rework components

device-app/app/Models/Device.php

@@ -7,11 +7,19 @@ use App\Models\LocationTransaction;
 use App\Models\PurchasingInformation;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Relations\HasOne;
 
 class Device extends Model
 {
     use HasFactory;
 
+    /**
+     * The table associated with the model.
+     * @var string
+     */
+    protected $table = 'devices';
+
     /**
      * The primary key associated with the devices table.
      * @var string
@@ -25,18 +33,20 @@ class Device extends Model
      */
     protected $fillable = ['device_id', 'title', 'device_type', 'description', 'accessories', 'rz_username_buyer', 'serial_number', 'image_url'];
 
+    //The data type of the auto-incrementing ID.
+    protected $keyType = 'string';
     //Timestamps are disabled.
     public $timestamps = false;
 
-    public function owners() {
-        return $this->hasMany(OwnerTransaction::class, 'device_id');
+    public function owners(): HasMany {
+        return $this->hasMany(OwnerTransaction::class, 'device_id', 'device_id');
     }
 
-    public function locations() {
-        return $this->hasMany(LocationTransaction::class, 'device_id');
+    public function locations(): HasMany {
+        return $this->hasMany(LocationTransaction::class, 'device_id', 'device_id');
     }
 
-    public function purchasing() {
-        return $this->belongsTo(PurchasingInformation::class, 'device_id');
+    public function purchasing(): HasOne {
+        return $this->hasOne(PurchasingInformation::class, 'device_id', 'device_id');
     }
 }