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Send Footer to Bottom of Viewport on Short Posts

/* If a page's height is shorter than the viewport, this ensures the footer does not creep beyond the bottom of the viewport */
body {
   position: relative;
   min-height: 100vh;
}
.site-footer {
   position: absolute;
   width: 100%;
   bottom: 0;
}

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Redirect After Login

@replace {{link}}

// Redirect a user after successful login
add_filter( 'login_redirect', function () {
  return '{{link}}';
} );

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Prevent Submission When Pressing Enter

<?php // Disables form submission when pressing Enter, unless user has tabbed to a form button.
add_action( 'gform_pre_render', function ( $form ) { ?>

   <script type="text/javascript">
      jQuery(document).bind('gform_post_render', function() {
         jQuery(document).on( 'keypress', '.gform_wrapper', function (e) {
            var code = e.keyCode || e.which;
            if ( code == 13 && ! jQuery( e.target ).is( 'textarea,input[type="submit"],input[type="button"]' ) ) {
               e.preventDefault();
               return false;
            }
         });
      });
   </script>

   <?php return $form;

} );

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Route Notifications Via Username & Email

Format your email field(s) in notifications as {usernames:user1:user2}{emails:account@example.com} or {usernames:user1:user2:user3} or as usual.

// Allow Gravity Form notification email fields to use usernames and email
// Format your email fields in notifications as {usernames:user1:user2:user3} or {usernames:user1:user2}{emails:account@example.com}
add_filter( 'gform_notification', function ( $notification, $form, $entry ) {

   // reusable function for translating routes
   function typewheel_gform_notification_translate_routes( $routes ) {

      if ( strpos( $routes, '{usernames' ) !== false || strpos( $routes, '{emails' ) !== false ) {

         // parse the username and email batches
         $routes = str_replace( array( '} {', '},{' ), '}{', $routes );
         $batches = explode( '}{', substr( $routes, 1, -1 ) );

         foreach ( $batches as $key => $batch ) {

            if ( strpos( $batch, 'usernames' ) !== false )
               $usernames = explode( ':', $batch );

            if ( strpos( $batch, 'emails' ) !== false )
               $emails = explode( ':', $batch );

         }

         $to = array(); // initialize the to array

         // loop through users and grab the email
         if ( isset( $usernames ) ) {
            unset( $usernames[0] );
            foreach ( $usernames as $username ) {
               $user = get_user_by( 'login', $username );
               if ( $user !== false ) $to[] = $user->user_email;
            }
         }

         // loop through the email addresses
         if ( isset( $emails ) ) {
            unset( $emails[0] );
            foreach ( $emails as $email ) $to[] = $email;
         }

         // add all addresses to the notification
         $routes = implode( ',', $to );

      }

      return $routes;

   } // end typewheel_gform_notification_translate_routes()

   // run all email fields in the notification through route translation
   if ( $notification['toType'] == 'email' ) {

      $notification['to'] = typewheel_gform_notification_translate_routes( $notification['to'] );

   } else if ( $notification['toType'] == 'routing' ) {

      foreach ( $notification['routing'] as $key => $route )
         $notification['routing'][ $key ]['email'] = typewheel_gform_notification_translate_routes( $notification['routing'][ $key ]['email'] );

   }

   $notification['from'] = typewheel_gform_notification_translate_routes( $notification['from'] );
   $notification['replyTo'] = typewheel_gform_notification_translate_routes( $notification['replyTo'] );
   $notification['bcc'] = typewheel_gform_notification_translate_routes( $notification['bcc'] );

   return $notification;

}, 10, 3 );

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Dynamically Populate ACF Select Field With Existing Gravity Forms

Add gravityforms as field’s Wrapper Attributes class.

// Dynamically populate the options of an ACF select field with Gravity Forms existing on the site
if ( class_exists( 'GFForms' ) ) {

   add_filter( 'acf/load_field/type=select', function( $field ) {

      if ( 'gravityforms' == $field['wrapper']['class'] ) {

         $gf['forms']['active'] = GFAPI::get_forms();
         $gf['forms']['inactive'] = GFAPI::get_forms( false );
         $gf['forms']['all'] = array_merge( $gf['forms']['active'], $gf['forms']['inactive'] );

         foreach ( $gf['forms']['all'] as $form ) {

            $field['choices'][ $form['id'] ] = $form['title'];

         }

      }

      return $field;

   } );

}

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Add CPT(s) to Main Blog Feed

@replace {{cpt-slug}}

add_action( 'pre_get_posts', function ( $query ) {

   if ( is_home() && $query->is_main_query() )
      $query->set( 'post_type', array( 'post', '{{cpt-slug}}' ) );

   return $query;

} );

Source

Capture Post Content in a Gravity Form Field

Optionally @replace .entry-content, <!-- START CONTRACT -->, <!-- END CONTRACT -->

// Send all HTML content between contentStart and contentEnd comments into Gravity Form paragraph text field with class of `content_receiver`
<script>
   jQuery(document).ready(function(){
      const contentStart = '<!-- START CONTRACT -->';
      const contentEnd = '<!-- END CONTRACT -->';
      const contentFull = jQuery('.entry-content').html();
      const contentSent = contentFull.substr(0,contentFull.indexOf(contentEnd)).substr(contentFull.indexOf(contentStart)).replace(contentStart,'');
      jQuery('.content_receiver textarea').val(contentSent.replace(/\n/gm,' '));
   });
</script>

Source

Customize Recovery Mode Email Recipient

@replace {{email}}

// Customize the email address to which recovery mode email is sent when site encounters a fatal error
add_filter( 'recovery_mode_email', function( $email ) {

    $email['to'] = '{{email}}';

    return $email;

} );

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Customizing Your 404 Page Not Found

@replace {{title}}, {{text}}

// Set a custom title for the 404 page
add_filter( 'generate_404_title', function ( $title ) {
   return '{{title}}';
} );

// Set custom text for the 404 page
add_filter( 'generate_404_text', function ( $text ) {
   return '{{text}}';
} );

// Hide the search form from content area on the 404 page
add_filter( 'get_search_form', function ( $form ) {

   if ( is_404() && did_action( 'generate_after_entry_header' ) && ! did_action( 'generate_after_content' ) )
      return '';

   return $form;

} );

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Show Field(s) Across Multiple Pages of Gravity Form

@replace {{_formID}}

<?php // Prepends or appends fields (marked by class `prepend-to-pages` or `append-to-pages` respectively) to every page of a Gravity Form
add_action( 'gform_pre_render{{_formID}}', function( $form ) {

   add_action( 'wp_footer', function () { ?>

      <script type="text/javascript">
         jQuery(document).bind('gform_post_render', function(event, form_id, current_page) {

            jQuery(jQuery('.gfield.prepend-to-pages').get().reverse()).each(function() {
               jQuery(this).prependTo(`#gform_page_${form_id}_${current_page} .gform_fields`);
            });

            jQuery(jQuery('.gfield.append-to-pages').get().reverse()).each(function() {
               jQuery(this).appendTo(`#gform_page_${form_id}_${current_page} .gform_fields`);
            });

         } );
      </script>

   <?php } );

   return $form;

} );

Source

Set Default Customizer Color Palette

@replace @arr

// Set 8 colors that will be used to fill the color picker palette in the Customizer
add_filter( 'generate_default_color_palettes', function ( $palettes ) {
   return array(
      '#040404',
      '#5b5549',
      '#9b5c4d',
      '#d3ac58',
      '#296a7f',
      '#272727',
      '#adada8',
      '#f5f5f5',
   );
} );

Source

Auto-Link Caption to Same URL As the Image’s Link

Add link-the-caption as Additional CSS Class on image block. Caption should contain no other links.

// Auto-link image caption to the same URL as that to which the image has been linked
jQuery(document).ready(function( $ ) {

   $('.link-the-caption').each( function() {

      let image_link = $(this).attr('href');
      let image_caption = $(this).next().html();

      $(this).next().html('<a href="'+image_link+'">'+image_caption+'</a>');

   });

});

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Custom Merge Tags

<?php // Introduce additional merge tags for use throughout Gravity Forms
add_filter( 'gform_replace_merge_tags', function ( $text, $form, $entry, $url_encode, $esc_html, $nl2br, $format ) {

   $custom_merge_tags = array(
      '{date_ymd}'  => date( 'Y.m-M.d', strtotime( $entry['date_created'] ) ),
      '{timestamp}' => time(),
      '{site_url}'  => get_site_url(),
      '{site_name}' => get_bloginfo( 'name' )
   );
    
   return str_replace( array_keys( $custom_merge_tags ), array_values( $custom_merge_tags ), $text);

}, 10, 7 );

// Add our custom merge tags to the dropdown
add_action( 'gform_admin_pre_render', function ( $form ) { ?>

   <script type="text/javascript">
      gform.addFilter('gform_merge_tags', function (mergeTags, elementId, hideAllFields, excludeFieldTypes, isPrepop, option) {
         mergeTags["custom"].tags.push({ tag: '{date_ymd}', label: 'Entry Date (Y.m-M.d)' });
         mergeTags["custom"].tags.push({ tag: '{timestamp}', label: 'Current Time (UNIX Timestamp)' });
         mergeTags["custom"].tags.push({ tag: '{site_url}', label: 'Site URL' });
         mergeTags["custom"].tags.push({ tag: '{site_name}', label: 'Site Name' });
         return mergeTags;
      } );
   </script>

   <?php return $form;

} );

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