Nested Mutation with Pivot model #2618

input UpsertContact {
 id: ID
 name: String
 email: String
 phoneType: PhoneType
 phone: String
 isPhoneWpp: Boolean
 notes: String
}
input ContactBelongsTo {
 upsert: UpsertContact
 delete: ID
}
type SupplierAdditionalInfo {
 contact: Contact
 notes: String
}
input UpsertSupplierAdditionalInfo {
 id: ID
 notes: String
 contact: ContactBelongsTo
}
input CustomerManageSupplierBelongsToMany {
 connect: [UpsertSupplierAdditionalInfo]
 disconnect: [ID]
}
input CustomerManageSupplier {
 id: ID
 suppliers: CustomerManageSupplierBelongsToMany
}
type Mutation @guard @isEmailVerified @isUserActive {
 customerManageSupplier(input: CustomerManageSupplier! @spread): Company!
 @upsert
}

class Company extends Model {
 public function suppliers(): BelongsToMany {
 return $this
 ->belongsToMany(Company::class, 'customer_supplier', 'customer_id', 'supplier_id')
 ->using(CustomerSupplier::class)
 ->withPivot(['contact_id', 'notes']);
 }
}
class CustomerSupplier extends Pivot {
 protected $fillable = [
 'customer_id',
 'supplier_id',
 'contact_id',
 'notes',
 ];
 public function contact(): BelongsTo {
 return $this->belongsTo(Contact::class);
 }
}

 customerManageSupplier(input: {
 id: $customerId
 suppliers: {
 connect: [{
 id: $supplierId
 notes: "holly crap"
 contact: {
 upsert: {
 name: "papum"
 email: "pa@pum.bola"
 }
 }
 }]
 }
 }) {
 id
 name
 suppliers {
 id
 name
 additionalInfo {
 notes
 contact {
 name
 email
 }
 }
 }
 }