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Kirby 5.1.3

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    $pages->has()

    Checks if the given object or id is in the collection

    $pages->has(string|Kirby\Cms\Page $key): bool

    Parameters

    Name Type Default
    $keyrequired stringorKirby\Cms\Page no default value

    Return type

    bool

    This method modifies the existing $pages object it is applied to and returns it again.

    Parent class

    Kirby\Cms\Pages inherited from Kirby\Cms\Collection 

    <?php if (page('projects')->children()->has('projects/project-a')): ?>
  There exists a subpage with the uid `some-page`
<?php endif ?>