https://www.machform.com/forums/ MachForm Community Forums Topic: Require 2 of 5 multiple choice answers en Wed, 06 May 2026 16:02:57 +0000 https://www.machform.com/forums/topic/require-2-of-5-multiple-choice-answers#post-18515 Thu, 13 Jun 2013 13:16:23 +0000 chriskoeling 18515@https://www.machform.com/forums/ <p>I see that is also a good solution: <a href="http://www.appnitro.com/forums/topic/limiting-checkbox-choices" rel="nofollow">http://www.appnitro.com/forums/topic/limiting-checkbox-choices</a> </p> https://www.machform.com/forums/topic/require-2-of-5-multiple-choice-answers#post-18514 Thu, 13 Jun 2013 13:14:22 +0000 chriskoeling 18514@https://www.machform.com/forums/ <p>Can someone tell me if this is still actual. I can imagine this will be an option in a new release? </p> https://www.machform.com/forums/topic/require-2-of-5-multiple-choice-answers#post-12428 Fri, 05 Aug 2011 21:17:03 +0000 yuniar 12428@https://www.machform.com/forums/ <p>can you send us your modified file and let us know the URL to your form please?<br /> We'll check it.</p> <p>You can send it via email: customer.service [at] appnitro.com </p> https://www.machform.com/forums/topic/require-2-of-5-multiple-choice-answers#post-12424 Fri, 05 Aug 2011 00:03:54 +0000 delvalcollege 12424@https://www.machform.com/forums/ <p>This is not working for me. I changed the element ID and form ID. The error message defaults to the "required" message, and when I select only one of the checkboxes, it still throws an error. Has something changed since this was posted? </p> https://www.machform.com/forums/topic/require-2-of-5-multiple-choice-answers#post-8059 Fri, 27 Nov 2009 18:22:03 +0000 pbadcock 8059@https://www.machform.com/forums/ <p>That sorted it, the fault was my end. Thanks very much for your help, sorry to trouble you. </p> https://www.machform.com/forums/topic/require-2-of-5-multiple-choice-answers#post-8055 Fri, 27 Nov 2009 11:04:32 +0000 redityo 8055@https://www.machform.com/forums/ <p>Hi Peter,</p> <p>From the error message :</p> <p>Error sending email: SMTP Error: The following recipients failed: {element_2}</p> <p>It seems the problem come from your mail setting. To fix it, try to re-set form mail setting and then try to submit the form again.</p> <p>Anyway if you restore the file to original state, will it solve the problem ? I think the problem not come from this customization </p> https://www.machform.com/forums/topic/require-2-of-5-multiple-choice-answers#post-8051 Fri, 27 Nov 2009 00:59:07 +0000 pbadcock 8051@https://www.machform.com/forums/ <p>I've just tried this and the validation works fine, but when I correct and submit the form I get this message:</p> <p>Error sending email: SMTP Error: The following recipients failed: {element_2}<br /> Warning: Cannot modify header information - headers already sent by (output started at /home/ihbconli/public_html/machnew/machform2/includes/helper-functions.php:482) in /home/ihbconli/public_html/machnew/machform2/confirm.php on line 38</p> <p>However, the form submission is sent successfully, but the error message would put most users off.</p> <p>The same form sent fine before I did the alterations. I get the same error message if I attempt to send the form with the correct number of boxes ticked, if that helps.</p> <p>Can anyone help? I would love to use this addition,</p> <p>Peter </p> https://www.machform.com/forums/topic/require-2-of-5-multiple-choice-answers#post-7367 Sun, 20 Sep 2009 12:31:18 +0000 redityo 7367@https://www.machform.com/forums/ <p>Hi,</p> <p>Multiple selection in "multiple choice" field it not possible, however you can use a "check box fiald" and add a custom validation to the field, so your user will allowed to fill 2 options. To do so, you need to edit "includes/post-functions.php" file, go to around line 614 ~ 624 you'll see these code :</p> <pre><code>foreach ($all_child_array as $i){ //save old data into array, for form redisplay in case errors occured $form_data[$base_element_name.$i][&#39;default_value&#39;] = $user_input[$base_element_name.$i]; //prepare data for table column $table_data[$base_element_name.$i] = $user_input[$base_element_name.$i]; }</code></pre> <p>then replace the code with this </p> <pre><code>$count_value = 0; foreach ($all_child_array as $i){ //save old data into array, for form redisplay in case errors occured $form_data[$base_element_name.$i][&#39;default_value&#39;] = $user_input[$base_element_name.$i]; //prepare data for table column $table_data[$base_element_name.$i] = $user_input[$base_element_name.$i]; if ($user_input[$base_element_name.$i] != &#39;&#39; or !empty($user_input[$base_element_name.$i])) { $count_value++; } } if ($count_value &lt;&gt; 2) { if ($form_id == 5 &#38;&#38; $element_id == 1) $error_elements[$element_id] = &#39;You only need to choose 2 options&#39;; }</code></pre> <p>in there I assume you've the field with element id 1 in form id 5, so you need to change those ID with yours </p> https://www.machform.com/forums/topic/require-2-of-5-multiple-choice-answers#post-7361 Sat, 19 Sep 2009 18:01:16 +0000 kflynn 7361@https://www.machform.com/forums/ <p>Hi,</p> <p>I've searched throught the forums a bit but can't find any info. I have a 5 choices in a multiple choice entry. I need the use to be able to select any two multiple choice answers</p> <p>Is this possible? I know I can use checkboxes but a user can then tick as many as they like.</p> <p>Any help greatly appreciated. </p>