https://legacy.forums.gravityhelp.com/topic/prevent-mailchimp-add-on-from-overwriting-subscribed-users-data-with-blanks Gravity Support Forums Topic: Prevent MailChimp Add-on from overwriting subscribed users' data with blanks en-US Sun, 05 Apr 2026 10:08:16 +0000 http://bbpress.org/?v=1.0.1 q https://legacy.forums.gravityhelp.com/search.php https://legacy.forums.gravityhelp.com/topic/prevent-mailchimp-add-on-from-overwriting-subscribed-users-data-with-blanks#post-202915 Tue, 09 Apr 2013 18:11:48 +0000 Dana Cobb 202915@https://legacy.forums.gravityhelp.com/ <p>Hi, Phil,</p> <p>I have added this issue to our feature/bug tracking tool. I need to discuss this further with the team to see if a filter is adequate or if we need to rethink some logic. </p> https://legacy.forums.gravityhelp.com/topic/prevent-mailchimp-add-on-from-overwriting-subscribed-users-data-with-blanks#post-200116 Sun, 07 Apr 2013 14:18:43 +0000 Chris Hajer 200116@https://legacy.forums.gravityhelp.com/ <p>I'll bring this to the attention of the development team. </p> https://legacy.forums.gravityhelp.com/topic/prevent-mailchimp-add-on-from-overwriting-subscribed-users-data-with-blanks#post-198761 Sat, 06 Apr 2013 10:48:37 +0000 Phil 198761@https://legacy.forums.gravityhelp.com/ <p><u>Feature Request for MailChimp Add-on</u><br /> Allow devs to prevent blank fields from overwriting existing data for list members who are already subscribed. </p> <p><u>Example Scenario to Prevent</u></p> <ol> <li>User subscribes to mailing list, adding name to MC list.</li> <li>User forgets and subscribes again (via GF MC add-on), but leaves name field blank.</li> <li>MC add-on updates/overwrites list member's name with blank values.</li> </ol> <p><u>Potential Code Adjustment</u><br /> A new filter, perhaps 'gform_mailchimp_allow_blank_overwrite', could give GF users control over whether fields left blank will overwrite existing data for subscribed users.</p> <p>For example, consider replacing these two lines of GFMailChimp::export_feed() ...<br /> <pre><code>self::log_debug(&quot;Calling - listUpdateMember ... $retval = $api-&gt;listUpdateMember($feed ...</code></pre> <p>... with these lines ...<br /> <pre><code>$allow_blank_overwrite = apply_filters( &#39;gform_mailchimp_allow_blank_overwrite&#39;, ... // defaults to false (some may argue for true) // maybe remove blank fields from $merge_vars if ( ! $allow_blank_overwrite ) $merge_vars = array_filter($merge_vars); if ( ! empty($merge_vars) ) { self::log_debug(&quot;Calling - listUpdateMember ... $retval = $api-&gt;listUpdateMember($feed ... } else self::log_debug(&quot;listUpdateMember not called because $merge_vars was empty ...</code></pre> <p>In limited tests, this worked for me, without breaking anything that I noticed. Time will tell.</p> <p>Thanks for the great work. </p>