I have 2 tables :
- Valuechains : id, created_at, updated_at, deleted_at
- Segments : id, valuechain_id (Foreign key), created_at, updated_at, deleted_at
And pivot tables (not really important here).
I have a method with sql requests ...
- $valuechains list gives me a list of all the value chains which are not (soft) deleted
- $valuechainCount counts the number of valuechains which are published
- $segmentCount counts the number of segments for each value chains
I try to use the map function in order to add a column which contains the number of segments for each value chains ...
public function vcListAndSegmentCount() {
$valuechainLists = Valuechain::select('valuechains.id', 'lang_valuechain.vcname', 'lang_valuechain.vcshortname')
->join('lang_valuechain', 'valuechains.id', '=', 'lang_valuechain.valuechain_id')
->join('langs', 'lang_valuechain.lang_id', '=', 'langs.id')
->where('langs.isMainlanguage', '=', '1')
->whereNull('valuechains.deleted_at')
->get();
$valuechainCount = Valuechain::whereNull('valuechains.deleted_at')->count();
for ($i=0; $i < $valuechainCount; $i++) {
$segmentCount[$i] = Segment::whereNull('segments.deleted_at')
->where('valuechain_id', '=', $valuechainLists[$i]->id)->count();
}
$valuechainLists = $valuechainLists->map(function ($record) use ($segmentCount) {
$vclists = array_first($segmentCount, function ($value, $key) use ($record) {
return $value['id'] === $record['valuechain_id'];
});
$record['count'] = $vclists;
return $record;
});
dd($valuechainLists);
}
The map methods adds a column my output collection. Unfortunatelly, the new collection is not giving me the right numbers of segments for each value chain... it only adds one value ...
Here is what I obtain :
Collection {#380 ▼
#items: array:4 [▼
0 => Valuechain {#450 ▼
...
#attributes: array:4 [▼
"id" => 1
"vcname" => "Génétique"
"vcshortname" => "Génétique"
"count" => 6
]
#original: array:3 [▶]
...
}
1 => Valuechain {#451 ▼
...
#attributes: array:4 [▼
"id" => 2
"vcname" => "Biotruc"
"vcshortname" => "Biotruc"
"count" => 6
]
...
}
2 => Valuechain {#452 ▼
...
#attributes: array:4 [▼
"id" => 3
"vcname" => "VC3"
"vcshortname" => "VC3"
"count" => 6
]
...
}
3 => Valuechain {#453 ▼
...
#attributes: array:4 [▼
"id" => 4
"vcname" => "VC4"
"vcshortname" => "VC4"
"count" => 6
]
#original: array:3 [▶]
...
}
]
}
I obtain 6, 6, 6 and 6 whereas the count should be 6, 5, 4, 4...