Laravel Join Relations for JSON - mysql

Question

I am using Eloquent Relationship in Laravel to output my data to JSON. When I use Eloquent Relations they show up inside JSON as an object but I need only JSON output with variables inside without object or json, As shown below:
{
"id": 1,
"name": "Status changed",
"history_id": null,
"admin_id": 4,
"created_at": "2021-05-21T16:10:08.000000Z",
"updated_at": "2021-04-21T16:10:08.000000Z",
"type_id": 2,
"comment": "Horoshiy Specialist",
"result_id": 2,
"result_comment": "Prowerili anketu i obrazowanie",
"start_time": null,
"end_time": null,
},
Instead of this (the result for the relation one to many toJSON in LARVEL) :
$activity = Activity::find(1)->load('history')->toJSON();
result:
{
"id": 1,
"name": "Status changed",
"history_id": null,
"admin_id": 4,
"created_at": "2021-05-21T16:10:08.000000Z",
"updated_at": "2021-04-21T16:10:08.000000Z",
"history": [
{
"id": 1,
"type_id": 2,
"comment": "Horoshiy Specialist",
"result_id": 2,
"result_comment": "Prowerili anketu i obrazowanie",
"start_time": null,
"end_time": null,
}
]
},
Any ideas how this can be done ? I can do it using DB join (), but is there a way to do it using Eloquent? Besides :
$activity = \App\Models\Activity::find(1)
->join('activity_history', 'activity_history.id', '=',
'activities.history_id')->select('*')->get()
->toJSON();
Because this is not the best way to do it, because I am using the column names and the table names, which I have to go to the DB behind to look at them

Answer 1

You can around doing this by flattening the array when you get that result. Let's imagine you $object->history to get the result with the history relationship, and simply do:
Arr::dot($object->history);
So you'll get an array like:
{
"id": 1,
"name": "Status changed",
"history_id": null,
"admin_id": 4,
"created_at": "2021-05-21T16:10:08.000000Z",
"updated_at": "2021-04-21T16:10:08.000000Z",
"history.id": 1,
"history.type_id": 2,
"history.comment": "Horoshiy Specialist",
"history.result_id": 2,
"history.result_comment": "Prowerili anketu i obrazowanie",
"history.start_time": null,
"history.end_time": null,
}