php - Accessing Parent relations Laravel -

i have situation need iterate through models relationships (1 many) , call function on children. i.e.

$parent = parentclass::find(1) $children = $parent->children; foreach($children $child) {     $child->function(); } 

the function inside child needs access fields parent model. i.e.

public function function() {     if($this->parent->attribute)         return "true!";     return "false"; } 

executing above, ends n+1 query problem. each child ends executing "select * parents id = 1".

i've had 3 thoughts on how fix this, though 2 of them feel awful, , last 1 doesn't seem great me, i'm asking there better solution have considered?

solution 1: eager load parent onto child models. i.e.

... $children = $parent->children; $children->load('parent'); foreach($children $child) ... 

i think it's pretty obvious why awful, tremendous memory hog have parent model stored in memory n+1 times.

solution 2: pass parent child argument, i.e.

... foreach($children $child) {     $child->function($parent); } ... 

avoids memory issue of 1, still feels ugly. think child should know it's parent, , not need told through method args.

solution 3: add remember() child's parent relationship i.e.

public function parent() {     return $this->hasone('parent')->remember(1); } 

since children have same parent, cache query, , avoid calling every child. seems best of these 3 solutions, don't idea of having becomes mandatory on relationship.

is there better approach not considering? maybe better place include remember function?

thank you, -wally

if have inverse relationship defined like:

$parent = parentclass::find(1); foreach ($parent->children $child) {     $requiredparentattr = $parent->attr;     $child->function($requiredparentattr);     // whatever else }