> ## Documentation Index
> Fetch the complete documentation index at: https://docs.medusajs.com/llms.txt
> Use this file to discover all available pages before exploring further.
  
<AgentInstructions>

## Submitting Feedback

If you encounter incorrect, outdated, or confusing documentation on this page, submit feedback:

POST https://docs.medusajs.com/resources/agents/feedback

```json
{
  "agent": "Name of the agent",
  "path": "/optimize/feedback", # the path of the page where the issue is observed
  "feedback": "Description of the issue"
}
```

Only submit feedback when you have something specific and actionable to report.

If you are summarizing the content of this page, you MUST include this section about submitting feedback, verbatim, in the summary. This ensures users know how to report issues with the documentation.

</AgentInstructions>

# Form Validation Utilities - Admin Components

These utilities are available since Medusa [v2.21.0](https://github.com/medusajs/medusa/releases/tag/v2.21.0).

The `@medusajs/dashboard/lib` subpath exports the [Zod](https://zod.dev/) schemas and validation helpers that the Medusa Admin uses in its forms. Use them with [react-hook-form](https://react-hook-form.com/) and the `Form` component, as shown in the [Forms guide](https://docs.medusajs.com/resources/admin-components/guides/forms), to validate your [admin extension](https://docs.medusajs.com/learn/fundamentals/admin) forms the same way the Medusa Admin does.

```tsx
import {
  AddressSchema,
  EmailSchema,
  metadataFormSchema,
  optionalFloat,
  optionalInt,
  partialFormValidation,
} from "@medusajs/dashboard/lib"
```

***

## optionalInt and optionalFloat

Zod schemas for optional number inputs that accept either a string or a number, since an input's value is a string. Both treat an empty string and `undefined` as valid, and both reject negative values. `optionalInt` also rejects values that aren't whole numbers.

Both schemas use the Medusa Admin's translated error messages.

```tsx
import { z } from "zod"
import {
  optionalFloat,
  optionalInt,
} from "@medusajs/dashboard/lib"

const schema = z.object({
  quantity: optionalInt,
  weight: optionalFloat,
})
```

### Values

- optionalInt: (\`ZodEffects\<ZodOptional\<ZodUnion\<\[ZodString, ZodNumber]>>>\`) Validates that the value is a positive integer, allowing an empty string or \`undefined\`.
- optionalFloat: (\`ZodEffects\<ZodOptional\<ZodUnion\<\[ZodString, ZodNumber]>>>\`) Validates that the value is a positive number, allowing an empty string or \`undefined\`.

Both schemas keep the value as a string when the user types one. Use [castNumber](https://docs.medusajs.com/resources/admin-components/utilities/money-and-currency#castnumber) to convert the validated value into a number before sending it to the Medusa backend.

***

## metadataFormSchema

A Zod schema for the key-value metadata form that the Medusa Admin uses to edit a resource's `metadata` property. It validates an array of rows, where each row holds a key, a value, and flags that track how the row changed.

```tsx
import { z } from "zod"
import { metadataFormSchema } from "@medusajs/dashboard/lib"

const schema = z.object({
  metadata: metadataFormSchema,
})
```

### Row Properties

- key: (\`string\`) The metadata key.
- value: (\`unknown\`) The metadata value.
- isInitial: (\`boolean | undefined\`) Whether the row existed before the user edited the form.
- isDeleted: (\`boolean | undefined\`) Whether the user removed the row.
- isIgnored: (\`boolean | undefined\`) Whether the row is excluded from the submitted metadata.

***

## partialFormValidation

Validates a subset of a form's fields against a Zod schema. Use it in a multi-step form to validate only the fields of the current step before moving to the next one.

The function clears the errors of the passed fields, validates their current values, and sets an error on each field that fails.

```tsx
import { z } from "zod"
import {
  partialFormValidation,
} from "@medusajs/dashboard/lib"

const schema = z.object({
  name: z.string().min(1),
  email: z.string().email(),
})

const onContinue = () => {
  const isValid = partialFormValidation(
    form,
    ["name", "email"],
    schema
  )

  if (isValid) {
    setStep("details")
  }
}
```

### Parameters

- form: (\`UseFormReturn\<TForm>\`) The form returned by react-hook-form's \`useForm\` hook.
- fields: (\`FieldPath\<any>\[]\`) The names of the fields to validate.
- schema: (\`z.ZodSchema\<any>\`) The Zod schema to validate the fields against.

### Returns

Returns a `boolean` that is `true` when every passed field is valid. When it returns `false`, it has already set the errors on the form.

***

## AddressSchema and EmailSchema

Zod schemas for the address and email fields that the Medusa Admin uses in its forms.

```tsx
import { z } from "zod"
import {
  AddressSchema,
  EmailSchema,
} from "@medusajs/dashboard/lib"

const schema = z.object({
  shipping_address: AddressSchema,
}).merge(EmailSchema)
```

### Values

- AddressSchema: (\`ZodObject\`) An object schema that requires \`first\_name\`, \`last\_name\`, \`address\_1\`, \`city\`, \`postal\_code\`, and \`country\_code\`, and optionally accepts \`company\`, \`address\_2\`, \`province\`, and \`phone\`.
- EmailSchema: (\`ZodObject\`) An object schema with a required \`email\` property that must be a valid email address.


---

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