## Update a custom page

`client.CustomPages.Update(ctx, identifier, params) (*CustomPageUpdateResponse, error)`

**put** `/{accounts_or_zones}/{account_or_zone_id}/custom_pages/{identifier}`

Updates the configuration of an existing custom page.

### Parameters

- `identifier CustomPageUpdateParamsIdentifier`

  Error Page Types

  - `const CustomPageUpdateParamsIdentifier1000Errors CustomPageUpdateParamsIdentifier = "1000_errors"`

  - `const CustomPageUpdateParamsIdentifier500Errors CustomPageUpdateParamsIdentifier = "500_errors"`

  - `const CustomPageUpdateParamsIdentifierBasicChallenge CustomPageUpdateParamsIdentifier = "basic_challenge"`

  - `const CustomPageUpdateParamsIdentifierCountryChallenge CustomPageUpdateParamsIdentifier = "country_challenge"`

  - `const CustomPageUpdateParamsIdentifierIPBlock CustomPageUpdateParamsIdentifier = "ip_block"`

  - `const CustomPageUpdateParamsIdentifierManagedChallenge CustomPageUpdateParamsIdentifier = "managed_challenge"`

  - `const CustomPageUpdateParamsIdentifierRatelimitBlock CustomPageUpdateParamsIdentifier = "ratelimit_block"`

  - `const CustomPageUpdateParamsIdentifierUnderAttack CustomPageUpdateParamsIdentifier = "under_attack"`

  - `const CustomPageUpdateParamsIdentifierWAFBlock CustomPageUpdateParamsIdentifier = "waf_block"`

  - `const CustomPageUpdateParamsIdentifierWAFChallenge CustomPageUpdateParamsIdentifier = "waf_challenge"`

- `params CustomPageUpdateParams`

  - `State param.Field[CustomPageUpdateParamsState]`

    Body param: The custom page state.

    - `const CustomPageUpdateParamsStateDefault CustomPageUpdateParamsState = "default"`

    - `const CustomPageUpdateParamsStateCustomized CustomPageUpdateParamsState = "customized"`

  - `URL param.Field[string]`

    Body param: The URL associated with the custom page.

  - `AccountID param.Field[string]`

    Path param: The Account ID to use for this endpoint. Mutually exclusive with the Zone ID.

  - `ZoneID param.Field[string]`

    Path param: The Zone ID to use for this endpoint. Mutually exclusive with the Account ID.

### Returns

- `type CustomPageUpdateResponse struct{…}`

  - `ID string`

  - `CreatedOn Time`

  - `Description string`

  - `ModifiedOn Time`

  - `PreviewTarget string`

  - `RequiredTokens []string`

  - `State CustomPageUpdateResponseState`

    The custom page state.

    - `const CustomPageUpdateResponseStateDefault CustomPageUpdateResponseState = "default"`

    - `const CustomPageUpdateResponseStateCustomized CustomPageUpdateResponseState = "customized"`

  - `URL string`

    The URL associated with the custom page.

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/cloudflare/cloudflare-go"
  "github.com/cloudflare/cloudflare-go/custom_pages"
  "github.com/cloudflare/cloudflare-go/option"
)

func main() {
  client := cloudflare.NewClient(
    option.WithAPIKey("144c9defac04969c7bfad8efaa8ea194"),
    option.WithAPIEmail("user@example.com"),
  )
  customPage, err := client.CustomPages.Update(
    context.TODO(),
    custom_pages.CustomPageUpdateParamsIdentifierRatelimitBlock,
    custom_pages.CustomPageUpdateParams{
      State: cloudflare.F(custom_pages.CustomPageUpdateParamsStateDefault),
      URL: cloudflare.F("http://www.example.com"),
    },
  )
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", customPage.ID)
}
```

#### Response

```json
{
  "errors": [
    {
      "code": 1000,
      "message": "message",
      "documentation_url": "documentation_url",
      "source": {
        "pointer": "pointer"
      }
    }
  ],
  "messages": [
    {
      "code": 1000,
      "message": "message",
      "documentation_url": "documentation_url",
      "source": {
        "pointer": "pointer"
      }
    }
  ],
  "success": true,
  "result": {
    "id": "basic_challenge",
    "created_on": "2014-01-01T05:20:00.12345Z",
    "description": "Basic Challenge",
    "modified_on": "2014-01-01T05:20:00.12345Z",
    "preview_target": "block:basic-sec-captcha",
    "required_tokens": [
      "::CAPTCHA_BOX::"
    ],
    "state": "default",
    "url": "http://www.example.com"
  }
}
```