I have the following code in my plugin:
register_activation_hook( __FILE__, 'sp_subscriber_check_activation_hook' );
function sp_subscriber_check_activation_hook() {
add_action( 'admin_notices', 'sp_subscriber_check_activation_notice' );
}
function sp_subscriber_check_activation_notice(){
?>
<div class="updated notice is-dismissible">
<p>If you are using a caching plugin like W3TC or WP Super Cache make sure to make any pages you wish to protect an exception to the caching!.</p>
</div>
<?php
}
However when I activate the plugin I don’t get any notice. I’ve tried using update_option
and get_option
but I had no luck with that either.
What’s the correct and best way to achieve this?
UPDATE
I tried the transient thing like this:
register_activation_hook( __FILE__, 'sp_subscriber_check_activation_hook' );
function sp_subscriber_check_activation_hook() {
set_transient( 'mp-admin-notice-activation', true, 5 );
}
add_action( 'admin_notices', 'sp_subscriber_check_activation_notice' );
function sp_subscriber_check_activation_notice(){
if( get_transient( 'fmp-admin-notice-activation' ) ){
?>
<div class="updated notice is-dismissible">
<p>If you are using a caching plugin like W3TC or WP Super Cache make sure to make any pages you wish to protect an exception to the caching!</p>
</div>
<?php
delete_transient( 'mp-admin-notice-activation' );
}
}
But it still didn’t work.
UPDATE 2
I had a typo in the transient part. It worked and I’ll post it as an answer.