fix cheque validation

frontend/src/components/Productors/Modal/index.tsx

@@ -109,7 +109,7 @@ export function ProductorModal({
                                 existing ?? {
                                     name,
                                     details: "",
-                                    max: null,
+                                    max: "",
                                 }
                             );
                         }),

frontend/src/pages/Productors/index.tsx

@@ -58,6 +58,11 @@ export default function Productors() {
         async (productor: ProductorInputs) => {
             await createProductorMutation.mutateAsync({
                 ...productor,
+                payment_methods: productor.payment_methods.map((payment) =>( {
+                    name: payment.name,
+                    details: payment.details,
+                    max: payment.max === "" ? null : payment.max
+                }))
             });
             closeModal();
         },
@@ -69,7 +74,14 @@ export default function Productors() {
             if (!id) return;
             await editProductorMutation.mutateAsync({
                 id: id,
-                productor: productor,
+                productor: {
+                    ...productor,
+                    payment_methods: productor.payment_methods.map((payment) =>( {
+                    name: payment.name,
+                    details: payment.details,
+                    max: payment.max === "" ? null : payment.max
+                }))
+                },
             });
             closeModal();
         },

frontend/src/services/resources/productors.ts

@@ -9,7 +9,7 @@ export const PaymentMethods = [
 export type PaymentMethod = {
     name: string;
     details: string;
-    max: number | null;
+    max: number | string | null;
 };
 
 export type Productor = {