidden_mail_fields( $components ) { |
| 234 | $regex = '@\[[\t ]*([a-zA-Z_][0-9a-zA-Z:._-]*)[\t ]*\](.*?)\[[\t ]*/[\t ]*\1[\t ]*\]@s'; |
| 235 | // [1] = name [2] = contents |
| 236 | |
| 237 | $components['body'] = preg_replace_callback($regex, array($this, 'hide_hidden_mail_fields_regex_callback'), $components['body'] ); |
| 238 | $components['subject'] = preg_replace_callback($regex, array($this, 'hide_hidden_mail_fields_regex_callback'), $components['subject'] ); |
| 239 | $components['sender'] = preg_replace_callback($regex, array($this, 'hide_hidden_mail_fields_regex_callback'), $components['sender'] ); |
| 240 | $components['recipient'] = preg_replace_callback($regex, array($this, 'hide_hidden_mail_fields_regex_callback'), $components['recipient'] ); |
| 241 | $components['additional_headers'] = preg_replace_callback($regex, array($this, 'hide_hidden_mail_fields_regex_callback'), $components['additional_headers'] ); |
| 242 | |
| 243 | return $components; |
| 244 | } |
| 245 | |
| 246 | function hide_hidden_mail_fields_additional_mail($additional_mail, $contact_form) { |
| 247 | |
| 248 | if (!is_array($additional_mail) || !array_key_exists('mail_2', $additional_mail)) return $additional_mail; |
| 249 | |
| 250 | $regex = '@\[[\t ]*([a-zA-Z_][0-9a-zA-Z:._-]*)[\t ]*\](.*?)\[[\t ]*/[\t ]*\1[\t ]*\]@s'; |
| 251 | |
| 252 | $additional_mail['mail_2']['body'] = preg_replace_callback($regex, array($this, 'hide_hidden_mail_fields_regex_callback'), $additional_mail['mail_2']['body'] ); |
| 253 | $additional_mail['mail_2']['subject'] = preg_replace_callback($regex, array($this, 'hide_hidden_mail_fields_regex_callback'), $additional_mail['mail_2']['subject'] ); |
| 254 | $additional_mail['mail_2']['sender'] = preg_replace_callback($regex, array($this, 'hide_hidden_mail_fields_regex_callback'), $additional_mail['mail_2']['sender'] ); |
| 255 | $additional_mail['mail_2']['recipient'] = preg_replace_callback($regex, array($this, 'hide_hidden_mail_fields_regex_callback'), $additional_mail['mail_2']['recipient'] ); |
| 256 | $additional_mail['mail_2']['additional_headers'] = preg_replace_callback($regex, array($this, 'hide_hidden_mail_fields_regex_callback'), $additional_mail['mail_2']['additional_headers'] ); |
| 257 | |
| 258 | return $additional_mail; |
| 259 | } |
| 260 | |
| 261 | function hide_hidden_mail_fields_regex_callback ( $matches ) { |
| 262 | $name = $matches[1]; |
| 263 | $content = $matches[2]; |
| 264 | if ( in_array( $name, $this->hidden_groups ) ) { |
| 265 | // The tag name represents a hidden group, so replace everything from [tagname] to [/tagname] with nothing |
| 266 | return ''; |
| 267 | } elseif ( in_array( $name, $this->visible_groups ) ) { |
| 268 | // The tag name represents a visible group, so remove the tags themselves, but return everything else |
| 269 | //return $content; |
| 270 | $regex = '@\[[\t ]*([a-zA-Z_][0-9a-zA-Z:._-]*)[\t ]*\](.*?)\[[\t ]*/[\t ]*\1[\t ]*\]@s'; |
| 271 | |
| 272 | // instead of just returning the $content, return the preg_replaced content :) |
| 273 | return preg_replace_callback($regex, array($this, 'hide_hidden_mail_fields_regex_callback'), $content ); |
| 274 | } else { |
| 275 | // The tag name doesn't represent a group that was used in the form. Leave it alone (return the entire match). |
| 276 | return $matches[0]; |
| 277 | } |
| 278 | } |
| 279 | } |
| 280 | |
| 281 | new ContactForm7ConditionalFields; |
| 282 | |
| 283 | add_filter( 'wpcf7_contact_form_properties', 'wpcf7cf_properties', 10, 2 ); |
| 284 | |
| 285 | function wpcf7cf_properties($properties, $wpcf7form) { |
| 286 | if (!is_admin()) { // TODO: kind of hacky. maybe find a better solution. Needed because otherwise the group tags will be replaced in the editor as well. |
| 287 | $form = $properties['form']; |
| 288 | |
| 289 | $find = array( |
| 290 | '/\[group\s*\]/s', // matches [group ] or [group] |
| 291 | '/\[group\s+([^\s\]]*)\s*([^\]]*)\]/s', // matches [group something some:thing] or [group something som ] |
| 292 | // doesn't match [group-special something] |
| 293 | '/\[\/group\]/s' |
| 294 | ); |
| 295 | |
| 296 | $replace = array( |
| 297 | '<div data-class="wpcf7cf_group">', |
| 298 | '<div id="$1" data-class="wpcf7cf_group">', |
| 299 | '</div>' |
| 300 | ); |
| 301 | |
| 302 | $form = preg_replace( $find, $replace, $form ); |
| 303 | |
| 304 | $properties['form'] = $form; |
| 305 | } |
| 306 | return $properties; |
| 307 | } |
| 308 | |
| 309 | $global_count = 0; |
| 310 | |
| 311 | add_action('wpcf7_contact_form', 'wpcf7cf_enqueue_scripts', 10, 1); |
| 312 | function wpcf7cf_enqueue_scripts(WPCF7_ContactForm $cf7form) { |
| 313 | |
| 314 | if (is_admin()) return; |
| 315 | |
| 316 | global $global_count, $post; |
| 317 | $global_count++; |
| 318 | |
| 319 | if ( in_the_loop() ) { |
| 320 | $post_id = empty($post->ID) ? '0' : $post->ID; |
| 321 | $unit_tag = 'wpcf7-f'.$cf7form->id().'-p'.$post_id.'-o'.$global_count; |
| 322 | } else { |
| 323 | $unit_tag = 'wpcf7-f'.$cf7form->id().'-o'.$global_count; |
| 324 | } |
| 325 | |
| 326 | $options = array( |
| 327 | 'form_id' => $cf7form->id(), |
| 328 | 'unit_tag' => $unit_tag, |
| 329 | 'conditions' => get_post_meta($cf7form->id(),'wpcf7cf_options', true), |
| 330 | ); |
| 331 | |
| 332 | wp_enqueue_script('cf7cf-scripts', plugins_url('js/scripts.js', __FILE__), array('jquery'), WPCF7CF_VERSION, true); |
| 333 | wp_localize_script('cf7cf-scripts', 'wpcf7cf_options_'.$global_count, $options); |
| 334 | } |
| 335 | |
| 336 | add_action('wpcf7_form_hidden_fields', 'wpcf7cf_form_hidden_fields',10,1); |
| 337 | |
| 338 | function wpcf7cf_form_hidden_fields($hidden_fields) { |
| 339 | return array('_wpcf7cf_hidden_group_fields' => '', '_wpcf7cf_hidden_groups' => '', '_wpcf7cf_visible_groups' => ''); |
| 340 | } |
| 341 | |
| 342 | function wpcf7cf_endswith($string, $test) { |
| 343 | $strlen = strlen($string); |
| 344 | $testlen = strlen($test); |
| 345 | if ($testlen > $strlen) return false; |
| 346 | return substr_compare($string, $test, $strlen - $testlen, $testlen) === 0; |
| 347 | } |