BadMethodCallException with message ‘Call to undefined method IlluminateDatabaseQueryBuilder::toArray()’

I am working along with @Jeffrey_way series of Laracasts Many to Many Relations (With Tags)

Below is the code I have written in CMD using Laravel Tinker:

After executing the last line of code ($article->tags()->toArray();

Although everything seems to be OK with my code but still I get following error:

BadMethodCallException with message 'Call to undefined method IlluminateDatabaseQueryBuilder::toArray()'

Answer

If you want to actually “get” relational data, you don’t put parenthesis arount tags. This will work just fine:

$article->tags->toArray();

You put parenthesis when you need to “query” to that collection (Ex. sync, save, attach).

Reference: https://laravel.com/docs/5.1/eloquent-relationships#many-to-many