Added EMVCActiveRecordValidationError for "storage related" exception. Is not intended to be used for general validation.

sources/MVCFramework.ActiveRecord.pas

@@ -61,6 +61,15 @@ type
     procedure AfterConstruction; override;
   end;
 
+  EMVCActiveRecordValidationError = class(EMVCActiveRecord)
+  private
+    fPropertyName: String;
+  public
+    procedure AfterConstruction; override;
+    constructor Create(const PropertyName: String; const ValidationError: string);
+    property PropertyName: String read fPropertyName;
+  end;
+
   EMVCActiveRecordVersionedItemNotFound = class(EMVCActiveRecordNotFound)
   end;
 
@@ -4832,6 +4841,20 @@ end;
 
 {$ENDIF}
 
+{ EMVCActiveRecordValidation }
+
+procedure EMVCActiveRecordValidationError.AfterConstruction;
+begin
+  inherited;
+  FHTTPStatusCode := HTTP_STATUS.BadRequest;
+end;
+
+constructor EMVCActiveRecordValidationError.Create(const PropertyName, ValidationError: string);
+begin
+  inherited Create(ValidationError);
+  fPropertyName := PropertyName;
+end;
+
 initialization
 
 gTableMapLock := TObject.Create;