Middleware validator using zod schema

api/package-lock.json

@@ -12,6 +12,7 @@
         "drizzle-orm": "^0.44.2",
         "drizzle-zod": "^0.8.2",
         "express": "^5.1.0",
+        "lodash": "^4.17.21",
         "mysql2": "^3.14.1",
         "zod": "^3.25.74"
       },
@@ -1697,6 +1698,12 @@
       "integrity": "sha512-Ks/IoX00TtClbGQr4TWXemAnktAQvYB7HzcCxDGqEZU6oCmb2INHuOoKxbtR+HFkmYWBKv/dOZtGRiAjDhj92g==",
       "license": "MIT"
     },
+    "node_modules/lodash": {
+      "version": "4.17.21",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==",
+      "license": "MIT"
+    },
     "node_modules/long": {
       "version": "5.3.2",
       "resolved": "https://registry.npmjs.org/long/-/long-5.3.2.tgz",

api/package.json

@@ -18,6 +18,7 @@
     "drizzle-orm": "^0.44.2",
     "drizzle-zod": "^0.8.2",
     "express": "^5.1.0",
+    "lodash": "^4.17.21",
     "mysql2": "^3.14.1",
     "zod": "^3.25.74"
   },

api/src/middlewares/validationMiddleware.ts

@@ -1,19 +1,22 @@
 import { Request, Response, NextFunction } from 'express';
-import { z, ZodError } from 'zod';
+import { z, ZodError, ZodTypeAny } from 'zod';
+import { ZodObject } from 'zod/v4';
 
-export function validateData(schema: z.ZodObject<any, any>) {
+export function validateData(schema: ZodObject) {
   return (req: Request, res: Response, next: NextFunction) => {
     try {
       schema.parse(req.body);
       next();
     } catch (error) {
+      // console.log(error);
       if (error instanceof ZodError) {
         const errorMessages = error.errors.map((issue: any) => ({
           message: `${issue.path.join('.')} is ${issue.message}`,
         }));
         res.status(400).json({ error: 'Invalid data', details: errorMessages });
       } else {
-        res.status(500).json({ error: 'Internal Server Error' });
+        const er = error as ZodError
+        res.status(400).json({ error: er.flatten()});
       }
     }
   };

api/src/routes/products/index.ts

@@ -6,17 +6,18 @@ import { listProducts,
     deleteProduct 
 } from "./productsController";
 import { validateData } from "../../middlewares/validationMiddleware";
-import { z } from 'zod';
+import { z, ZodObject, ZodTypeAny } from 'zod/v4';
 import { createInsertSchema , createSelectSchema, createUpdateSchema } from 'drizzle-zod';
 import { productsTable } from "../../db/productsSchema";
 
-const createProductSchema = z.object({
-    name: z.string(),
-    price: z.number({ message: "not a number you idiot."}),
-});
+// const createProductSchema = z.object({
+//     name: z.string(),
+//     price: z.number({ message: "not a number you idiot."}),
+// });
 
-// const createProductSchema = createInsertSchema(productsTable);
-// type ProductType = z.infer<typeof createProductSchema>;
+
+const createProductSchema = createInsertSchema(productsTable).omit({id: true});
+type ProductType = z.infer<typeof createProductSchema>;
 
 const router = Router();