After change datatype from citext to text

app/Models/Item.php

@@ -4,14 +4,33 @@ namespace App\Models;
 
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\SoftDeletes;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
 
 class Item extends Model
 {
     use SoftDeletes;
 
     protected $fillable = [
+        "plant_id",
+        "block_id",
+        "line_id",
         'code',
         'description',
         'hourly_quantity',
     ];
+
+    public function plant(): BelongsTo
+    {
+        return $this->belongsTo(Plant::class);
+    }
+
+    public function block(): BelongsTo
+    {
+        return $this->belongsTo(Block::class);
+    }
+
+    public function line(): BelongsTo
+    {
+        return $this->belongsTo(Line::class);
+    }
 }