## Update a Page Shield policy

`client.PageShield.Policies.Update(ctx, policyID, params) (*PolicyUpdateResponse, error)`

**put** `/zones/{zone_id}/page_shield/policies/{policy_id}`

Update a Page Shield policy by ID.

### Parameters

- `policyID string`

  Identifier

- `params PolicyUpdateParams`

  - `ZoneID param.Field[string]`

    Path param: Identifier

  - `Action param.Field[PolicyUpdateParamsAction]`

    Body param: The action to take if the expression matches

    - `const PolicyUpdateParamsActionAllow PolicyUpdateParamsAction = "allow"`

    - `const PolicyUpdateParamsActionLog PolicyUpdateParamsAction = "log"`

    - `const PolicyUpdateParamsActionAddReportingDirectives PolicyUpdateParamsAction = "add_reporting_directives"`

  - `Description param.Field[string]`

    Body param: A description for the policy

  - `Enabled param.Field[bool]`

    Body param: Whether the policy is enabled

  - `Expression param.Field[string]`

    Body param: The expression which must match for the policy to be applied, using the Cloudflare Firewall rule expression syntax

  - `Value param.Field[string]`

    Body param: The policy which will be applied

### Returns

- `type PolicyUpdateResponse struct{…}`

  - `ID string`

    Identifier

  - `Action PolicyUpdateResponseAction`

    The action to take if the expression matches

    - `const PolicyUpdateResponseActionAllow PolicyUpdateResponseAction = "allow"`

    - `const PolicyUpdateResponseActionLog PolicyUpdateResponseAction = "log"`

    - `const PolicyUpdateResponseActionAddReportingDirectives PolicyUpdateResponseAction = "add_reporting_directives"`

  - `Description string`

    A description for the policy

  - `Enabled bool`

    Whether the policy is enabled

  - `Expression string`

    The expression which must match for the policy to be applied, using the Cloudflare Firewall rule expression syntax

  - `Value string`

    The policy which will be applied

### Example

```go
package main

import (
  "context"
  "fmt"

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

func main() {
  client := cloudflare.NewClient(
    option.WithAPIKey("144c9defac04969c7bfad8efaa8ea194"),
    option.WithAPIEmail("user@example.com"),
  )
  policy, err := client.PageShield.Policies.Update(
    context.TODO(),
    "023e105f4ecef8ad9ca31a8372d0c353",
    page_shield.PolicyUpdateParams{
      ZoneID: cloudflare.F("023e105f4ecef8ad9ca31a8372d0c353"),
    },
  )
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", policy.ID)
}
```

#### Response

```json
{
  "result": {
    "id": "023e105f4ecef8ad9ca31a8372d0c353",
    "action": "allow",
    "description": "Checkout page CSP policy",
    "enabled": true,
    "expression": "ends_with(http.request.uri.path, \"/checkout\")",
    "value": "script-src 'none';"
  },
  "success": true,
  "errors": [
    {
      "code": 1000,
      "message": "message",
      "documentation_url": "documentation_url",
      "source": {
        "pointer": "pointer"
      }
    }
  ],
  "messages": [
    {
      "code": 1000,
      "message": "message",
      "documentation_url": "documentation_url",
      "source": {
        "pointer": "pointer"
      }
    }
  ]
}
```