New withGlobalErrors macro

[bilfeldt]

There is an existing view method withErrors that is used like this:

view('post-index')
    ->withErrors(['field' => 'Some error'], 'default');

but the problem is that the errors are available as $errors only in the provided view, meaning two things:

1. They override the global $errors used by validation and the method with same name withErrors() on redirects
2. Any parent/child views do not have access to these errors (like for example the main layout)

I wrote a PR for this that was unfortunately rejected - see laravel/framework#39459

So this issue is about creating a macro withGlobalErrors that merges the errors to the global errors:

view('post-index')
    ->withGlobalErrors(['field' => 'Some error'], 'default'); // These messages are merged into the 'default' bag

This is how to merge: https://laravel.com/api/8.x/Illuminate/Support/MessageBag.html#method_merge

[bilfeldt]

PR rejected by Taylor and this is outside the scope of this package.

[bilfeldt]

Proper solution found in #2 where a new function addErrors was added which will add the errors to the global $errors instead of to a named local property with the same name.