Extending a Charitable Class

(@rdosza)

Hi Eric,

I am trying to extend a Charitable class (both in functions.php and in a plugin) without success. My attempt was:


Class Custom_Charitable_Campaign extends Charitable_Campaign {
	public function get_donation_summary() {
                //custom get_donation_summary function
	}
	public function custom_function() {
                //my custom function
	}
}
$new_Custom_Charitable_Campaign = new Custom_Charitable_Campaign($post);

Could you tell me what I am doing wrong?

Thanks in advance!

This topic was modified 9 years, 5 months ago by rdosza.

Viewing 6 replies - 1 through 6 (of 6 total)

Eric Daams
(@ericdaams)

9 years, 5 months ago

The code looks ok to me. Where isn’t this working as you’d expect?

Cheers,
Eric
Thread Starter rdosza
(@rdosza)

9 years, 5 months ago
When I put it into functions.php, changes do not reflect. When I put it in a custom plugin, I receive a fatal error message: “Fatal error: Class ‘Charitable_Campaign’ not found in /…/wp-content/plugins/charitable-custom/charitable-custom.php on line 15”

For test purpose, I am just changing “donated” for “raised”. Here goes the code:
```
	Class Custom_Charitable_Campaign extends Charitable_Campaign {
		public function get_donation_summary() {
			$currency_helper = charitable_get_currency_helper();

			if ( $this->has_goal() ) {
				$ret = sprintf( _x( '%s RAISED of %s goal', 'amount donated of goal', 'charitable' ),
					'' . $currency_helper->get_monetary_amount( $this->get_donated_amount() ) . '',
					'' . $currency_helper->get_monetary_amount( $this->get( 'goal' ) ) . ''
				);
			} else {
				$ret = sprintf( _x( '%s donated', 'amount donated', 'charitable' ),
					'' . $currency_helper->get_monetary_amount( $this->get_donated_amount() ) . ''
				);
			}

			return apply_filters( 'charitable_donation_summary', $ret, $this );
		}
	}
	$new_Custom_Charitable_Campaign = new Custom_Charitable_Campaign($post);
```
Thread Starter rdosza
(@rdosza)

9 years, 5 months ago

Sorry, in a plugin the fatal error is due the fact that I forgot the “require_once”. Yet, when fixed, changes also do not reflect.

Eric Daams
(@ericdaams)

9 years, 5 months ago

Creating this class on its own won’t change the text; you would need to change the class that is used when displaying the text, and that’s a bit more complicated.

If all you want to do is change the text, I’d recommend using Loco Translate instead: https://en-au.wordpress.org/plugins/loco-translate/

It’s a translation plugin, but gives you an easy way to change the default phrases/words used in Charitable.

Cheers,
Eric

Thread Starter rdosza
(@rdosza)

9 years, 5 months ago

Thanks but changing text was just an example for testing purpose. Even this particular class serves only as example for testing purposes. I just wanted to try to create some extensions but simply do not understand what I am doing wrong and why I am not able extend Charitable_Campaign class.

Eric Daams
(@ericdaams)

9 years, 5 months ago

Sorry, I guess I’m struggling to understand what you are trying to achieve. Why do you want to create a subclass of Charitable_Campaign? What do you want to do with it and where do you want to integrate it?

cheers,
eric

Viewing 6 replies - 1 through 6 (of 6 total)

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