add foreign keys and extend models

device-app/app/Models/Device.php

@@ -2,8 +2,11 @@
 
 namespace App\Models;
 
-use Illuminate\Database\Eloquent\Factories\HasFactory;
+use App\Models\OwnerTransaction;
+use App\Models\LocationTransaction;
+use App\Models\PurchasingInformation;
 use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
 
 class Device extends Model
 {
@@ -24,4 +27,16 @@ class Device extends Model
 
     //Timestamps are disabled.
     public $timestamps = false;
+
+    public function owners() {
+        return $this->hasMany(OwnerTransaction::class, 'device_id');
+    }
+
+    public function locations() {
+        return $this->hasMany(LocationTransaction::class, 'device_id');
+    }
+
+    public function purchasing() {
+        return $this->belongsTo(PurchasingInformation::class, 'device_id');
+    }
 }

device-app/app/Models/LocationTransaction.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Models;
+
+use App\Models\Device;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+
+class LocationTransaction extends Model
+{
+    use HasFactory;
+
+    /**
+     * The primary key associated with the devices table.
+     * @var string
+     */
+    protected $primaryKey = 'location_transaction_id';
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array<int, string>
+     */
+    protected $fillable = ['location_transaction_id', 'room_code', 'timestamp_located_since', 'device_id'];
+
+    public function device() {
+        return $this->belongsTo(Device::class, 'device_id');
+    }
+}

device-app/app/Models/OwnerTransaction.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Models;
+
+use App\Models\Device;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+
+class OwnerTransaction extends Model
+{
+    use HasFactory;
+
+    /**
+     * The primary key associated with the devices table.
+     * @var string
+     */
+    protected $primaryKey = 'owner_transaction_id';
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array<int, string>
+     */
+    protected $fillable = ['owner_transaction_id', 'rz_username', 'timestamp_owner_since', 'device_id'];
+
+    public function device() {
+        return $this->belongsTo(Device::class, 'device_id');
+    }
+
+}

device-app/app/Models/PurchasingInformation.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class PurchasingInformation extends Model
+{
+    use HasFactory;
+
+    /**
+     * The primary key associated with the devices table.
+     * @var string
+     */
+    protected $primaryKey = 'purchasing_information_id';
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array<int, string>
+     */
+    protected $fillable = ['purchasing_information_id', 'price', 'timestamp_warranty_end', 'timestamp_purchase', 'cost_centre', 'seller', 'device_id'];
+
+    public function device() {
+        return $this->belongsTo(Device::class, 'device_id');
+    }
+}