Added hasMany relation on model files and Updated report filter functionality on resource file

app/Models/WorkGroupMaster.php

@@ -8,7 +8,7 @@ use Illuminate\Database\Eloquent\SoftDeletes;
 
 class WorkGroupMaster extends Model
 {
-     use SoftDeletes;
+    use SoftDeletes;
 
     protected $fillable = [
         'plant_id',
@@ -25,6 +25,11 @@ class WorkGroupMaster extends Model
         return $this->belongsTo(Plant::class);
     }
 
+    public function productCharacteristicsMasters()
+    {
+        return $this->hasMany(ProductCharacteristicsMaster::class);
+    }
+
     // public function rejectReasons()
     // {
     //     return $this->hasMany(RejectReason::class, 'work_group_master_id', 'id');