Laravel querybuilder withCount relationship - laravel

Question

I'm encountering a problem with a script.
I'm working with Laravel 6.x (but there is no big difference).
So, I have a model Order, which has relationship with another model Group like this:
Model Order :
public function groups()
{
return $this->hasMany('App\Models\Order\Group', 'order_id')->orderBy('order_group');
}
Model Group :
public function order()
{
return $this->belongsTo('App\Models\Order\Order', 'order_id');
}
I want all the Orders that have a group where the column 'is_recurrent' inside the group is true AND there are at least 2 line 'is_recurrent' true.
Basically this :
$orders = Order::withCount(['groups' => function ($query) {
$query->where('is_recurrent', true);
}])
->having('groups_count', '>', 1)
->get();
i've try lany things, like Order::whereHas('groups', function ....).
In many cases I got :
SQLSTATE[42803]: Grouping error: 7 ERROR: column "ordergroups.order_group" must appear in the GROUP BY clause or be used in an aggregate function
LINE 1: ... "is_recurrent" = $1 group by "order_id" order by "order_gro...
^ (SQL: select "orders"., (select count() from "ordergroups" where "orders"."id" = "ordergroups"."order_id" and "is_recurrent
" = 1 group by "order_id" order by "order_group" asc) as "groups_count" from "orders" having "groups_count" > 1 order by "created_at" desc)
With
$orders = Order::withCount(['groups' => function ($query) {
$query->where('is_recurrent', true)->groupBy('order_group');
}])
->having('groups_count', '>', 1)
->get();
I got :
SQLSTATE[42703]: Undefined column: 7 ERROR: column "groups_count" does not exist
LINE 1: ...roup" asc) as "groups_count" from "orders" having "groups_co...
^ (SQL: select "orders"., (select count() from "ordergroups" where "orders"."id" = "ordergroups"."order_id" and "is_recurrent
" = 1 group by "order_group" order by "order_group" asc) as "groups_count" from "orders" having "groups_count" > 1 order by "created_at" desc)
If someone has any clue :D

Answer 1

The withCount function adds a variable to your model, it isn't available within the query (at least to my knowledge).
Based on the little info of your table structure, this should give the correct result; using whereHas with the same query you will ensure that there is at least 1 group with is_recurrent = true, and using withCount will give you the complete count on the individual order model.
$orders = Order::withCount(['groups' => function ($query) {
$query->where('is_recurrent', true)->groupBy('order_group');
}])
->whereHas(['groups' => function ($query) {
$query->where('is_recurrent', true)->groupBy('order_group');
}])
->get();