Laravel TokenMismatchException VerifyCsrfToken.php

While learning Laravel I came across the error:

laravel TokenMismatchException in VerifyCsrfToken.php line 67

This seems to be a breaking change between when the latest laracast tutorials were recorded and the version I am using.

This was due to a hidden field not being on a form which is required when using POST.

The fix was to add:

{!! csrf_field() !!}

For example:

<form method="POST" action="/cards/{{$card->id}}/notes">
<div class="form-group">
<textarea name="body" class="form-control"></textarea>
</div>

<div class="form-group">
<button type="submit" class="btn btn-primary">Add Note</button>
</div>

{!! csrf_field() !!}

</form>