# Populating Fields & Selecting Options via URL Parameters Spiffy allows you to use parameters to pass order data, populate fields and tie a value to any option on your checkout. ## Table of Contents - [Populating Basic Customer Info Fields (Name/Email)](#populating-basic-customer-info-fields-nameemail) - [Populating Custom Input Fields via URL Parameters](#populating-custom-input-fields-via-url-parameters) - [Selecting Radio & Dropdown Options via URL Parameters](#selecting-radio-amp-dropdown-options-via-url-parameters) ## Populating Basic Customer Info Fields (Name/Email) By default, on your checkout you would need to include any/all of the following parameters: - `name_first=` - `name_last=` - `email=` If you would like to change these default parameters for the basic contact information fields, you can do this from within the Spiffy Checkout Editor. 1. In the **Checkout Editor,** hover over the Contact Info block and click **Edit Block** 2. In the sidebar, click to expand First Name, Last Name, and/or Email 3. Modify the Field URL Parameter to match your CRM’s field parameter 4. Once you have modified the Field URL Parameter for the necessary fields, be sure to **Save** and **Publish**. ## Populating Custom Input Fields via URL Parameters 1. In the **_Checkout Editor_**, hover over the bottom of a section and click [**Add Block**](https://university.spiffy.co/elements/blocks.md) 2. Select **_Inputs_** and then choose an Input type (ex: Text Input) 3. In the Input sidebar, use the Field dropdown to select or create a field to associate the Input Field with 4. Once selected, you will see the Parameter Key we are looking for in your URL displayed below the Field selector _(See example in screenshot above, eg. tax_id)_ 5. Be sure to **Save** and **Publish** your Checkout Now when you include the Parameter in your Checkout URL, the input can be prepopulated when the checkout loads _(eg. personalbrand.spiffy.co/checkout/courses?tax_id=12-3456789)_ ## Selecting Radio & Dropdown Options via URL Parameters URL Parameters will override the “Default” option set in the Visual Editor option settings. To enable this feature, you will need to associate your Radio or Dropdown option block with a custom field. First, [create a custom field](https://university.spiffy.co/account-settings/custom-fields.md) in Spiffy for this option. Add your [options](https://university.spiffy.co/elements/options.md) to your Checkout and configure as usual, adding any necessary text or price modifiers 1. In the Checkout Editor, hover over your Options Block and click **Edit Block** 2. In the Option sidebar settings, click the **Save Selection to a Field** button 3. Use the Field dropdown, select or create a field to **associate the Option Block** with 4. Once selected, you will see the Parameter Key to use in your URL displayed below the Field selector 5. Next, you will need to click into each **Option** in the sidebar settings to take note of or modify the Value field. 6. The Value is what is used along with the Parameter Key in the URL to select specific options eg: ?event_option=option-2 In this example, **event_option** is the Field **_Parameter Key_**, and **option-2** is the **_Option_** **_Value_** 7. Once configured, be sure to **Save** and **Publish** your checkout Now, you will have the ability to include a URL Parameter in your checkout URL to control the Option that is selected when the Checkout loads.