# Google Pay Control Object

#### window\.ckGooglePay object - controls initialization of Google Pay button.

| **Method**      | **Call Required** | **Description**                                                                         |
| --------------- | ----------------- | --------------------------------------------------------------------------------------- |
| enableGooglePay | Yes               | <p>Initializes and enables Google Pay Button.<br>Takes EnableGooglePayParams object</p> |
| updateAmount    | Conditional       | Updates amount on Google Sheet.                                                         |

You can provide either All, One or None of the parameters for enableGooglePay call.

* `amountField` specified - in this case Google Pay total amount will be automatically updated whenever amount has changed
* `amountField` *is not* specified - in this case it’s up to you to provide the correct amount for Google Pay. One of the ways to do it is to call `window.ckGooglePay.updateAmount` manually.
* `iframeField` specified - this value will be used to communicate with Google Pay button.\
  This option is especially helpful for Angular clients using shadow DOM.
* `iframeField` *is not* specified - it’s value will be calculated based on `data-ifields-id` attribute. In this case it must be set to “igp“: `data-ifields-id="igp"`.

#### EnableGooglePayParams Object

| **Name**    | **Type**       | **Required** | **Description**                                                                                                                  |
| ----------- | -------------- | ------------ | -------------------------------------------------------------------------------------------------------------------------------- |
| amountField | String\|Object | No           | <p>Field containing amount.<br>Could be either name of the field (String) or<br>field itself (Object)</p>                        |
| iframeField | String\|Object | No           | <p>Field containing iframe with Google Pay button.<br>Could be either name of the field (String) or<br>field itself (Object)</p> |

**Enable Google Pay example**

```
ckGooglePay.enableGooglePay({amountField: 'amount'});
```


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