Couple of suggestions first – you may already have in place
Run a testing server on your own computer.
Package up and download your website with Duplicator
https://www.ads-software.com/plugins/duplicator/
Set up a localhost sever – I use XAMPP
https://www.apachefriends.org/index.html
Use a Child Theme for your website so any alterations you make to style sheets and functions.php don’t get overwritten with theme updates. Many theme come with this already set up but a plugin that makes it easy is Child Theme Wizard
https://www.ads-software.com/plugins/child-theme-wizard/
Make sure you have a back up system in place – One I use is BackUpWordPress
https://www.ads-software.com/plugins/backupwordpress/
Set frequency of backups and how many copies to keep at one time. Stores to server. The pro version of Duplicator https://snapcreek.com/ allows scheduled backups and cloud storage. There are many like this.
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Now to how I solved my issue with the gallery images and thumbnails after the update. This got me sorted – I am not going to guarantee it will fix yours.
Hopefully you have set up a child theme – go to Appearance / Editor (locate child theme) / Theme Functions (functions.php) and add the following
add_action( 'after_setup_theme', 'yourtheme_setup' );
function yourtheme_setup() {
/*add_theme_support( 'wc-product-gallery-zoom' ); */
add_theme_support( 'wc-product-gallery-lightbox' );
add_theme_support( 'wc-product-gallery-slider' );
}
the /* */ just means I commented out the zoom as it did not work correctly for me. Try it – if it does not work delete or comment out. Do leave the Slider in there though.
CSS for my child theme custom styles
I tried their suggestion but my thumbnails, although correctly sized, remained in a column and there were a couple of other features missing as well – so I harvested css from my other Storefront theme that updated just fine.
.single-product div.product .woocommerce-product-gallery .flex-control-thumbs li img.flex-active, .single-product div.product .woocommerce-product-gallery .flex-control-thumbs li:hover img {
opacity: 1;
}
woocommerce.css?ver=4.7.3:1 .single-product div.product .woocommerce-product-gallery .flex-control-thumbs li img {
opacity: .5;
-webkit-transition: all, ease, .2s;
-moz-transition: all, ease, .2s;
transition: all, ease, .2s;
}
.single-product div.product .woocommerce-product-gallery .flex-control-thumbs li {
list-style: none;
margin-bottom: 1.618em;
cursor: pointer;
}
.single-product .pswp__button {
background-color: transparent
}
.single-product div.product {
position: relative;
overflow: hidden
}
.single-product div.product:after, .single-product div.product:before {
content: "";
display: table
}
.single-product div.product .images, .single-product div.product .summary, .single-product div.product .woocommerce-product-gallery {
margin-bottom: 2.617924em;
margin-top: 0
}
.single-product div.product .woocommerce-product-gallery {
position: relative
}
.single-product div.product .woocommerce-product-gallery .woocommerce-product-gallery__trigger {
position: absolute;
top: .875em;
right: .875em;
display: block;
height: 2em;
width: 2em;
border-radius: 3px;
z-index: 99;
text-align: center;
text-indent: -999px;
overflow: hidden;
text-decoration: none;
}
.single-product div.product .woocommerce-product-gallery .woocommerce-product-gallery__trigger:before {
font: normal normal normal 1em/1 FontAwesome;
font-size: inherit;
text-rendering: auto;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
display: block;
content: "\f00e";
line-height: 2;
text-indent: 0;
}
.single-product div.product .woocommerce-product-gallery .woocommerce-product-gallery__trigger img {
display: none!important
}
.single-product div.product .woocommerce-product-gallery img {
margin: 0
}
.single-product div.product .woocommerce-product-gallery .flex-viewport {
margin-bottom: 1.618em
}
.single-product div.product .woocommerce-product-gallery .flex-control-thumbs {
margin: 0;
padding: 0
}
.single-product div.product .woocommerce-product-gallery .flex-control-thumbs:after, .single-product div.product .woocommerce-product-gallery .flex-control-thumbs:before {
content: "";
display: table
}
.single-product div.product .woocommerce-product-gallery .flex-control-thumbs li {
list-style: none;
margin-bottom: 1.618em;
cursor: pointer
}
.single-product div.product .woocommerce-product-gallery .flex-control-thumbs li img {
opacity: .5;
-webkit-transition: all, ease, .2s;
-moz-transition: all, ease, .2s;
transition: all, ease, .2s
}
.single-product div.product .woocommerce-product-gallery .flex-control-thumbs li img.flex-active, .single-product div.product .woocommerce-product-gallery .flex-control-thumbs li:hover img {
opacity: 1
}
.single-product div.product .woocommerce-product-gallery.woocommerce-product-gallery--columns-2 .flex-control-thumbs li {
width: 42.8571428571%;
float: left;
margin-right: 14.2857142857%;
}
.single-product div.product .woocommerce-product-gallery.woocommerce-product-gallery--columns-2 .flex-control-thumbs li:nth-child(2n) {
margin-right: 0
}
.single-product div.product .woocommerce-product-gallery.woocommerce-product-gallery--columns-3 .flex-control-thumbs li {
width: 23.8095238%;
float: left;
margin-right: 14.2857142857%;
}
.single-product div.product .woocommerce-product-gallery.woocommerce-product-gallery--columns-3 .flex-control-thumbs li:nth-child(3n) {
margin-right: 0
}
.single-product div.product .woocommerce-product-gallery.woocommerce-product-gallery--columns-4 .flex-control-thumbs li {
/*width: 14.2857142857%; */
width: 18%;
float: left;
/*margin-right: 14.2857142857% */
margin-right: 8.2857142857%;
}
.single-product div.product .woocommerce-product-gallery.woocommerce-product-gallery--columns-4 .flex-control-thumbs li:nth-child(4n) {
margin-right: 0
}
.single-product div.product .images .woocommerce-main-image {
margin-bottom: 1.618em;
display: block
}
.single-product div.product .images .thumbnails a.zoom {
display: block;
width: 22.05%;
margin-right: 3.8%;
float: left;
margin-bottom: 1em
}
.single-product div.product .images .thumbnails a.zoom.last {
margin-right: 0
}
I made a change to
.single-product div.product .woocommerce-product-gallery.woocommerce-product-gallery–columns-4 .flex-control-thumbs li
as I wanted the thumbnails bigger – but you can see the original setting is still there just commented out.
maybe there are still a couple of other minor changes in there to suit my styling – it was late at night…
I also had to rectify them changing a h3 to a h2 which stuffed up my product display lists.
All in all I consider myself lucky – annoyed as all hell but lucky compared to some. I had clicked update as soon as it came out without checking the front end – so there was a period of time where my client’s shop didn’t get any sales.
