fix school year for all tables

app/Models/InventoryItemModel.php

@@ -3,9 +3,12 @@
 namespace App\Models;
 
 use CodeIgniter\Model;
+use App\Models\Concerns\SchoolYearAutoFillTrait;
 
 class InventoryItemModel extends Model
 {
+    use SchoolYearAutoFillTrait;
+
 protected $table      = 'inventory_items';
     protected $primaryKey = 'id';
 
@@ -38,6 +41,7 @@ protected $table      = 'inventory_items';
         'needs_repair_qty',
         'need_replace_qty',
         'cannot_find_qty',
+        'school_year',
     ];
 
 
@@ -46,5 +50,6 @@ protected $table      = 'inventory_items';
         'name'        => 'required|min_length[2]',
         'quantity'    => 'permit_empty|integer',
         'unit_price'  => 'permit_empty|decimal',
+        'school_year' => 'required|string|max_length[16]',
     ];
 }