[8.x] Adds the valueOfFail() Eloquent builder method

[DarkGhostHunter]

What?

It's the same value() but it will fail miserably if the model is not found.

// Before:
$votes = User::where('name', 'John')->firstOrFail('votes')->votes;

// Now:
$votes = User::where('name', 'John')->valueOrFail('votes');

This is miles better if model contains properties that can be null.

How?

It just copy-pastes the value() method but instead uses firstOrFail() and removes the condition since the model is expected to exist.

BC?

None, it's additive.

Notes

• I decided to not include valueOr() since you can use ?? or ??=, which are awesome.