Platform Developer I Certification Maintenance (Winter '22)

Platform Developer I Certification Maintenance (Winter '22)

→ Get Ready for the Hands-on Challenge

In the hands-on challenge below, you’ll have an opportunity to work with the new Custom Metadata getInstance method to replace SOQL.

Launch the org you’ll use for the hands-on challenge, then follow below steps:

Create a Custom Metadata Type.

Step: 1

Find 'Custom Metadata Types' in 'Quick find' box and select the same option.
Click the 'New Custom Metadata Type' button.

Step: 2

As mentioned in trailhead challenge, enter 'Label' and 'Plural Label' values, leave all options as it is,

• Label: Country Code
• Plural Label: Country Codes

And click 'Save' button.

Step: 3

Click 'New' button in 'Custom Fields' section for creating new field in custom metadata.

Step: 4

Select 'Text' data type and click 'Next' button.

Step: 5

As mentioned in trailhead challenge, enter 'Field Label' and 'Length' values,

• Field Label: Country Code
• Length: 3

And click 'Next' button.

Step: 6

Leave all options as it is and click 'Save' button.

Step: 7

Now, click on 'Manage Country Codes' button for creating new record for custom metadata.

Step: 8

Click 'New' button.

Step: 9

As mentioned in trailhead challenge, enter 'Label' and 'Country Code' values,

• Label: Canada
• Country Code: CAN

And click 'Save' button.

Step: 10

After saving the record, it will look like below screenshot.

Step: 11

Now, as mentioned in trailhead challenge, we need to create one apex class.

To open the Developer Console from Salesforce Classic:

1. Click Your Name.
2. Click Developer Console.

To open the Developer Console from Lightning Experience:

1. Click the quick access menu ().
2. Click Developer Console.

Follow below steps in developer console
~ File > New > Apex Class

Step: 12

As mentioned in trailhead challenge, enter 'Apex Class' name and click 'OK' button.
Class Name: CountryCodeHelper

Step: 13

Copy below mentioned code and paste in developer console and 'save' this apex class.

CountryCodeHelper code:

public class CountryCodeHelper {
	public static string getCountryCode(String country) {
		Country_Code__mdt countryCode = Country_Code__mdt.getInstance(country);
		return countryCode.Country_Code__c;
	}
}

Note: To keep your certification, complete the Platform Developer 1 Certification Maintenance (Winter '22) Module by Dec 7, 2022.