Customization of Field Attributes in DAC Extensions

If you have a customization that replaces the original attributes of a field with custom attributes, after you upgrade MYOB Advanced to a new version, new functionality may became unavailable, as the following diagram shows.

To address this issue, the customization framework provides advanced possibilities for you to control the field customization by using additional attributes in the DAC extension.

When you customize MYOB Advanced, you can specify how the system should apply the original and custom attributes to the field. Thus, you can make the customizations more flexible and use the collections of original attributes that could be updated between MYOB Advanced versions.

In the following example, the display name of the MyField field of the MyDac DAC is My Field, and in the MyDacExt DAC extension the display name of this field is changed to My Custom Field.

public class MyDac : IBqlTable
{
   public abstract class myField: PX.Data.BQL.BqlInt.Field<myField> { }
   [PXDBInt]
   [PXUIField(DisplayName = "My Field")]
   public virtual int? MyField{ get; set; }
}

public class MyDacExt : PXCacheExtension<MyDac>
{
  [PXCustomizeBaseAttribute(typeof(PXUIField), 
        nameof(PXUIFieldAttribute.DisplayName), "My Custom Field)]
  [PXMergeAttributes(Method = MergeMethod.Append)]
  public virtual int? MyField{ get; set; }
}