Added option to include-exclude ads without price

app/helpers/db/searchRequest.js

@@ -57,7 +57,8 @@ const findSearchRequestsForRealEstate = async realEstate => {
 
   //Attributes are checked separately to make different query parts
 
-  //If price is null it will be excluded from query - it will show properties with null price values
+  //If real estate price is number then it searches for req that have priceMin and priceMax
+  //If real estate price is null it searches for req that accept ads without price
   //User always defines price and area (sliders) - not null in search req
   let priceQuery = {};
   if (price != null) {
@@ -75,6 +76,12 @@ const findSearchRequestsForRealEstate = async realEstate => {
         }
       ]
     };
+  } else {
+    priceQuery = {
+      includeWithoutPrice: {
+        [Op.eq]: true
+      }
+    };
   }
 
   let areaQuery = {};