Laravel: global variable based on session accessible via ENTIRE application (including tests and policies)

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My application allows users to be apart of different accounts. On each account, they may have varying roles. I essentially want to do what Mailchimp does.

A user can be the "owner" of one account, while only an author on another.

But if I'm logged as a user who's an owner on one account, and then I want to "switch accounts", how can I handle this change in the application?

Currently I'm grabbing the user's first account model

auth()->user()->accounts()->first

If I want to allow them to switch to another account, how can I globally handle this and remember their choice across the application and every route.

I understand how to grab a specific model like Account::find($id), but this needs to be global and then in every controller I need to reference currentAccount somehow.

Edit:

So I have a good idea on how to actually manage the account ID via sessions. I put together some very simple logic on setting the current account based on session data. I just put this on a controller route and returned the data for testing:

public function getCurrentAccount(Request $request) {

        $request->session()->put('account_id', 3);

        $account_id = $request->session()->get('account_id');
        $user = auth()->user();

        if ($account_id) {
            $account = Account::findOrFail($account_id);

            if ($user->accounts->contains($account->id)) {
                $this->account = $account;
            } else {
                dd('error');
            }
        } else {
            $this->account = auth()->user()->accounts()->first();
        }
        return $this->account;
    }

So the above is the basic logic I need to apply. simple enough. However, I don't really know WHERE to put the initial session value.

And then I need to make a variable based on the session data accessible to all controllers, views, policies / authorization, tests, etc.

laravel
1 Answers

Generally, information you want to persist during a user's visit is kept in a session variable. You probably will need a step after they log in that allows them to select what account they will be working with unless you want to default them to a favorite or something. The session variable holding the account's ID, for example, will be available everywhere with Laravel's global session function.

You will likely provide a form that submits to a route to change the active account. In that route's method, you can do:

// assign session key to a value
session(['account_id' => $request->input('account_id')]);

then, to access it when in other routes you can do:

// get session key's value
session('account_id')

Refer to this documentation if you need more details: https://laravel.com/docs/7.x/session#using-the-session

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