Did you mean to keep that output no-cacheable? If so, the whole page will be non cacheable in fact. You can call our ESI API without using shortcode.
https://www.litespeedtech.com/support/wiki/doku.php/litespeed_wiki:cache:lscwp:api
LiteSpeed_Cache_API::hook_tpl_not_esi($hook)
Hooki not ESI template.
LiteSpeed_Cache_API::hook_tpl_esi($block, $hook)
Use this hook to display an ESI block.
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This reply was modified 7 years, 4 months ago by
Hai Zheng⚡.
Thanks for your reply and sorry that my question wasn’t clear enough, I will try to clearify what i mean more.
This is an example code that change the Woocommerce price based on the user country using Cloudflare GeoIP HTTP header.
So i was wondering if i can make the outbut of this function (The price) uncachable while the rest of the page to be cashed, Please note that i used on this example add_filter and add_action to make sure of the posability to do so in both cases.
function sv_change_product_price_display( $price ) {
$country_code = $_SERVER["HTTP_CF_IPCOUNTRY"];
if ( $country_code = "DE") {
$price = $price + 4;
} else {
$price = $price + 2;
}
return $price;
}
add_filter( 'woocommerce_get_price_html', 'sv_change_product_price_display' );
add_action( 'woocommerce_before_add_to_cart_button', 'sv_change_product_price_display' );
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This reply was modified 7 years, 4 months ago by
arabtornado.
There may be an easier way to do this.
You can create cache varies based on country. So, there would be a fully cached version of each page for users from DE and a separate fully cached version for everyone else.
Check our API for relevant “vary” functions. I think this is the one you’d need:
LiteSpeed_Cache_API::vary($vary_name, $vary_value, $default_value)
You can learn more about cache varies here.
Thanks again for the quick response 🙂
I read the documentation but still having a hard time to understand it… maybe because im still new to programing and the lack of examples on the documentation.
Anyway here is what i still dont understand hope you can clear it up for me..
——————————
1- To make it very simple lets use this example to output the time into the wp_head hook using ESI
Here is the non-ESI code
add_action( 'wp_head', 'esi_time' );
function esi_time() {
echo date("h:i:sa");
}
So im wondering how to implement the sample code above with the following ESI function? LiteSpeed_Cache_API::hook_tpl_esi($block, $hook)
————————————-
2- I read the documentation and what i understood is that i have to add vary value to the http header in htaccess using code like this
RewriteCond %{HTTP_USER_AGENT} Mobile|Android|Silk/|Kindle|BlackBerry|Opera\ Mini|Opera\ Mobi [NC] RewriteRule .* – [E=Cache-Control:vary=ismobile]
So please correct me if im wong, my guess for how to use LiteSpeed_Cache_API::vary() function is like that..
add_action( 'wp_head', 'esi_device' );
function esi_device() {
LiteSpeed_Cache_API::vary('ismobile', 'This is mobile' , 'This is a PC')
}
Also im wondering what if i needed to create more than 1 variation. for exammple if i have 5 countries and i wanna do a different variation for each country.
Im sorry for the too many questions im just trying to understand the LS functions.
Thanks
This ESI example may help you understand: https://www.litespeedtech.com/support/wiki/doku.php/litespeed_wiki:cache:lscwp:esi_sample
1.
add_action( 'wp_head', 'esi_time' );
function esi_time() {
echo LiteSpeed_Cache_API::esi_url( 'show_your_time', 'xxx Name' ) ;
}
LiteSpeed_Cache_API::hook_tpl_esi('show_your_time', 'show_your_time' ) ;
function show_your_time( $param ) {
echo date("h:i:sa") ;
}
2. If you want to use vary way, for different countries, you can just use one vary, with different values.
So it will be like
LiteSpeed_Cache_API::vary('geo', 'US' , 'US') ;
LiteSpeed_Cache_API::vary('geo', 'CH' , 'US') ;
Thank you, I tried the first “Time” example but as you can see here
https://bonstato.net
the time is cached however the ESI TTL on the plugin settings is set to 0, also please note that i see a different time when i login as administrator or not however all user roles on ESI tab has 0 TTL
That TTL is in the settings. As you called API, you can set TTL by yourself (sample below). BTW, the roles settings under ESI tab is not a TTL config.
LiteSpeed_Cache_API::hook_tpl_esi('show_your_time', 'show_your_time' ) ;
function show_your_time( $param ) {
LiteSpeed_Cache_API::set_ttl( 60 ) ;
echo date("h:i:sa") ;
}
Also, when calling esi_url, would suggest to add a 4th param to control cache to public. Default is private which will cause each individual visitor hit your WP and lose the benefit of cache. Can call like this:
echo LiteSpeed_Cache_API::esi_url( 'show_your_time', 'xxx Name', array(), 'public' ) ;
However, this is just to show how to use ESI url. If the reason is to show different public info based on GEO location, vary is a better way like Lisa mentioned.
Thanks so much for your reply
