Laravel, check if session array has value

Question

How do I check, if a value already exists within a Session array? I'm trying store active tree objects within a Session array to toggle them on and off:

public function postSelected()
{
    $id = Input::get('id');
    if (Session::has('user.selection', $id)) { // check?
        Session::pull('user.selection', $id);
    } else {
        Session::push('user.selection', $id);
    }

    return Response::json(Session::get('user.selection'), 200);
}

Any ideas?

Joseph Silber · Accepted Answer · 2014-12-09 18:25:08Z

4

Assuming what you're trying to do is akin to a toggle (remove if present, add if missing):

$index = array_search($id, $selection = Session::get('user.selection', []));

if ($index !== false)
{
    array_splice($selection, $index, 1);
}
else
{
    $selection[] = $id;
}

Session::set('user.selection', $id);

edited Dec 9, 2014 at 18:25

answered Dec 9, 2014 at 17:22

Joseph Silber

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5 Comments

wiesson Over a year ago

That easy! What are those brackets at the end of the session doing? Did the trick, thanks! I've already tried in_array, but I have't been successful.

Joseph Silber Over a year ago

@wiesson - Those brackets are short array notation (it's equivalent to array(), which creates an empty array). Basically, it ensures that you're dealing with an array.

wiesson Over a year ago

The array_pull will not remove the desired item from my array. Anything special, I have to notice?

wiesson Over a year ago

I've added Log::info($selection) before and after and it is still the same, also my tree won't update. (I'm storing strings, not integers, if this helps)

Joseph Silber Over a year ago

@wiesson - Whoops! array_pull works with keys, not values. I updated my answer.

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