Setup barcode image generator

app/Nova/Filters/ProductType.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace App\Nova\Filters;
+
+use Laravel\Nova\Filters\Filter;
+use Laravel\Nova\Http\Requests\NovaRequest;
+
+class ProductType extends Filter
+{
+    /**
+     * The filter's component.
+     *
+     * @var string
+     */
+    public $component = 'select-filter';
+
+    /**
+     * Apply the filter to the given query.
+     *
+     * @param  \Laravel\Nova\Http\Requests\NovaRequest  $request
+     * @param  \Illuminate\Database\Eloquent\Builder  $query
+     * @param  mixed  $value
+     * @return \Illuminate\Database\Eloquent\Builder
+     */
+    public function apply(NovaRequest $request, $query, $value)
+    {
+        return $query;
+    }
+
+    /**
+     * Get the filter's available options.
+     *
+     * @param  \Laravel\Nova\Http\Requests\NovaRequest  $request
+     * @return array
+     */
+    public function options(NovaRequest $request)
+    {
+        return [];
+    }
+}

app/Nova/Resources/Order/Loan/LoanPaidOffLetterOrder.php

@@ -256,10 +256,8 @@ class LoanPaidOffLetterOrder extends Resource
 
     /**
      * Get the filters available for the resource.
-     *
-     * @return array
      */
-    public function filters(NovaRequest $request)
+    public function filters(NovaRequest $request): array
     {
         return [
             RegionFilter::make()