How to create a custom field on a standard Salesforce object?

Hi Pramod,

Although your question is not clear, I guess you want to create the custom field on a standard object using apex from the user interface i.e. Visualforce.

To do so you need to consume metadata API in your Salesforce Org.For more details about metadata, API follows the link  Understanding Metadata API. Once your metadata apex class is created you need to call below method from you visualforce page while passing the certain parameters that you want to take input from the user.Ex- Object Name, Field Name, Field Type, Field Size, etc.

public static void createField(){
MetadataService.MetadataPort service = createService();
MetadataService.CustomField customField = new MetadataService.CustomField();
customField.fullName = 'Test_Object__c.Test_Custom_Field__c';
customField.label = 'Test Custom Field';
customField.type_x = 'Text';
customField.length = 22;
List<MetadataService.SaveResult> results =
service.createMetadata(
new MetadataService.Metadata[] { customField });
handleSaveResults(results[0]);
}

In the above method, I have passed the static values that you have to replace from the User inputs.In the whole process, you will require creating a remote site setting because to create a metadata above code will make a callout in the same org where you want to create the custom field.

Let me know if this helps you.

Thanks.

• This reply was modified 8 years, 9 months ago by  Ajay Prakash.