Automatically determine breadcrumbs from current route

[d13r]

I don't yet know if this is possible but I'd like to try to determine the current breadcrumbs from the current route name & parameters, so that it's not necessary to specify these again in the view.

This may not be possible since not all routes are named...

[imevul]

I use this code, which works but probably isn't the best solution.

function has_breadcrumb($name = NULL) {
    if ($name === NULL) {
        $name = Route::currentRouteName();
    }

    $excluded = ['home']; //TODO Move to config.
    if (in_array($name, $excluded)) {
        return FALSE;
    }

    return in_array($name, Breadcrumbs::getRegistered());
}

/**
 * Render the breadcrumb for a certain route. (If it has one.)
 * @param string $name The route to display breadcrumbs for.
 * @param array $routeParameters Any route parameters to use. For example, the selected category.
 * @return string|NULL Returns the breadcrumb HTML if successful, otherwise NULL.
 */
function render_breadcrumb($name = NULL, $routeParameters = array()) {
    if ($name === NULL) {
        $name = Route::currentRouteName();
    }

    if (has_breadcrumb($name)) {
        return Breadcrumbs::render($name, $routeParameters);
    }
}

As you can see, it requires a small modification to the Breadcrumbs library; a way to get the currently added breadcrumbs. ($this->callbacks)

This only works for named routes though, and you have to send func_get_args() as $routeParameters to the view, which can be a bit of a hassle. The best thing would be if you could just call Breadcrumbs::render() without any parameters and it would get the current route stuff automatically.

Edit: This doesn't actually work since the 2.x update.

[d13r]

Since 2.0 you probably need Breadcrumbs::renderArray($name, $routeParameters) instead.

An alternative to has_breadcrumb() would be to put a try/catch around the call to render(), but I'll keep that in mind and perhaps add Breadcrumbs::exists() or similar too.

[Andreyco]

I think this is resolved here #24

[d13r]

Released in 2.2.0.