backend: align API/models with current PostgreSQL schema

app/Models/ReservationTableAssignment.php

@@ -4,15 +4,19 @@ namespace App\Models;
 
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Support\Facades\Schema;
 
 class ReservationTableAssignment extends Model
 {
     use HasFactory;
 
     public $timestamps = false;
+    protected static ?string $resolvedTable = null;
+    protected static ?string $resolvedTableForeignKey = null;
 
     protected $fillable = [
         'reservation_id',
+        'table_id',
         'venue_table_id',
         'assigned_at',
     ];
@@ -21,6 +25,49 @@ class ReservationTableAssignment extends Model
         'assigned_at' => 'datetime',
     ];
 
+    public function __construct(array $attributes = [])
+    {
+        parent::__construct($attributes);
+        $this->table = self::tableName();
+    }
+
+    public static function tableName(): string
+    {
+        if (self::$resolvedTable !== null) {
+            return self::$resolvedTable;
+        }
+
+        self::$resolvedTable = Schema::hasTable('reservation_table_assignments')
+            ? 'reservation_table_assignments'
+            : 'reservation_tables';
+
+        return self::$resolvedTable;
+    }
+
+    public static function tableForeignKey(): string
+    {
+        if (self::$resolvedTableForeignKey !== null) {
+            return self::$resolvedTableForeignKey;
+        }
+
+        self::$resolvedTableForeignKey = Schema::hasColumn(self::tableName(), 'venue_table_id')
+            ? 'venue_table_id'
+            : 'table_id';
+
+        return self::$resolvedTableForeignKey;
+    }
+
+    public function setVenueTableIdAttribute($value): void
+    {
+        $this->attributes[self::tableForeignKey()] = $value;
+    }
+
+    public function getVenueTableIdAttribute()
+    {
+        $column = self::tableForeignKey();
+        return $this->attributes[$column] ?? null;
+    }
+
     public function reservation()
     {
         return $this->belongsTo(Reservation::class);
@@ -28,6 +75,6 @@ class ReservationTableAssignment extends Model
 
     public function table()
     {
-        return $this->belongsTo(VenueTable::class, 'venue_table_id');
+        return $this->belongsTo(VenueTable::class, self::tableForeignKey());
     }
 }