Numeric Input With Shadcn + Zod + RHF

gistfile1.txt

"use client";

import { useForm } from "react-hook-form";
import { zodResolver } from "@hookform/resolvers/zod";
import { z } from "zod";
import { Button } from "@/components/ui/button";
import { Input } from "@/components/ui/input";
import { Label } from "@/components/ui/label";
import {
  Card,
  CardContent,
  CardDescription,
  CardHeader,
  CardTitle,
} from "@/components/ui/card";

const formSchema = z.object({
  quantity: z
    .number({
      message: "Quantity must be a number",
    })
    .min(1, "Quantity must be at least 1")
    .max(1000, "Quantity cannot exceed 1000"),
});

type FormData = z.infer<typeof formSchema>;

export default function EditPage() {
  const {
    register,
    handleSubmit,
    formState: { errors, isSubmitting },
  } = useForm<FormData>({
    mode: "onChange",
    resolver: zodResolver(formSchema),
    defaultValues: {
      quantity: 1,
    },
  });

  const onSubmit = async (data: FormData) => {
    console.log("Form submitted with data:", data);
    // Handle form submission here
  };

  return (
    <div className="container mx-auto py-8">
      <Card className="max-w-md mx-auto">
        <CardHeader>
          <CardTitle>Edit Project</CardTitle>
          <CardDescription>
            Update the project quantity. Enter a valid number.
          </CardDescription>
        </CardHeader>
        <CardContent>
          <form onSubmit={handleSubmit(onSubmit)} className="space-y-4">
            <div className="space-y-2">
              <Label htmlFor="quantity">Quantity</Label>
              <Input
                id="quantity"
                type="number"
                placeholder="Enter quantity"
                {...register("quantity", { valueAsNumber: true })}
                className={errors.quantity ? "border-red-500" : ""}
              />
              {errors.quantity && (
                <p className="text-sm text-red-500">
                  {errors.quantity.message}
                </p>
              )}
            </div>

            <Button type="submit" className="w-full" disabled={isSubmitting}>
              {isSubmitting ? "Saving..." : "Save Changes"}
            </Button>
          </form>
        </CardContent>
      </Card>
    </div>
  );
}