Laravel access to relation in WHEN [duplicate] - mysql

Question

This question already has answers here:
Laravel - Eloquent "Has", "With", "WhereHas" - What do they mean?
(2 answers)
Closed 3 months ago.
Hello guys i need to implement filtering result for Document model. My document model have relation with Customer and i need to filter that results with searching multiple columns in customer relation (name and address). I try with traditional way $document->customerRelation->name, customer.name and isn't working.
So i have HTML table with prited documents and there is also printed customer name and customer address. When i type in text box some keywords like (jon or test) i need to filter that columns.
Document
Customer
Address
Document Type
00213
Jon
Test
Inovice
00214
Thomas
Test
Proforma
00215
Agly
Test
Guaranty
00216
Adams
Test
User manual
Here is code
public function index(Request $request)
{
$documents =
Document::when(
$request->has('document_tip_id'), function ($q) use ($request) {
return $q->where('document_tip_id', $request->query('document_tip_id'));
}) // this working
// Here i need to filter by relation (customer.name or address and other columns)
->when(
$request->has('keywords'), function ($q) use ($request) {
return $q->where('customer.name', '%'.$request->query('customer') . '%');
})
->with('products')
->with('customer')
->orderBy('created_at');
$documents = $documents->paginate(20)->withQueryString();
dd($documents);
return ....
}
Dump
Illuminate\Pagination\LengthAwarePaginator {#408 ▼ // app/Http/Controllers/Order/BuyerController.php:38
#items: Illuminate\Database\Eloquent\Collection {#346 ▼
#items: array:20 [▼
0 => App\Models\Document {#321 ▼
#connection: "mysql"
#table: "dokument"
#primaryKey: "id"
#keyType: "int"
#observables: []
#relations: array:2 [▼
"product" => Illuminate\Database\Eloquent\Collection {#343 ▶}
"customer" => App\Models\Customer {#432 ▼
#connection: "mysql"
#table: "customer"
#primaryKey: "id"
#keyType: "int"
+incrementing: true
#with: []
#withCount: []
+preventsLazyLoading: false
#perPage: 15
+exists: true
+wasRecentlyCreated: false
#escapeWhenCastingToString: false
#attributes: array:28 [▼
"id" => 975
"code" => "123"
"name" => "Jon Don"
"address" => "Test address"
"created_at" => "2020-11-05 21:55:46"
"updated_at" => "2020-11-05 21:55:46"
"deleted_at" => null
]
Model
// Customer.php
public function customer()
{
return $this->belongsTo(Customer::class, 'subjekat_id');
}
SQLSTATE[42S22]: Column not found: 1054 Unknown column 'customer.name'
in 'where clause'

Answer 1

Problem is sloved using whereReklation
->when(
$request->has('keywords'),
function ($q) use ($request) {
return $q->whereRelation('customer', 'name', 'LIKE', '%'.$request->query('keywords') . '%');
})