check if color is defined in create sport controller

server/src/controllers/sport.controllers.ts

@@ -26,15 +26,17 @@ const createSportController = async (req: Request, res: Response) => {
     }
 
     //check if color already assigned to another sport (for the statistics)
-    const findIfColorAlreadyAssigned = await Sport.findOne({
-      where: {
-        color: newSportInput.color,
-      },
-    });
-    if (findIfColorAlreadyAssigned) {
-      return res
-        .status(404)
-        .json({ success: false, error: "givenSportColorAlreadyExists" });
+    if (!(newSportInput.color === undefined)) {
+      const findIfColorAlreadyAssigned = await Sport.findOne({
+        where: {
+          color: newSportInput.color,
+        },
+      });
+      if (findIfColorAlreadyAssigned) {
+        return res
+          .status(404)
+          .json({ success: false, error: "givenSportColorAlreadyExists" });
+      }
     }
 
     const newSport = await Sport.create(newSportInput);
@@ -249,12 +251,10 @@ const showSportBySportId = async (req: Request, res: Response) => {
     const givenId = req.params.id;
     const sport = await Sport.findByPk(givenId);
     if (sport) {
-      return res
-        .status(200)
-        .json({
-          success: true,
-          result: { id: givenId, name: sport.name, color: sport.color },
-        });
+      return res.status(200).json({
+        success: true,
+        result: { id: givenId, name: sport.name, color: sport.color },
+      });
     }
     return res.status(404).json({ success: false, error: "sportIdNotFound" });
   } catch (error) {