Laravel query join child table as array - php

Question

I have this data
$result = DB::table('zone_regions')
->where('zone_regions.id', '=', $request->input('zone'))
->join('areas', function ($join) use($area) {
$join->on('zone_regions.id', '=', 'areas.zone_id')
->where('areas.id', '=', $area);
})
->join('hthree_regions', function ($join) use($city) {
$join->on('areas.id', '=', 'hthree_regions.area_id')
->where('hthree_regions.id', '=', $city);
})
->join('segments', function ($join) use($segment) {
$join->on('hthree_regions.id', '=', 'segments.hthree_id')
->where('segments.id', '=', $segment);
})
->join('links', function ($join) use($link) {
$join->on('segments.id', '=', 'links.segment_id')
->where('links.id', '=', $link);
})
->join('titik_closurs', function ($join) use($closure) {
$join->on('links.id', '=', 'titik_closurs.link_id')
->where('titik_closurs.id', '=', $closure);
})
// ->leftjoin('core_histories', 'titik_closurs.id', '=', 'core_histories.titik_id')
// ->select('titik_closurs.*', 'core_histories.*')
->groupBy('titik_closurs.id')
->get();
I want to add titik_closurs histories (core_histories) as an array into my returned data.
Sample data
Current data
This is what I have currently
data: [{...}]
0: {...}
id: 3
latitude: "6.2088000"
longitude: "106.8456000"
site_name: "98987454-54741115"
user_id: 1
zone_id: 2
And this is what I want to have
data: [{...}]
0: {...}
id: 3
latitude: "6.2088000"
longitude: "106.8456000"
site_name: "98987454-54741115"
user_id: 1
zone_id: 2
histories: [{......}]
histories: [{......}] array added to the results.
Note
This data (current data) are a bit messed up as is include data of all joined tables in my function, what I really need is just data of table titik_closurs and child of it table core_histories the rest aren't really useful for me in this case.
Sample of final data I wish to have:
data: [{...}]
0: {...}
// just data of `titik_closurs` exclude data of `zone_regions, areas, hthree_regions` etc.
id: 3
latitude: "6.2088000"
longitude: "106.8456000"
site_name: "98987454-54741115"
histories: [{....}]
Any idea how to do that?
Update
If I change my query (last part) to something like this:
->join('titik_closurs', function ($join) use($closure) {
$join->on('links.id', '=', 'titik_closurs.link_id')
->where('titik_closurs.id', '=', $closure)
->leftjoin('core_histories', function ($joinn) {
$joinn->on('titik_closurs.id', '=', 'core_histories.titik_id');
});
})
->groupBy('titik_closurs.id')
->get();
It does join core_histories to titik_closurs BUT,
It doesn't show them as child array
It only gets first core_histories not all.

Answer 1

Solved
I was playing with codes and came up with union solution then it led me to array_merge which fixed my issue.
So what I did basically was getting all histories in separate variable and push it into my default array.
//get histories
$histories = DB::table('core_histories')->where('titik_id', $closure)->get();
// default function
$result = DB::table('zone_regions')......
//merge them into one
$res = array_merge($result, ['histories' => $histories]);
Result
data: {
0: {...} // data
histories: [ // histories
0: {...}
1: {...}
]
}
Hope it help others as well.

Answer 2

For this particular situation you seem to have 3 (or 4?) related models. It's far easier (and much more readable) to define them as relationships and then do a nested retrieval with aggregation say:
$zone = Zone::with('region.segment.link.titik')
->where('id', $request->input('zone');
$titik = $zone->region->flatMap(function ($region) { return $region->segment })
->flatMap(function ($segment) { return $segment->link })
->flatMap(function ($link) { return $segment->titik });
What could also work (with yout current approach):
$result = DB::table('zone_regions')
->where('zone_regions.id', '=', $request->input('zone'))
->join('areas', function ($join) use($area) {
$join->on('zone_regions.id', '=', 'areas.zone_id')
->where('areas.id', '=', $area);
})
->join('hthree_regions', function ($join) use($city) {
$join->on('areas.id', '=', 'hthree_regions.area_id')
->where('hthree_regions.id', '=', $city);
})
->join('segments', function ($join) use($segment) {
$join->on('hthree_regions.id', '=', 'segments.hthree_id')
->where('segments.id', '=', $segment);
})
->join('links', function ($join) use($link) {
$join->on('segments.id', '=', 'links.segment_id')
->where('links.id', '=', $link);
})
->join('titik_closurs', function ($join) use($closure) {
$join->on('links.id', '=', 'titik_closurs.link_id')
->where('titik_closurs.id', '=', $closure);
})
// ->leftjoin('core_histories', 'titik_closurs.id', '=', 'core_histories.titik_id')
// ->select('titik_closurs.*', 'core_histories.*')
->get()
->groupBy('titik_closurs.id'); // Note the order change
This will use the collection's groupBy rather than the SQL GROUP BY (which does not provide any groups to the result)

Answer 3

You can do this with nested relationship. If you have model for each table its easier for you. see below code:
ZoneRegion Model:
public function area() {
return $this->belongsTo(Area::class);
}
in Area model:
public function hthree() {
return $this->belongsTo(HthreeRegions::class);
}
and so on...
when you want to use and append array as you want you can do:
ZoneRegion::where('your condition')->with('area.hthree.segments.etc')->get();
Maybe my relationship is wrong because I don't know exactly what your relationship is like, and if you give an example or tell the relationship, maybe I can answer better.
But in the end, this method simply eliminates your need.
Hope it help