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A Second Child

3:18 with Alena Holligan

In this video, we will create a second child while we look at more ways to override methods.

Siblings

We cannot call a private property of a parent directly. We have to make sure we call the parent getter when overriding a method in a child or we may hit an infinite loop.

public function getTitle()
{
    return '<strike>' . parent::getTitle() . '</strike>';
}
  • 0:00

    We have our second child, ListingInactive.

  • 0:03

    For this class we're going to rewrite the get method so

  • 0:07

    that the only data we return is the title and status.

  • 0:11

    We also want to update the status like we did for ListingPremium, so

  • 0:15

    let's start there.

  • 0:21

    Protected $status = 'inactive',

  • 0:26

    now we're ready to override our getters,

  • 0:32

    public function getWebsite(), and

  • 0:38

    we're just going to return nothing.

  • 0:46

    We'll do the same thing for email and Twitter.

  • 1:01

    For the title,

  • 1:02

    instead of just returning the title, let's return the title with a strikethrough.

  • 1:26

    We can't access the title directly, and since we're rewriting getTitle,

  • 1:32

    if we try to call this getTitle we'll hit an infinite loop.

  • 1:37

    We could change the visibility of the property, but

  • 1:39

    that's not really what we want to do.

  • 1:41

    Instead, we'll call the parent method just like we did

  • 1:44

    when we extended the set values.

  • 1:50

    GetTitle, now we need our collection to use

  • 1:55

    this new class, open classes, Collection.

  • 2:01

    We've already been using the inactive status just not given it its own class, so

  • 2:06

    we don't need to update the statuses.

  • 2:08

    The ad listing method determines which listing class we use.

  • 2:17

    Let's add another conditional.

  • 2:27

    If the status is inactive,

  • 2:33

    then we use the inactive class.

  • 2:40

    Let's preview this in the browser.

  • 2:43

    If we choose Inactive we now see that our title is crossed out and

  • 2:49

    we don't have any other details, but let's update the display.

  • 2:59

    Case inactive.

  • 3:15

    Great.

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