Create Validation Rules Through Code

 

#Salesforce #ValidationRules #ApexCode #CreateValidationRulesThroughCode

What is the Validation Rule in Salesforce? 

• Validation rules verify that the data a user enters in a record meets the standards you specify before the user can save the record.

• A validation rule can contain a formula or expression that evaluates the data in one or more fields and returns a value of “True” or “False”

• Validation rules also include an error message to display to the user when the rule returns a value of “True” due to an invalid value

Can we create a Validation Rule through code?

=> The answer is yes. We can create a validation rule through code. But, for this, you must have a MetaDataService Class in your org.

Here is a link, MetaDataSerivce Class.

The code is given below to create the Validation Rule:-

MetadataService.MetadataPort service = new MetadataService.MetadataPort();

        service.SessionHeader = new MetadataService.SessionHeader_element();

        service.SessionHeader.sessionId = UserInfo.getSessionId();

        List<MetadataService.Metadata> fields = new List<MetadataService.Metadata>();

        MetadataService.ValidationRule ValidationRule= new MetadataService.ValidationRule();

        ValidationRule.fullName='Account.Test'; // ObjectName.ValidationName

        ValidationRule.active=true;

        ValidationRule.errorConditionFormula= 'false';

        ValidationRule.errorMessage='Hello';

        fields.add(ValidationRule);

        MetadataService.SaveResult[] results = service.createMetadata(fields); 

Note:- In Validation.fullname, you'll provide Object API Name + . + Validation Rule Name.