add published announcement filter

app/Classes/General/Eloquent/Filters/IsPublished.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace App\Classes\General\Eloquent\Filters;
+
+use Carbon\Carbon;
+use Illuminate\Database\Eloquent\Builder;
+
+class IsPublished implements Filter
+{
+
+    /**
+     * @param Builder $builder
+     * @param $value
+     * @return Builder|mixed
+     */
+    public static function apply(Builder $builder, $value)
+    {
+        return $builder->whereDate('starting_on', '<=', Carbon::now())
+            ->whereDate('ending_on', '>=', Carbon::now());
+    }
+}