I have a class called DB_Bookings, within that class I have a function called updated_variables() within this is a simple script to look at the date of a published post and change the name of a variable accordingly.
Doing this, throughout my app I intend to use the variable and it will change dynamically per post depending on the date created.
I am struggling to call the variables from within another class. Please see my working below:
class DB_Bookings {
...
public function updated_variables() {
global $post;
$compare_date = strtotime( "2018-05-22" );
$post_date = strtotime( $post->post_date );
if($compare_date > $post_date) {
$weddingNameVariable = 'db-bookingsweddingname';
...
} else {
$weddingNameVariable = 'weddingName';
}
}
} // end DB_Bookings class
Then in my other class (in a file called class-db-bookings-admin.php)
class DB_Bookings_Admin {
...
public function save_metabox( $post_id, $post ) {
...
update_post_meta( $post_id, DB_Bookings::updated_variables($weddingNameVariable), $db_bookingsnew_weddingname );
...
}
} // end Class DB_Bookings_Admin
The idea here is that I can echo out the variable set in my DB_Bookings class and it can change based on the post date (this is essentially compensating for legacy variables as I overhaul the coding of the app).
However, it doesn't appear to be saving and I'm getting the following error
[22-May-2018 19:29:43 UTC] PHP Notice: Undefined variable: weddingNameVariable in /var/www/html/wp-content/plugins/db-bookings/admin/class-db-bookings-admin.php on line 853
Another approach based on comments.
class WeddingVariables {
//add all of the variables needed to this class
//you could create getters/setters to manage this data
$variableA = "data";
//get the variable
public function get_variable_a() {
return $this->variableA;
}
//set the variable
public function set_variable_a( $value ) {
$this->variableA = $value;
}
}
//a global variable
$WeddingVariables = new WeddingVariables();
//admin class
class DB_Bookings_Admin {
public function save_metabox( $post_id, $post ) {
global $WeddingVariables; //now we can access this within this method
//get the value of a variable from the class
$someVariable = $WeddingVariables->get_some_variable();
}
}