How to Merge Two Eloquent Collections?

Question

I have a questions table and a tags table. I want to fetch all questions from tags of a given question. So, for example, I may have the tags \"Travel,\" \"Trains\" and \"Cul

Answer 1

The merge method returns the merged collection, it doesn't mutate the original collection, thus you need to do the following

$original = new Collection(['foo']);

$latest = new Collection(['bar']);

$merged = $original->merge($latest); // Contains foo and bar.

Applying the example to your code

$related = new Collection();

foreach ($question->tags as $tag)
{
    $related = $related->merge($tag->questions);
}