Title: Checkboxes and simple captcha bug Last modified: April 30, 2018 --- # Checkboxes and simple captcha bug * Resolved [tartarbar](https://wordpress.org/support/users/tartarbar/) * (@tartarbar) * [8 years, 1 month ago](https://wordpress.org/support/topic/checkboxes-and-simple-captcha-bug/) * Hello, required checkbox not checking and simple captcha always show error. Viewing 15 replies - 1 through 15 (of 16 total) 1 [2](https://wordpress.org/support/topic/checkboxes-and-simple-captcha-bug/page/2/?output_format=md) [→](https://wordpress.org/support/topic/checkboxes-and-simple-captcha-bug/page/2/?output_format=md) * Plugin Author [Aurovrata Venet](https://wordpress.org/support/users/aurovrata/) * (@aurovrata) * [8 years, 1 month ago](https://wordpress.org/support/topic/checkboxes-and-simple-captcha-bug/#post-10231732) * > required checkbox not checking * this is a cf7 issue, please enquire on the cf7 support forum. * > simple captcha always show error * did you check with cf7 forums? Have you following the cf7 [documentation](https://contactform7.com/captcha/) to get it to work? * Thread Starter [tartarbar](https://wordpress.org/support/users/tartarbar/) * (@tartarbar) * [8 years, 1 month ago](https://wordpress.org/support/topic/checkboxes-and-simple-captcha-bug/#post-10231749) * without “CF7 Smart Grid Design Extension” all work * Plugin Author [Aurovrata Venet](https://wordpress.org/support/users/aurovrata/) * (@aurovrata) * [8 years, 1 month ago](https://wordpress.org/support/topic/checkboxes-and-simple-captcha-bug/#post-10231859) * > without “CF7 Smart Grid Design Extension” all work * how do you expect me to help you if you don’t bother to post more details! * Thread Starter [tartarbar](https://wordpress.org/support/users/tartarbar/) * (@tartarbar) * [8 years, 1 month ago](https://wordpress.org/support/topic/checkboxes-and-simple-captcha-bug/#post-10232011) * $this->loader->add_filter( ‘wpcf7_validate’, $plugin_public, ‘filter_wpcf7_validate’, 30, 2 ); * problem in function “filter_wpcf7_validate” * Thread Starter [tartarbar](https://wordpress.org/support/users/tartarbar/) * (@tartarbar) * [8 years, 1 month ago](https://wordpress.org/support/topic/checkboxes-and-simple-captcha-bug/#post-10232016) * for “Simple captcha”: * you delete hidden field $data = $this->remove_hidden_fields_from_conditional_plugin( $data); where send captcha value * example: ⌊captcha⌉ * “_wpcf7_captcha_challenge_your-captcha” remove * and result always error * Thread Starter [tartarbar](https://wordpress.org/support/users/tartarbar/) * (@tartarbar) * [8 years, 1 month ago](https://wordpress.org/support/topic/checkboxes-and-simple-captcha-bug/#post-10232075) * for “Checkbox”: “public function filter_wpcf7_validate($result, $tags){” * when the checkbox is not set, it is not send in $_POST * “if(!isset($_POST[$tag[‘name’]])) continue;//not submitted==disabled.” * Thread Starter [tartarbar](https://wordpress.org/support/users/tartarbar/) * (@tartarbar) * [8 years, 1 month ago](https://wordpress.org/support/topic/checkboxes-and-simple-captcha-bug/#post-10232142) * can you add filter to disable “private function define_public_hooks() {“ * Plugin Author [Aurovrata Venet](https://wordpress.org/support/users/aurovrata/) * (@aurovrata) * [8 years, 1 month ago](https://wordpress.org/support/topic/checkboxes-and-simple-captcha-bug/#post-10232920) * > problem in function “filter_wpcf7_validate” * please don’t quote random lines of code, either provide constructive reviews or none at all. * > you delete hidden field > $data = $this->remove_hidden_fields_from_conditional_plugin( > $data); where send captcha value * no, this has nothing to do with the simple captcha. * > when the checkbox is not set, it is not send in $_POST > “if(!isset($_POST[$ > tag[‘name’]])) continue;//not submitted==disabled.” * indeed, this could be an issue for checkbox fields. I will check on my server and get back to you. * Thread Starter [tartarbar](https://wordpress.org/support/users/tartarbar/) * (@tartarbar) * [8 years, 1 month ago](https://wordpress.org/support/topic/checkboxes-and-simple-captcha-bug/#post-10233386) * ok) * the filter already comes with valid values and check captcha: file – /cf7-grid- layout/public/class-cf7-grid-layout-public.php string – 755, function ‘filter_wpcf7_validate’ * when you re-check captcha it already does not exist file – /cf7-grid-layout/ public/class-cf7-grid-layout-public.php string – 755, function ‘filter_wpcf7_validate’ $result = apply_filters( “wpcf7_validate_{$type}”, $result, $tag ); * because after checking the captcha is removed: file – /contact-form-7/modules/ really-simple-captcha.php * function wpcf7_captcha_validation_filter( $result, $tag ) { $type = $tag->type; $name = $tag->name; * $captchac = ‘_wpcf7_captcha_challenge_’ . $name; * $prefix = isset( $_POST[$captchac] ) ? (string) $_POST[$captchac] : ”; $response = isset( $_POST[$name] ) ? (string) $_POST[$name] : ”; $response = wpcf7_canonicalize( $response ); * if ( 0 == strlen( $prefix ) || ! wpcf7_check_captcha( $prefix, $response ) ){ $result->invalidate( $tag, wpcf7_get_message( ‘captcha_not_match’ ) ); } * if ( 0 != strlen( $prefix ) ) { wpcf7_remove_captcha( $prefix ); } * return $result; } * Thread Starter [tartarbar](https://wordpress.org/support/users/tartarbar/) * (@tartarbar) * [8 years, 1 month ago](https://wordpress.org/support/topic/checkboxes-and-simple-captcha-bug/#post-10233391) * sorry for my english is not good) * Thread Starter [tartarbar](https://wordpress.org/support/users/tartarbar/) * (@tartarbar) * [8 years, 1 month ago](https://wordpress.org/support/topic/checkboxes-and-simple-captcha-bug/#post-10233496) * > when you re-check captcha it already does not exist > file – /cf7-grid-layout/ > public/class-cf7-grid-layout-public.php string – 783, function ‘filter_wpcf7_validate’ > $result = apply_filters( “wpcf7_validate_{$type}”, $result, $tag ); * Plugin Author [Aurovrata Venet](https://wordpress.org/support/users/aurovrata/) * (@aurovrata) * [8 years, 1 month ago](https://wordpress.org/support/topic/checkboxes-and-simple-captcha-bug/#post-10237613) * so there was indeed a bug due to checkboxes not being submitted by default. * I just released v2.1.5 with a fix for these issue. I am not sure why the recaptcha was not working, but this is also working now. * Can you upgrade and let me know if it works for you now? * Thread Starter [tartarbar](https://wordpress.org/support/users/tartarbar/) * (@tartarbar) * [8 years, 1 month ago](https://wordpress.org/support/topic/checkboxes-and-simple-captcha-bug/#post-10237797) * checkboxes work fine, * not recaptcha, Really Simple CAPTCHA ([https://contactform7.com/captcha/](https://contactform7.com/captcha/)) * i described the problem above * Plugin Author [Aurovrata Venet](https://wordpress.org/support/users/aurovrata/) * (@aurovrata) * [8 years, 1 month ago](https://wordpress.org/support/topic/checkboxes-and-simple-captcha-bug/#post-10239210) * `[recaptcha]` is now the [recommended](https://contactform7.com/recaptcha/) and simpler way to include a captcha in your form. * Simple captcha plugin is not supported by the Smart-grid at this stage. * Maybe in the future I may add support if there is sufficient request for this. - This reply was modified 8 years, 1 month ago by [Aurovrata Venet](https://wordpress.org/support/users/aurovrata/). * Thread Starter [tartarbar](https://wordpress.org/support/users/tartarbar/) * (@tartarbar) * [8 years, 1 month ago](https://wordpress.org/support/topic/checkboxes-and-simple-captcha-bug/#post-10240060) * thank you Viewing 15 replies - 1 through 15 (of 16 total) 1 [2](https://wordpress.org/support/topic/checkboxes-and-simple-captcha-bug/page/2/?output_format=md) [→](https://wordpress.org/support/topic/checkboxes-and-simple-captcha-bug/page/2/?output_format=md) The topic ‘Checkboxes and simple captcha bug’ is closed to new replies. * ![](https://ps.w.org/cf7-grid-layout/assets/icon-256x256.png?rev=1834229) * [Smart Grid-Layout Design for Contact Form 7](https://wordpress.org/plugins/cf7-grid-layout/) * [Frequently Asked Questions](https://wordpress.org/plugins/cf7-grid-layout/#faq) * [Support Threads](https://wordpress.org/support/plugin/cf7-grid-layout/) * [Active Topics](https://wordpress.org/support/plugin/cf7-grid-layout/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/cf7-grid-layout/unresolved/) * [Reviews](https://wordpress.org/support/plugin/cf7-grid-layout/reviews/) * 16 replies * 2 participants * Last reply from: [Aurovrata Venet](https://wordpress.org/support/users/aurovrata/) * Last activity: [8 years, 1 month ago](https://wordpress.org/support/topic/checkboxes-and-simple-captcha-bug/page/2/#post-10240161) * Status: resolved