/**
* @param Builder $builder
* @param Collection $tags
* @return Builder
*/
public function scopeTaggedWith(Builder $builder, Collection $tags)
{
/** @var MorphToMany $relation */
$relation = $this->tags();
$key = $this->getTable() . '.' . $this->getKeyName();
if ($tags->count()) {
$builder->join($relation->getTable(), function ($join) use($relation, $key, $tags) {
$join->on($relation->getForeignKey(), '=', $key);
$join->where($relation->getMorphType(), '=', $relation->getMorphClass());
$join->whereIn($relation->getOtherKey(), $tags->keys()->toArray());
});
} else {
$builder->whereNull($this->getTable());
}
return $builder;
}
public static function choose_from_collection(\Illuminate\Database\Eloquent\Collection $collection)
{
assert($collection->count(), 'Collection empty!');
return $collection->get($collection->keys()[mt_rand() % $collection->count()]);
}
